David
Thu January 16, 2003 12:30am
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C-2A Greyhound
Function: Description: Twin-engine cargo aircraft, designed to land on aircraft carriers.
History: The C-2 Greyhound is a derivative of the E-2 Hawkeye and replaced the piston-engined C-1 Trader in the Carrier On-board Delivery role. The C-2 shares wings, power plants and empennage with the E-2 Hawkeye, but has a widened fuselage with a rear loading ramp. The first of two prototypes flew in 1964 and production began the following year. The original C-2A aircraft were overhauled to extend their operational life in 1973. In 1984, a contract was awarded for 39 new C-2A aircraft to replace earlier the airframes. Dubbed the Reprocured C-2A due to the similarity to the original, the new aircraft include substantial improvements in airframe and avionic systems. All the older C-2As were phased out in 1987, and the last of the new models was delivered in 1990. During the period November 1985 to February 1987, VR-24, operating with seven Reprocured C-2As, demonstrated exceptional operational readiness while delivering two million pounds of cargo, two million pounds of mail and 14,000 passengers in support of the European and Mediterranean theatres. The C-2A also provided support to the carrier battle groups during operations Desert Shield and Desert Storm, as well as during the recent operations in Kosovo.
Description: The C-2A Greyhound provides critical logistics support to aircraft carriers. Its primary mission is Carrier On-Board delivery. Powered by two PT-6 turboprop engines, the C-2A can deliver a payload of up to 10,000 pounds. The cabin can readily accommodate cargo, passengers or both. It is also equipped to accept litter patients in medical evacuation missions. Priority cargo such as jet engines can be transported from shore to ship in a matter of hours. A cage system or transport stand provides cargo restraint for loads during carrier launch or landing. The large aft cargo ramp and door and a powered winch allow straight-in rear cargo loading and downloading for fast turnaround. The C-2A's open-ramp flight capability allows airdrop of supplies and personnel from a carrier-launched aircraft. This, plus its folding wings and an on-board auxiliary power unit for engine starting and ground power self-sufficiency in remote areas provide an operational versatility found in no other cargo aircraft.
General Characteristics, C-2A Greyhound
Contractor:
Grumman Aerospace Corporation
Unit Cost:
$38.96 million
Length:
57 feet 7 inches (17.3 meters)
Height:
17 feet (5 meters)
Maximum Take-off Weight:
57,000 pounds (25,650 kilograms)
Crew:
Four
Power Plant:
Two Allison T-56-A-425 turboprop engines; 4,600 shaft horsepower each
Maximum Cruising Speed:
300 knots (345 mph, 553 kph)
Ceiling:
30,000 feet (9,100 meters)
Range:
1,300 nautical miles (1,495 statute miles)
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David
Thu January 16, 2003 12:43am
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U-2R/U-2S
Function: The U-2 provides continuous day or night, high-altitude, all-weather, stand-off surveillance of an area in direct support of U.S. and allied ground and air forces. It provides critical intelligence to decision makers through all phases of conflict, including peacetime indications and warnings, crises, low-intensity conflict and large-scale hostilities.
History: Current models are derived from the original version that made its first flight in August 1955. On Oct. 14, 1962, it was the U-2 that photographed the Soviet military installing offensive missiles in Cuba.
The U-2R, first flown in 1967, is significantly larger and more capable than the original aircraft. A tactical reconnaissance version, the TR-1A, first flew in August 1981 and was delivered to the Air Force the next month. Designed for stand-off tactical reconnaissance in Europe, the TR-1 was structurally identical to the U-2R. Operational TR-1A's were used by the 17th Reconnaissance Wing, Royal Air Force Station Alconbury, England, starting in February 1983. The last U-2 and TR-1 aircraft were delivered to the Air Force in October 1989. In 1992 all TR-1s and U-2s were redesignated U-2R. Current U-2R models are being reengined and will be designated as a U-2S/ST. The Air Force accepted the first U-2S in October, 1994.
When requested, the U-2 also has provided photographs to the Federal Emergency Management Agency in support of disaster relief.
U-2s are based at Beale Air Force Base, CA and support national and tactical requirements from four operational detachments located throughout the world. U-2R/U-2S crew members are trained at Beale using three U-2ST aircraft. The last R model trainer will be converted to an S model trainer in 1999.
Description: The U-2 is a single-seat, single-engine, high-altitude, reconnaissance aircraft. Long, wide, straight wings give the U-2 glider-like characteristics. It can carry a variety of sensors and cameras, is an extremely reliable reconnaissance aircraft, and enjoys a high mission completion rate.
Because of its high altitude mission, the pilot must wear a full pressure suit. The U-2 is capable of collecting multi-sensor photo, electro-optic, infrared and radar imagery, as well as performing other types of reconnaissance functions. However, the aircraft can be a difficult aircraft to fly due to its unusual landing characteristics.
The aircraft is being upgraded with a lighter engine (General Electric F-118-101) that burns less fuel, cuts weight and increases power. The entire fleet should be reengined by 1998. Other upgrades are to the sensors and adding the Global Positioning System that will superimpose geo-coordinates directly on collected images.
General Characteristics, U-2R/U-2S
Builder:
Lockheed Aircraft Corporation
Cost:
Classified
Power Plant:
One Pratt & Whitney J75-P-13B engine; one General Electric F-118-101 engine
Thrust:
17,000 pounds (7,650 kilograms)
Length:
63 feet (19.2 meters)
Height:
16 feet (4.8 meters)
Wingspan:
103 feet (30.9 meters)
Maximum Takeoff Weight:
40,000 pounds (18,000 kilograms)
Speed:
475+ miles per hour (Mach 0.58)
Ceiling:
Above 70,000 feet (21,212 meters)
Range:
Beyond 7,000 miles (6,090 nautical miles)
Crew:
One (two in trainer models)
Inventory:
Active force, 36 (four trainers)
Reserve, 0
ANG, 0
Date Deployed:
U-2, August 1955
U-2R, 1967
U-2S, October 1994
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David
Thu January 16, 2003 10:39am
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AH-64 Apache
Function: Fire support and security for forward and rear area forces, point target/anti-armor, anti-helicopter, armed escort, supporting arms control and coordination, point and limited area air defense from enemy fixed-wing aircraft, armed and visual reconnaissance.
History: Apache production began in 1982 and the first unit was deployed in 1986. As of November 1993, 807 Apaches were delivered to the Army. The last Army Apache delivery is scheduled for December 1995. Thirty-three attack battalions are deployed and ready for combat. The Army is procuring a total of 824 Apaches to support a new force structure of 25 battalions with 24 Apaches for each unit (16 Active; two Reserve; seven National Guard) under the Aviation Restructure Initiative. The Apache has been sold to Israel, Egypt, Saudi Arabia, the UAE, and Greece.
Description: The Boeing (McDonnell Douglas) (formerly Hughes) AH-64A Apache is the Army's primary attack helicopter. It is a quick-reacting, airborne weapon system that can fight close and deep to destroy, disrupt, or delay enemy forces. The Apache is designed to fight and survive during the day, night, and in adverse weather throughout the world. The principal mission of the Apache is the destruction of high-value targets with the HELLFIRE missile. It is also capable of employing a 30MM M230 chain gun and Hydra 70 (2.75 inch) rockets that are lethal against a wide variety of targets. The Apache has a full range of aircraft survivability equipment and has the ability to withstand hits from rounds up to 23MM in critical areas.
The AH-64 Apache is a twin-engine, four bladed, multi-mission attack helicopter designed as a highly stable aerial weapons-delivery platform. It is designed to fight and survive during the day, night, and in adverse weather throughout the world. With a tandem-seated crew consisting of the pilot, located in the rear cockpit position and the co-pilot gunner (CPG), located in the front position, the Apache is self-deployable, highly survivable and delivers a lethal array of battlefield armaments. The Apache features a Target Acquisition Designation Sight (TADS) and a Pilot Night Vision Sensor (PNVS) which enables the crew to navigate and conduct precision attacks in day, night and adverse weather conditions. The Apache can carry up to 16 Hellfire laser designated missiles. With a range of over 8000 meters, the Hellfire is used primarily for the destruction of tanks, armored vehicles and other hard material targets. The Apache can also deliver 76, 2.75" folding fin aerial rockets for use against enemy personnel, light armor vehicles and other soft-skinned targets. Rounding out the Apache?s deadly punch are 1,200 rounds of ammunition for its Area Weapons System (AWS), 30MM Automatic Gun.
Powered by two General Electric gas turbine engines rated at 1890 shaft horsepower each, the Apache?s maximum gross weight is 17,650 pounds which allows for a cruise airspeed of 145 miles per hour and a flight endurance of over three hours. The AH-64 can be configured with an external 230-gallon fuel tank to extend its range on attack missions, or it can be configured with up to four 230-gallon fuel tanks for ferrying/self-deployment missions. The combat radius of the AH-64 is approximately 150 kilometers. The combat radius with one external 230-gallon fuel tank installed is approximately 300 kilometers [radii are temperature, PA, fuel burn rate and airspeed dependent]. The AH-64 is air transportable in the C-5, C-141 and C-17.
An on-board video recorder has the capability of recording up to 72 minutes of either the pilot or CPG selected video. It is an invaluable tool for damage assessment and reconnaissance. The Apache's navigation equipment consists of a doppler navigation system, and most aircraft are equipped with a GPS receiver.
The Apache has state-of-the-art optics that provide the capability to select from three different target acquisition sensors. These sensors are
- Day TV. Views images during day and low light levels, black and white.
- TADS FLIR. Views thermal images, real world and magnified, during day, night and adverse weather.
- DVO. Views real world, full color, and magnified images during daylight and dusk conditions.
The Apache has four articulating weapons pylons, two on either side of the aircraft, on which weapons or external fuel tanks can be mounted. The aircraft has a LRF/D. This is used to designate for the Hellfire missile system as well as provide range to target information for the fire control computer's calculations of ballistic solutions.
Threat identification through the FLIR system is extremely difficult. Although the AH-64 crew can easily find the heat signature of a vehicle, it may not be able to determine friend or foe. Forward looking infrared detects the difference in the emission of heat in objects. On a hot day, the ground may reflect or emit more heat than the suspected target. In this case, the environment will be "hot" and the target will be "cool." As the air cools at night, the target may lose or emit heat at a lower rate than the surrounding environment. At some point the emission of heat from both the target and the surrounding environment may be equal. This is IR crossover and makes target acquisition/detection difficult to impossible. IR crossover occurs most often when the environment is wet. This is because the water in the air creates a buffer in the emissivity of objects. This limitation is present in all systems that use FLIR for target acquisition.
Low cloud ceilings may not allow the Hellfire seeker enough time to lock onto its target or may cause it to break lock after acquisition. At extended ranges, the pilot may have to consider the ceiling to allow time for the seeker to steer the weapon onto the target. Pilot night vision sensor cannot detect wires or other small obstacles.
Overwater operations severely degrade navigation systems not upgraded with embedded GPS. Although fully capable of operating in marginal weather, attack helicopter capabilities are seriously degraded in conditions below a 500-foot ceiling and visibility less than 3 km. Because of the Hellfire missile's trajectory, ceilings below 500 feet require the attack aircraft to get too close to the intended target to avoid missile loss. Below 3 km visibility, the attack aircraft is vulnerable to enemy ADA systems. Some obscurants can prevent the laser energy from reaching the target; they can also hide the target from the incoming munitions seeker. Dust, haze, rain, snow and other particulate matter may limit visibility and affect sensors. The Hellfire remote designating crew may offset a maximum of 60 degrees from the gun to target line and must not position their aircraft within a +30-degree safety fan from the firing aircraft.
The Apache fully exploits the vertical dimension of the battlefield. Aggressive terrain flight techniques allow the commander to rapidly place the ATKHB at the decisive place at the optimum time. Typically, the area of operations for Apache is the entire corps or divisional sector. Attack helicopters move across the battlefield at speeds in excess of 3 kilometers per minute. Typical planning airspeeds are 100 to 120 knots during daylight and 80 to 100 knots at night. Speeds during marginal weather are reduced commensurate with prevailing conditions. The Apache can attack targets up to 150 km across the FLOT. If greater depth is required, the addition of ERFS tanks can further extend the AH-64's range with a corresponding reduction in Hellfire missile carrying capacity (four fewer Hellfire missiles for each ERFS tank installed).
The Russian-developed Mi-24 HIND is the Apache's closest couterpart. The Russians have deployed significant numbers of HINDs in Europe and have exported the HIND to many third world countries. The Russians have also developed the KA-50 HOKUM as their next generation attack helicopter. The Italian A-129 Mangusta is the nearest NATO counterpart to the Apache. The Germans and French are co-developing the PAH-2 Tiger attack helicopter, which has many of the capabilities of the Apache.
The AH-64A: The AH-64 fleet consists of two aircraft models, the AH-64A and the newer Longbow Apache (LBA), AH-64D. AH-64A model full-scale production began in 1983 and now over 800 aircraft have been delivered to the U.S. Army and other NATO Allies. The U.S. Army plans to remanufacture its entire AH-64A Apache fleet to the AH-64D configuration over the next decade. The AH-64A fleet exceeded one million flight hours in 1997, and the median age of today's fleet is 9 years and 1,300 flight hours.
The AH-64A proved its capabilities in action during both Operation Restore Hope and Operation Desert Storm. Apache helicopters played a key role in the 1989 action in Panama, where much of its activity was at night, when the AH-64's advanced sensors and sighting systems were effective against Panamanian government forces.
Apache helicopters also played a major role in the liberation of Kuwait. On 20 November 1990, the 11th Aviation Brigade was alerted for deployment to Southwest Asia from Storck Barracks in Illesheim Germany. The first elements arrived in theater 24 November 1990. By 15 January 1991 the unit had moved 147 helicopters, 325 vehicles and 1,476 soldiers to the region. The Apache helicopters of the Brigade destroyed more than 245 enemy vehicles with no losses.
During Operation Desert Storm, AH-64s were credited with destroying more than 500 tanks plus hundreds of additional armored personnel carriers, trucks and other vehicles. They also were used to destroy vital early warning radar sites, an action that opened the U.N. coalition's battle plan. Apaches also demonstrated the ability to perform when called upon, logging thousands of combat hours at readiness rates in excess of 85 percent during the Gulf War.
While recovery was ongoing, additional elements of the 11th Aviation Brigade began the next chapter of involvement in the region. On 24 April 1991 the 6th Squadron, 6th Cavalry?s 18 AH-64 helicopters began a self-deployment to Southwest Asia. The Squadron provided aerial security to a 3,000 square kilometer region in Northern Iraq as part of the Combined Task Force of Operation Provide Comfort.
And the AH-64A Apache helped to keep the peace in Bosnia. April of 1996 saw the beginning of the 11th Regiment?s involvement in Bosnia-Herzegovina. Elements of 6-6 Cavalry served as a part of Task Force Eagle under 1st Armored Division for 7 months. In October of 1996, Task Force 11, consisting of the Regimental Headquarters, 2-6 Cavalry, 2-1 Aviation and 7-159 Aviation (AVIM) deployed to Bosnia-Herzegovina in support of Operation Joint Endeavor/Operation Joint Guard for eight months. In June of 1998 the Regimental Headquarters, 6-6 Cav and elements of 5-158 Aviation were again deployed to Bosnia-Herzegovina in support of Operations Joint Guard and Joint Forge for 5 months. The AH-64A?s advanced sensors and sighting systems proved effective in removing the cover of darkness from anti-government forces.
Army National Guard units in North and South Carolina, Florida, Texas, Arizona, Utah and Idaho also fly Apache helicopters. The Army has fielded combat-ready AH-64A units in the United States, West Germany and in Korea, where they play a major role in achieving the US Army's security missions.
By late 1996, McDonnell Douglas Helicopters delivered 937 AH-64A Apaches -- 821 to the U.S. Army and 116 to international customers, including Egypt, Greece, Israel, Saudi Arabia and the United Arab Emirates.
The Apache is clearly one of the most dynamic and important programs in aviation and the Army, but it is not without limitations. Due to the possibility of surging the engines, pilots have been instructed not to fire rockets from in-board stations. According to current doctrine, they are to fire no more than pairs with two outboard launchers every three seconds, or fire with only one outboard launcher installed without restrictions (ripples permitted). These are the only conditions permitted. Other firing conditions will be required to be approved via a System Safety Risk Assessment (SSRA).
The improvement of aircraft systems troubleshooting is a high priority issue for O&S Cost reduction. Because of funding cuts, the level of contractor support to the field has been reduced. This results in higher costs in no fault found removals, maintenance man hours, and aircraft down time. The Apache PM, US Army Aviation Logistics School, and Boeing are currently undertaking several initiatives. Upgrading and improving the soldier's ability to quickly and accurately fault isolate the Apache weapons system is and will continue to be an O&S priority until all issues are resolved.
Prime Vendor Support (PVS) for the entire fleet of AH-64s is a pilot program for the Army, and may become a pilot program for the Department of Defense. PVS will place virtually all of Apache's wholesale logistic responsibility under a single contract. The Apache flying hour program will provide upfront funding for spares, repairables, contractor technical experts, and reliability improvements. Starting at the flight line there will be contractor expert technicians with advanced troubleshooting capability assigned to each Apache Battalion. At the highest level, PVS represents a single contractor focal point for spares and repairs. The intent is to break the current budget and requirements cycle that has Apache at 67% supply availability with several thousand lines at zero balance.
Modernization Through Spares (MTS) is a spares/component improvement strategy applied throughout the acquisition life cycle and is based on technology insertion to enhance systems and extend useful life while reducing costs. The MTS initiative seeks to leverage current procurement funds and modernize individual system spares thereby incrementally improving these systems. MTS is accomplished via the "spares" acquisition process. MTS, a subset of acquisition reform, seeks to improve an end item's spare components. The emphasis is on form, fit and function, allowing a supplier greater design and manufacturing flexibility to exploit technology used in the commercial marketplace.
Apache MTS focuses on the insertion of the latest technology into the design and manufacture of select spares. This is to be accomplished without government research and development (R&D) funds, but rather, uses industry investment. Industry, in turn, recoups this investment through the sale of improved hardware via long term contracts.
Modernization efforts continue to improve the performance envelope of the AH-64A while reducing the cost of ownership. Major modernization efforts within the AH-64A fleet are funded and on schedule. GG Rotor modifications were finished in April 1998,, and future improvements such as a Second Generation FLIR, a High Frequency Non-Line of Sight NOE radio, and an internal fully crashworthy auxiliary fuel tank are all on the verge of becoming a reality for the Apache.
The Aviation Mission Planning System (AMPS) and the Data Transfer Cartridge (DTC) are tools for the Embedded Global Positioning Inertial Navigation Unit (EGI) equipped AH-64A aircraft that allow aircrews to plan missions and download the information to a DTC installed in the Data Transfer Receptacle (DTR). This saves the pilots a lot of "fat fingering" and eliminates the worry of everyone being on the same "sheet of music". Other features of the DTC include; saving waypoints and targets and troubleshooting. The EGI program is a Tri-service program with the Army, Air Force and Navy.
??General Characteristics, AH-64 Apache
Manufacturers:
Boeing McDonnell Douglas Helicopter Systems (Mesa, AZ)
General Electric (Lynn, MA)
Martin Marietta (Orlando, FL)
Power Plant:
Two T700-GE-701Cs
Length:
58.17 feet (17.73 meters)
Height:
15.24 feet (4.64 meters)
Wingspan:
17.15 feet (5.227 meters)
Weight:
11,800 pounds empty
15,075 pounds (6838 kilograms) loaded
Maximum Speed:
153 knots (284 kph)
Range:
1,900 kilometers
Crew:
Two: pilot and copilot/gunner
Armament:
M230 33mm gun
70mm (2.75 inch) Hydra-70 folding-fin aerial rockets
AGM-114 Hellfire anti-tank missiles
AGM-122 Sidearm anti-radar missile
AIM-9 Sidewinder air-to-air missiles
Introduction Date:
1986
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David
Thu January 16, 2003 10:39am
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RAH-66 Comanche
Function: Fire support and security for forward and rear area forces, point target/anti-armor, anti-helicopter, armed escort, supporting arms control and coordination, point and limited area air defense from enemy fixed-wing aircraft, armed and visual reconnaissance.
Description: The Boeing-Sikorsky RAH-66 Comanche is the Army's next generation armed reconnaissance helicopter. It also is the first helicopter developed specifically for this role. The Comanche will provide Army Aviation the opportunity to move into the 21st century with a weapon system of unsurpassed warfighting capabilities crucial to the Army's future strategic vision. The Comanche is intended to replace the current fleet of AH-1 and OH-58 helicopters in all air cavalry troops and light division attack helicopter battalions, and supplement the AH-64 Apache in heavy division/corps attack helicopter battalions.
The first Boeing-Sikorsky RAH-66 Comanche prototype was rolled-out at Sikorsky Aircraft, Stratford, Connecticut, May 25, 1995. The prototype's first flight was made on 04 January 1996. The second prototype is scheduled to fly in late March 1999. Six early operational capability aircraft are scheduled to be delivered 2002 to participate in an Army field exercise in 2002-2003, or possibly later in "Corps 04." The Comanche is powered by two Light Helicopter Turbine Engine Co. (LHTEC) T800-801 engines. These advanced engines and a streamlined airframe will be enable the Comanche to fly significantly faster than the larger AH-64 Apache.
The RAH-66 Comanche helicopter's primary role will be to seek out enemy forces and designate targets for the AH-64 Apache Attack helicopter at night, in adverse weather, and in battlefield obscurants, using advanced infrared sensors. The helmet has FLIR images and overlaid symbology that can be used as a headup display in nape-of-the-earth (NOE) flight.
The aircraft has been designed to emit a low-radar signature (stealth features). The Comanche will perform the attack mission itself for the Army's light divisions. The RAH-66 will be used as a scout and attack helicopter to include an air-to-ground and air-to-air combat capability. The Comanche is slated to replace the AH-1 Series Cobra light attack helicopter, the OH-6A Cayuse, and the OH-58A/OH-58C Kiowa light observation helicopters.
The Comanche mission equipment package consists of a turret-mounted cannon, night-vision pilotage system, helmet-mounted display, electro-optical target acquisition and designation system, aided target recognition, and integrated communication/navigation/identification avionics system. Targeting includes a second generation forward-looking infrared (FLIR) sensor, a low-light-level television, a laser range finder and designator, and the Apache Longbow millimeter wave radar system. Digital sensors, computers and software will enable the aircraft to track and recognize advesarys long before they are aware of the Comanche's presence, a key advantage in both the reconnaissance and attack roles.
Aided target detection and classification software will automatically scan the battlefield, identifying and prioritizing targets. The target acquisition and communications system will allow burst transmissions of data to other aircraft and command and control systems. Digital communications links will enable the crew unparalleled situational awareness, making the Comanche an integral component of the digital battlefield. The armament subsystems consist of the XM301 20mm cannon, and up to 14 Hellfire anti-tank missiles, 28 Air-to-Air Stinger (ATAS) anti-aircraft missiles, or 56 2.75 inch Hydra 70 air-to-ground rockets carried internally and externally. Up to four Hellfire and two Air-to-Air Stinger (ATAS) missiles can be stowed in fully-retractable weapons bays and the gun can be rotated to a stowed position when not in use. This design feature reduces both drag and radar signature.
Mission management, status, and control information is provided over the MIL-STD-1553B databus between the mission equipment packages and the Turreted Gun System. The Comanche will have enhanced maintainability through it's modular electronics architecture and built-in diagnostics.
Features:
Sensors and avionics. In the reconnaissance role, the Comanche will be equipped with a new generation of passive sensors and a fully integrated suite of displays and communications. Advance infrared (IR) sensors will have twice the range of OH-58D Kiowa Warrior and AH-64 Apache sensors. The Comanche will be equipped with the Apache Longbow fire control radar and the Helmet Integrated Display and Sight System (HIDSS). The fully integrated avionics system will allow tactical data to be overlaid onto a digital map, allowing the crew to devote more time for target detection and classification. A triple-redundant fly-by-wire system can automatically hold the helicopter in hover or in almost any other maneuver, reducing workload, allowing the pilot to concentrate on navigation and threat avoidance. A hand-on grip permits one-handed operation.
Stealth characteristics. The Comanche incorporates more low-observable stealth features than any aircraft in Army history. The Comanche radar cross-section (RCS) is less than that of a Hellfire missile. To reduce radar cross-section, weapons can be carried internally, the gun can be rotated aft and stowed within a fairing behind the turret when not in use, and the landing gear are fully-retractable. The all-composite fuselage sides are flat and canted and rounded surfaces are avoided by use of faceted turret and engine covers. The Comanche's head-on RCS is 360 times smaller than the AH-64 Apache, 250 times less than the smaller OH-58D Kiowa Warrior, and 32 times smaller than the OH-58D's mast-mounted sight. This means the Comanche will be able to approach five times closer to an enemy radar than an Apache, or four times closer than an OH-58D, without being detected.
Noise suppression. The Comanche only radiates one-half the rotor noise of current helicopters. Noise is reduced by use of a five-bladed rotor, pioneered by the successful Boeing (McDonnell Douglas) MD-500 Defender series of light utility helicopters. The fantail eliminates interaction between main rotor and tail rotor wakes. The advanced rotor design permits operation at low speed, allowing the Comanche to sneak 40% closer to a target than an Apache, without being detected by an acoustical system.
Infrared (IR) suppression. The Comanche only radiates 25% of the engine heat of current helicopters, a critical survivability design concern in a low-flying tactical scout helicopter. The Comanche is the first helicopter in which the infrared (IR) suppression system is integrated into the airframe. This innovative Sikorsky design feature provides IR suppressors that are built into the tail-boom, providing ample length for complete and efficient mixing of engine exhaust and cooling air flowing through inlets above the tail. The mixed exhaust is discharged through slots built into an inverted shelf on the sides of the tail-boom. The gases are cooled so thoroughly that a heat-seeking missile cannot find and lock-on to the Comanche.
Crew Protection. The Comanche features a crew compartment sealed for protection against chemical or biological threats, an airframe resilient against ballistic damage, enhanced crash-worthiness, and reduced susceptibility to electromagnetic interference.
Maintainability. Comanche will be easily sustained, will require fewer personnel and support equipment, and will provide a decisive battlefield capability in day, night and adverse weather operations. Comanche has been designed to be exceptionally maintainable and easily transportable. Through its keel-beam construction, numerous access panels, easily accessible line-replaceable units/modules and advanced diagnostics, the RAH-66 possesses "designed-in" maintainability. Comanche aircraft will be able to be rapidly loaded into or unloaded from any Air Force transport aircraft.
General Characteristics, RAH-66 Comanche
Manufacturer:
Boeing Sikorsky
Power Plant:
Two T800 1,440 SHP gas turbine engines
Thrust:
1,052 shaft horsepower
Length:
47.84 feet (14.58 feet)
Width:
7.58 feet (2.31 meters)
Height:
11 feet (3.35 meters)
Rotor Diameter:
39.04 feet (11.90 meters)
Weight:
9,300 pounds empty
Primary mission:
12,349 pounds w/o radar
12,784 pounds with radar
Speed:
172 knots (330 kph) dash speed
161 knots (310 kph) cruise speed
Range:
1,200 nautical miles w/o radar
860 nautical miles with radar
Crew:
Two
Armament:
Three-barrel 20 mm Gatling gun
Stinger, Starstreak or Mistral air-to-air missiles
TOW II, Hot II or Longbow Hellfire air-to-ground missiles
Sura D 81 mm, Snora 81 mm, or Hydra 70 rockets
Army Counter Air Weapon System
Date of First Flight:
1996
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David
Thu January 16, 2003 5:31pm
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MC-130P Combat Shadow
Function: The Combat Shadow flies clandestine or low visibility, single or multi-ship low-level missions intruding politically sensitive or hostile territory to provide air refueling for special operations helicopters. The MC-130P primarily flies missions at night to reduce probability of visual acquisition and intercept by airborne threats.
Secondary mission capabilities may include airdrop of small special operations teams, bundles and combat rubber raiding craft, as well as night vision goggles, takeoff and landing procedures and in-flight refueling as a receiver.
History: MC-130Ps were previously designated HC-130N/P. However, the "H" designation is a rescue and recovery mission code and not representative of the aircraft's special operations role. In February 1996, AFSOC's tanker fleet was redesignated MC-130Ps, aligning the Combat Shadow with other M-series special operations mission aircraft. MC-130Ps have been a part of the special operations mission since the mid-80s. They provided critical air refueling to Army and Air Force helicopters during Operation Just Cause in Panama in 1989. In 1990, the aircraft deployed to Saudi Arabia and Turkey for Operation Desert Storm and provided air refueling of special operations helicopters over friendly and hostile territory.
Since Desert Storm, the MC-130P has been involved in operations Northern and Southern Watch, supporting efforts to keep Iraqi aircraft out of the no-fly zones. Although MC-130Ps left Southern Watch in 1993, they have returned periodically to relieve Air Combat Command rescue forces. The aircraft also took part in Operation Deny Flight in Yugoslavia in 1993, and Operations Restore Democracy and Uphold Democracy in Haiti in 1994. The MC-130P has been involved in operations Deliberate Force and Joint Endeavor in Bosnia since 1995.
Additionally, the MC-130P took part in Operation Assured Response in 1996, providing air refueling for the MH-53s shuttling evacuees between Liberia and the rear staging area.
In March 1997, the MC-130P was diverted from Italy to provide combat search and rescue during the evacuation of non-combatant Americans from Albania. Also in 1997, the MC-130P provided command and control and refueling support during Operation Guardian Retrieval, the evacuation of Americans from Zaire. In July 1997, the aircraft provided aerial refueling for MH-53J's when U.S. forces prepared for possible evacuations of noncombatants from Cambodia. The aircraft also was part of Operation High Flight, the search to locate an American C-141 involved in a mid-air collision with another aircraft off the coast of Angola in September 1997.
Description: Special operations forces improvements are being made to the fleet of MC-130Ps. When modifications are completed in Fiscal 2000, all MC-130Ps will feature improved navigation, communications, threat detection and countermeasures systems. When fully modified, the Combat Shadow fleet will have a fully-integrated inertial navigation and global positioning system, and night vision goggle compatible interior and exterior lighting. It will also have forward looking infrared, radar and missile warning receivers, chaff and flare dispensers, night vision goggle compatible heads-up display, satellite and data-burst communications, as well as in-flight refueling capability as a receiver (on 15 aircraft).
The Combat Shadow can fly in the day against a reduced threat. The crews fly night low-level, air refueling and formation operations using night vision goggles. To enhance the probability of mission success and survivability near populated areas, employment tactics incorporate no external lighting and no communications to avoid radar and weapons detection.
General Characteristics, MC-130P Combat Shadow
Builder:
Lockheed
Unit Flyaway Cost:
$18.6 million (Fiscal Year 1998 constant dollars)
Power Plant:
Four Allison T56-A-15 turboprop engines
Thrust:
4,910 shaft horsepower each engine
Length:
98 feet, 9 inches (30.09 meters)
Height:
38 feet, 6 inches (11.7 meters)
Wingspan:
132 feet, 7 inches (40.4 meters)
Speed:
289 mph (at sea level)
Ceiling:
33,000 feet (10,000 meters)
Maximum Take-off Weight:
155,000 pounds (69,750 kilograms)
Range:
Beyond 4,000 miles
Crew:
Officers - pilot, co-pilot, right navigator and left navigator
Enlisted - flight engineer, communications systems operator and two loadmasters
Inventory:
Active force, 19
Reserve, 0
ANG, 0
Date Deployed:
1986
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David
Thu January 16, 2003 5:31pm
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MC-130E/H Combat
Function: The MC-130E Combat Talon I and MC-130H Combat Talon II provide global, day, night and adverse weather capability to infiltrate, resupply and exfiltrate U.S. and allied special operations forces.
History: The MC-130E flew combat missions during the war in Southeast Asia and took part in the attempted rescue of Americans held at the Son Tay prisoner of war camp in 1970. In 1983, MC-130E's participated in Operation Urgent Fury to rescue Americans from the island nation of Grenada. One of the Combat Talon crews earned the Mackay Trophy for the most meritorious flight of the year by delivering Army Rangers to Point Salines Airfield amidst a barrage of anti-aircraft fire. In 1989, the MC-130E participated in Operation Just Cause in Panama, helping to seize the airfield at Rio Hato. During Desert Storm the MC-130E's primary role was psychological operations as it airdropped 11 BLU-82/B general purpose bombs and flew multiple missions air dropping and dispersing leaflets. Its secondary role was combat search and rescue.
In 1994, the MC-130E deployed to Haiti with other Air Force Special Operations Command aircraft during operations Restore Democracy and Uphold Democracy.
The MC-130H evacuated Americans from the U.S. Embassy in Liberia in 1996. In 1997, the MC-130H participated in Operation Guardian Retrieval, helping to evacuate Americans from the U.S. Embassy in Zaire. Later that year the MC-130H was part of the special operations forces called on for possible support in Cambodia.
The Talon I provided combat search and rescue and special operations forces support for Operation Southern Watch in Iraq in 1997. In September 1997, the MC-130H participated in the search for a C-141 that collided with another aircraft off the coast of Angola. The aircraft also evacuated noncombatant Americans from the Republic of the Congo in 1997. The mission earned the aircrew the Mackay Trophy.
In 1998, the MC-130s returned to Saudi Arabia during the buildup of U.S. forces to convince Iraq to comply with U.N. weapons inspections.
Description: Both aircraft are equipped with in-flight refueling equipment, terrain-following and terrain-avoidance radar, an inertial and global positioning satellite navigation system, and a high-speed aerial delivery system. The special navigation and aerial delivery systems are used to locate small drop zones and deliver people or equipment with greater accuracy and higher speeds than possible with a standard C-130. The aircraft also can penetrate hostile airspace at low altitudes, and crews are specially trained in night and adverse weather operations.
Combat Talons feature highly automated controls and displays to reduce crew size and workload. The cockpit and cargo areas are compatible with night vision goggles. The integrated control and display subsystem combines basic aircraft flight, tactical and mission sensor data into a comprehensive set of display formats that assist each operator in performing tasks efficiently.
On the MC-130H, the pilot and co-pilot displays on the cockpit instrument panel and the navigator/electronic warfare operator console -- on the aft portion of the flight deck -- each have two video displays and a data-entry keyboard. The electronic warfare operator also has a data-entry keyboard and two video displays, one of which is dedicated to electronic warfare data.
The primary pilot and co-pilot display formats include basic flight instrumentation and situational data. The display formats are available with symbology alone or with symbology overlaid with sensor video.
The navigator uses radar ground map displays, forward-looking infrared displays, tabular mission management displays and equipment status information. The electronic warfare operator's displays are used for viewing electronic warfare data and to supplement the navigators in certain critical phases.
General Characteristics, MC-130E/H Combat Talon I/II
Builder:
Lockheed
Contractor:
Lockheed Martin Federal Systems (MC-130H)
Unit Cost:
MC-130E, $45.2 million
MC-130H, $78 million (fiscal 1998 constant dollars)
Power Plant:
Four Allison T56-A-15 turboprop engines
Thrust:
4,910 shaft horsepower each engine
Length:
MC-130E: 100 feet, 10 inches (30.7 meters)
MC-130H: 99 feet, 9 inches (30.4 meters)
Height:
38 feet, 6 inches (11.7 meters)
Wingspan:
132 feet, 7 inches (40.4 meters)
Speed:
300 mph
Load:
MC-130E: 53 troops, 26 paratroopers
MC-130H: 75 troops, 52 paratroopers
Ceiling:
33,000 feet (10,000 meters)
Maximum Take-off Weight:
155,000 pounds (69,750 kilograms)
Range:
2,700 nautical miles (unlimited with air refueling)
Crew:
MC-130E: Officers - two pilots, two navigators and an electronic warfare officer; enlisted - flight engineer, two loadmasters and communications specialist
MC-130H: Officers - two pilots, a navigator and electronic warfare officer; enlisted - flight engineer and two loadmasters
Inventory:
Active force (MC-130H), 23
Reserve (MC-130E), 14
ANG, 0
Dates Deployed:
MC-130E, 1966
MC-130H, June 1991
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David
Thu January 16, 2003 6:24pm
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AT-37 Tweet
Function: The T-37 Tweet is a twin-engine jet used for training undergraduate pilots, undergraduate navigator and tactical navigator students in fundamentals of aircraft handling, and instrument, formation and night flying.
History: The T-37A made its first flight in 1955 and went into service with the Air Force in 1956. The T-37B became operational in 1959. All T-37A's have been modified to T-37B standards. A contract was awarded in August 1989 to Sabreliner Corp. for the T-37B Structural Life Extension Program. The contract included the design, testing and production of kits, installed by a U.S. Air Force contract field team, which modified or replaced critical structural components for the entire fleet, extending the capability of the T-37 into the next century. More than 1,000 T-37s were built, and 507 remain in the U.S. Air Force inventory. All have been repainted in a distinctive dark blue and white to help formation training and to ease maintenance.
Description: The twin engines and flying characteristics of the T-37 give student pilots the feel for handling the larger, faster T-38 Talon or T-1A Jayhawk later in the undergraduate pilot training course. The instructor and student sit side by side for more effective training. The cockpit has dual controls, ejection seats and a clamshell-type canopy that can be jettisoned. The T-37 has a hydraulically operated speed brakes, tricycle landing gear and a steerable nose wheel. Six rubber-cell, interconnected fuel tanks in each wing feed the main tank in the fuselage.
The T-37B has improved radio navigational equipment, UHF radio and redesigned instrument panels. Many foreign air forces fly the T-37B, including those of Thailand, Greece, Chile, Jordan, Turkey and Pakistan. Students from 12 North Atlantic Treaty Organization countries train in T-37B's at Sheppard Air Force Base, Texas. Flying the T-37C are the air forces of Portugal, Peru, Colombia and Greece, among others.
The T-37C is similar to the T-37B, but has provisions for both armament and wingtip fuel tanks. The plane can carry two, 250-pound (112.5 kilogram) bombs. Associated equipment includes computing gun sights and a 16mm gun camera. The aircraft can be fitted with cameras for reconnaissance missions.
General Characteristics, T-37 Tweet
Builder:
Cessna Aircraft Company
Unit Cost:
$164,854
Power Plant:
Two Continental J69-T-25 turbojet engines
Thrust:
1,025 pounds (461.25 kilograms), each engine
Length:
29 feet, 3 inches (8.9 meters)
Height:
9 feet, 2 inches (2.8 meters)
Wingspan:
33 feet, 8 inches (10.2 meters)
Maximum Take-off Weight:
6,625 pounds (2,981 kilograms)
Speed:
315 mph (Mach 0.4 at sea level)
Ceiling:
35,000 feet (10.6 kilometers)
Range:
460 miles (400 nautical miles)
Armament:
T-37B, none
T-37C has provisions for external armament
Crew:
Two (instructor and student)
Inventory:
Active force, 507
ANG, 0
Reserve 0
Date Deployed:
December 1956
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David
Thu January 16, 2003 6:24pm
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T-38 Talon
Function: The T-38 Talon is a twin-engine, high-altitude, supersonic jet trainer used in a variety of roles because of its design, economy of operations, ease of maintenance, high performance and exceptional safety record. It is used primarily by Air Education and Training Command for undergraduate pilot and pilot instructor training. Air Combat Command, Air Mobility Command and the National Aeronautics and Space Administration also use the T-38 in various roles.
Background: The Talon first flew in 1959. More than 1,100 were delivered to the Air Force between 1961 and 1972 when production ended. Approximately 562 remain in service throughout the Air Force.
Description: The T-38 has swept-back wings, a streamlined fuselage and tricycle landing gear with a steerable nose wheel. Two independent hydraulic systems power the ailerons, flaps, rudder and other flight control surfaces. The instructor and student sit in tandem on rocket-powered ejection seats in a pressurized, air-conditioned cockpit. Critical components are waist high and can be easily reached by maintenance crews. Refueling and preflight inspections are easily performed.
The T-38 needs as little as 2,300 feet (695.2 meters) of runway to take off and can climb from sea level to nearly 30,000 feet (9,068 meters) in one minute.
Student pilots fly the T-38A to learn supersonic techniques, aerobatics, formation, night and instrument flying and cross-country navigation. More than 60,000 pilots have earned their wings in the T-38A.
Test pilots and flight test engineers are trained in T-38A's at the U.S. Air Force Test Pilot School at Edwards Air Force Base, Calif. Air Force Materiel Command uses T-38A's to test experimental equipment such as electrical and weapon systems.
Pilots from most North Atlantic Treaty Organization countries are trained in the T-38A at Sheppard AFB, Texas, through the Euro-NATO Joint Jet Pilot Training Program.
The National Aeronautics and Space Administration uses T-38A aircraft as trainers for astronauts and as observers and chase planes on programs such as the space shuttle.
Air Education and Training Command uses a modified version, the AT-38B, to prepare pilots for fighter aircraft such as the F-15, F-16 and A-10. and F-111. This model carries external armament and weapons delivery equipment for training.
An ongoing program called Pacer Classic, the structural life extension program for the T-38, is integrating 10 modifications, including major structural renewal, into one process. As a result, the service life of T-38s should extend to the 2010. Additionally, the introduction of the T-1A Jayhawk significantly relieved the T-38's work load.
General Characteristics, T-38 Talon
Builder:
Northrop Corporation
Unit Cost:
$756,000
Power Plant:
Two General Electric J85-GE-5 turbojet engines with afterburners
Thrust:
2,900 pounds (1,315 kilograms) with afterburners
Length:
46 feet, 4 1/2 inches (14 meters)
Height:
12 feet, 10 1/2 inches (3.8 meters)
Wingspan:
25 feet, 3 inches (7.6 meters)
Maximum Take-off Weight:
12,500 pounds (5,670 kilograms)
Speed:
812 mph (Mach 1.08 at sea level)
Ceiling:
Above 55,000 feet (16,667 meters)
Range:
1,000 miles (870 nautical miles)
Armament:
T-38A: none
AT-38B has provisions for external armament
Crew:
Two (instructor and student)
Inventory:
Active force, 562
ANG, 0
Reserve 0
Date Deployed:
March 1961
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David
Thu January 16, 2003 11:24pm
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Mk. 80 Series General Pur
Function: General Purpose, low drag free-fall bomb.
Background: The Mk 80 series bombs are is a non-guided, low drag, free-fall, general purpose explosives. The cases are relatively light; approximately 45 percent of their total weight is explosive filler and are designed to be streamlined, so as to reduce aerodynamic resistance. Mk. 80 GP bombs are typically used in situations where pin-point accuracy is not critical and where maximum blast and explosive effects are desired. There are currently four variants of the Mk. 80 GP bomb: the Mk. 81 250 pound bomb, the Mk. 82 500 pound bomb, the Mk. 83 1,000 pound bomb, and the Mk. 84 2,000 pound bomb.
These bombs are usually equipped with both nose and tail mechanical fuses for ground bursts, or a radar-proximity fuse for air-bursts. For low altitude delivery, the Mk. 80 series bombs may be equipped with either a high-drag "popout" tail fin assembly or "ballute" (combination balloon/parachute) drogue assembly. These retardation devices slow the descent rate of the bomb significantly, allowing the releasing aircraft to maneuver clear of the target area prior to detonation.
Thermally protected versions of the Mk. 80 series were developed for use on aircraft carriers. These weapons are filled with a less sensitive explosive and treated to resist "cook off" in the event of exposure to an aviation fuel fire.
Two hard target penetration variants of the Mk. 80 series are currently in production. The BLU-111 is the 500lb variant and the BLU-110 is the 1,000 pound variant. The bomb case is made from forged steel, and the H-6 or Tritonal explosive filler has been replaced with PBNX-109.
Description: The basic Mk. 80 GP bomb consists of a an explosive filled metal case. Specific fuses may be added to the nose and tail sections of the case, depending on the desired blast effect, and the case can be equipped with either low drage guidance fins or a high drag "popout" fin or "ballute" assembly.
General Characteristics, Mk. 80 Series General Purpose Free Fall Bombs
Length:
Mk.81: 46 in. (1.18 meters)
Mk.82: 66.15 in. (2.21 meters)
Mk.83: 119.49 in. (3 meters)
Mk.84: 129 in.(3.31 meters)
Diameter:
Mk.81: 8.9 in.
Mk.82: 10.75 in.
Mk.83: 14.06 in.
Mk.84: 18 in.
Filler types:
H-6, Minol II, PBNX-109, Tritonal
Date Deployed:
1950s
Weight:
Mk.81: 250 lb (113 kg)
Mk.82: 500 lb (227 kg)
Mk.83: 1,000 lb (455 kg)
Mk.84: 2,000 lb (909 kg)
Filler Weight:
Mk.81:
Mk.82: 192 lb (89 kg)
Mk.83: 385 lb (202 kg)
Mk.84: 945 lb (430 kg)
Unit Cost:
Mk.81:
Mk.82: $268.50
Mk.83:
Mk.84: $3,100
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David
Sat January 18, 2003 8:53am
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The U-2 provides continuo
The U-2 provides continuous day or night, high-altitude, all-weather, stand-off surveillance of an area in direct support of U.S. and allied ground and air forces. It provides critical intelligence to decision makers through all phases of conflict, including peacetime indications and warnings, crises, low-intensity conflict and large-scale hostilities. The U-2 is a single-seat, single-engine, high-altitude, reconnaissance aircraft. Long, wide, straight wings give the U-2 glider-like characteristics. It can carry a variety of sensors and cameras, is an extremely reliable reconnaissance aircraft, and enjoys a high mission completion rate. Because of its high altitude mission, the pilot must wear a full pressure suit. The U-2 is capable of collecting multi-sensor photo, electro-optic, infrared and radar imagery, as well as performing other types of reconnaissance functions. However, the aircraft can be a difficult aircraft to fly due to its unusual landing characteristics. The aircraft is being upgraded with a lighter engine (General Electric F-118-101) that burns less fuel, cuts weight and increases power. The entire fleet should be reengined by 1998. Other upgrades are to the sensors and adding the Global Positioning System that will superimpose geo-coordinates directly on collected images.
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David
Tue February 11, 2003 12:53pm
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Titan IVB
Function: The Titan IVB is a heavy-lift space launch vehicle used to carry government payloads such as Defense Support Program, Milstar and National Reconnaissance Office satellites into space. It is launched from Patrick Air Force Base, Fla., and Vandenberg AFB, CA.
Description: The Titan IVB is the most recent and largest unmanned space booster used by the Air Force. It provides assured capability for launch of space shuttle-class payloads. The vehicle is flexible because it can be launched with no upper stage, or one of two optional upper stages for greater and varied carrying ability.
The Titan IVB consists of a liquid-fueled core and two large solid rocket boosters for increased performance. During a launch the strap-on rocket boosters are fired first. When the solid propellant is almost depleted, about two minutes into flight, the first stage is fired and the solid motors are separated from the vehicle. The second and upper stages are fired as the previous stage is depleted of fuel and separated.
The Titan IVB's core consists of an LR87 liquid-propellant rocket that features structurally independent tanks for its fuel (Aerozine 50) and oxidizer (Nitrogen Tetroxide). This minimizes the hazard of the two mixing if a leak should develop in either tank. Additionally the engines' propellant can be stored in a launch-ready state for extended periods. The use of propellants stored at normal temperature and pressure eliminates delays and gives the Titan IVB the capability to meet critical launch windows. The second stage consists of an LR91 liquid propellant rocket engine attached to an airframe, like stage 1.
History: The Titan family was established in October 1955 when the Air Force awarded Lockheed Martin (the former Martin Company) a contract to build a heavy-duty space system. It became known as the Titan I, the nation's first two-stage, intercontinental ballistic missile (ICBM) and first underground silo-based ICBM. Titan I provided many structural and propulsion techniques that were later incorporated into the Titan II. Years later, the Titan IVB evolved from the Titan III family and is similar to the Titan 34D. It was originally developed as a backup for the space shuttle in the 1980s, but has become a mainstay for heavy payloads. The last Titan IVA was launched in August 1998. The Titan IVB is an upgraded rocket having a new guidance system, flight termination system, ground checkout system, solid rocket motor upgrade and a 25 percent increase in thrust capability. The first Titan IVB flew on Feb. 23, 1997.
General Characteristics, Titan IVB
Builder:
Lockheed-Martin Astronautics
Power Plant, First Stage:
Stage 0 currently consists of two solid-rocket motors; Stage 1 uses an LR87 liquid-propellant rocket engine; Stage 2 uses the LR91 liquid-propellant engine
Optional upper stages include the Centaur and inertial upper stage
Thrust:
Solid rocket motors provide 1.7 million pounds per motor at liftoff
First stage provides an average of 548,000 pounds and second stage provides an average of 105,000 pounds
Optional Centaur upper stage provides 33,100 pounds
Inertial upper stage provides up to 41,500 pounds
Lift Capability:
Can carry up to 47,800 pounds (21,682 kilograms) into a low-earth orbit up to 12,700 pounds (5,761 kilograms) into a geosynchronous orbit when launched from Cape Canaveral Air Station, FL
Can carry up to 38,800 pounds (17,599 kilograms) into a low-earth polar orbit when launched from Vandenberg AFB.
Using inertial upper stage, can transport up to 5,250 pounds (2,381 kilograms) into geosynchronous orbit
Length:
Up to 204 feet (62.17 meters)
Maximum Takeoff Weight:
Approximately 2.2 million pounds (997,913 kilograms)
Guidance System:
Ring laser gyro guidance system manufactured by Honeywell
Date Deployed:
June 1989
Launch Sites:
Cape Canaveral AS, FL
Vandenberg AFB, CA
Inventory:
14 (changes with each launch)
Unit Cost:
Approximately $250-350 million, depending on launch configuration
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David
Tue February 11, 2003 2:08pm
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M90 Radar Chronograph
Function: To measure the muzzle velocity of field artillery weapons.
Description: The M90 Radar Chronograph provides muzzle velocity data to the Fire Direction Center (FDC), enabling the FDC to compute accurate fire control solutions. This data input is critical to FD computations. Each artillery battery has one M90.
The M90 Radar Chronograph is a Doppler radar system that consists of a radio frequency antenna, transmitter-receiver, readout display, mounting brackets that are semi-permanently mounted to each artillery weapon, and the necessary cables. The antenna and transmitter-receiver are mounted on a nonrecoiling part of the howitzer and are connected to the display/control unit by a 30-meter cable. The radar chronograph is powered by an external source of 18 - 30 volts DC. The M90 is not able to measure muzzle velocities of rocket-assisted projectiles or basebleed projectiles.
General Characteristics, M90 Radar Chronograph
Length:
33 inches (83.82 centimeters)
Width:
380 inches (96.52 centimeters)
Height:
20 inches (50.8 centimeters)
Weight:
200 pounds (90.8 kilograms) including transit case and accessories
Unit Replacement Cost:
$23,034
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David
Fri March 21, 2003 6:17am
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High-power microwave (HPM
High-power microwave (HPM) sources have been under investigation for several years as potential weapons for a variety of combat, sabotage, and terrorist applications. Due to classification restrictions, details of this work are relatively unknown outside the military community and its contractors. A key point to recognize is the insidious nature of HPM. Due to the gigahertz-band frequencies (4 to 20 GHz) involved, HPM has the capability to penetrate not only radio front-ends, but also the most minute shielding penetrations throughout the equipment. At sufficiently high levels, as discussed, the potential exists for significant damage to devices and circuits. For these reasons, HPM should be of interest to the broad spectrum of EMC practitioners.
Electromagnetic Pulse (EMP) and High Powered Microwave (HMP) Weapons offer a significant capability against electronic equipment susceptible to damage by transient power surges. This weapon generates a very short, intense energy pulse producing a transient surge of thousands of volts that kills semiconductor devices. The conventional EMP and HMP weapons can disable non-shielded electronic devices including practically any modern electronic device within the effective range of the weapon.
The effectiveness of an EMP device is determined by the power generated and the characteristic of the pulse. The shorter pulse wave forms, such as microwaves, are far more effective against electronic equipment and more difficult to harden against. Current efforts focus on converting the energy from an explosive munitions to supply the electromagnetic pulse. This method produces significant levels of directionally focused electromagnetic energy.
Future advances may provide the compactness needed to weaponize the capability in a bomb or missile warhead. Currently, the radius of the weapon is not as great as nuclear EMP effects. Open literature sources indicate that effective radii of “hundreds of meters or more” are possible. EMP and HPM devices can disable a large variety of military or infrastructure equipment over a relatively broad area. This can be useful for dispersed targets.
A difficulty is determining the appropriate level of energy to achieve the desired effects. This will require detailed knowledge of the target equipment and the environment (walls, buildings). The obvious counter-measure is the shielding or hardening of electronic equipment. Currently, only critical military equipment is hardened e.g., strategic command and control systems. Hardening of existing equipment is difficult and adds significant weight and expense. As a result, a large variety of commercial and military equipment will be susceptible to this type of attack.
The US Navy reportedly used a new class of highly secret, non-nuclear electromagnetic pulse warheads during the opening hours of the Persian Gulf War to disrupt and destroy Iraqi electronics systems. The warheads converted the energy of a conventional explosion into a pulse of radio energy. The effect of the microwave attacks on Iraqi air defense and headquarters was difficult to determine because the effects of the HPM blasts were obscured by continuous jamming, the use of stealthy F-117 aircraft, and the destruction of Iraq's electrical grid. The warheads used during the Gulf War were experimental warheads, not standard weapons deployed with fielded forces.
Col. William G. Heckathorn, commander of the Phillips Research Site and the deputy director of the Directed Energy Directorate of the Air Force Research Laboratory, was presented the Legion of Merit medal during special retirement ceremonies in May 1998. In a citation accompanying the medal, Col. Heckathorn was praised for having provided superior vision, leadership, and direct guidance that resulted in the first high-power microwave weapon prototypes delivered to the warfighter. The citation noted that "Col. Heckathorn united all directed energy development within Army, Navy and Air Force, which resulted in an efficient, focused, warfighter-oriented tri-service research program." In December of 1994 he came to Kirtland to become the director of the Advanced Weapons and Survivability Directorate at the Phillips Laboratory. Last year he became the commander of the Phillips Laboratory while still acting as the director of the Advanced Weapons and Survivability Directorate.
As with a conventional munition, a microwave munition is a "single shot" munition that has a similar blast and fragmentation radius. However, while the explosion produces a blast, the primary mission is to generate the energy that powers the microwave device. Thus, for a microwave munition, the primary kill mechanism is the microwave energy, which greatly increases the radius and the footprint by, in some cases, several orders of magnitude. For example, a 2000-pound microwave munition will have a minimum radius of approximately 200 meters, or footprint of approximately 126,000 square meters.
Studies have examined the incorporation of a high power microwave weapon into the weapons bay of a conceptual uninhabited combat aerial vehicle. The CONOPS, electromagnetic compatibility and hardening (to avoid a self-kill), power requirements and potential power supplies, and antenna characteristics have been analyzed. Extensive simulations of potential antennas have been performed. The simulations examined the influence of the aircraft structure on the antenna patterns and the levels of leakage through apertures in the weapons bay. Other investigations examined issues concerning the electromagnetic shielding effectiveness of composite aircraft structures.
Collateral damage from E-bombs is dependent on the size and design of the specific bomb. An E-bomb that utilizes explosive power to obtain its damaging microwaves will result in typical blast and shrapnel damage. Ideally, an E-Bomb would be designed to minimize and dissipate most of the mechanical collateral damage. Human exposure to microwave radiation is hazardous within several meters of the epicenter. However, there is a relatively low risk of bodily damage at further distances.
Any non-military electronics within range of the E-bomb that have not been protected have a high probability of being damaged or destroyed. The best way to defend against E-bomb attack is to destroy the platform or delivery vehicle in which the E-bomb resides. Another method of protection is to keep all essential electronics within an electrically conductive enclosure, called a Faraday cage. This prevents the damaging electromagentic field from interacting with vital equipment. The problem with Faraday cages is that most vital equipment needs to be in contact with the outside world. This contact point can allow the electromagentic field to enter the cage, which ultimately renders the enclosure useless. There are ways to protect against these Faraday cage flaws, but the fact remains that this is a dangerous weakpoint. In most circumstances E-bombs are categorized as 'non-lethal weapons' because of the minimal collateral damage they create. The E-bomb's 'non-lethal' categorization gives military commanders more politically-friendly options to choose from.
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David
Fri March 21, 2003 6:30am
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M1A2 MBT
The mission of the M1A2 Abrams tank is to close with and destroy enemy forces using firepower, maneuver, and shock effect. The M1A2 is being fielded to armor battalions and cavalry squadrons of the heavy force. In lieu of new production, the Army is upgrading approximately 1,000 older M1 tanks to the M1A2 configuration. Going from the M1A1 to M1A2, the Army did several things that significantly reduced ballistic vulnerability, adding dual, redundant harnesses components, redundant data buses, distributing electrical power systems so all the power controls are not in one place.
During the Army's current M1A2 procurement program about 1,000 older, less capable M1 series tanks will be upgraded to the M1A2 configuration and fielded to the active forces. There is currently no plan to field the M1A2 to the ARNG. The Army has procured 62 new tanks in the A2 configuration and as of early 1997 completed the conversion of 368 older M1s to M1A2s. The first three years of M1A2 Abrams upgrade tank work, between 1991-1993, delivered 267 tanks. A multi-year procurement of 600 M1A2 upgrade tanks was run at Lima [Ohio] Army tank plant from 1996 to 2001.
Further M1A2 improvements, called the System Enhancement Program (SEP), are underway to enhance the tank's digital command and control capabilities and to to improve the tank's fightability and lethality. In FY 1999, the Army began upgrading M1s to the M1A2 System Enhancement Program (SEP) configuration. In 1994, the Army awarded a contract to General Dynamics Land Systems to design system enhancements to the M1A2, and awarded GDLS another contact in 1995 to supply 240 of the enhanced M1A2s, with delivery scheduled to begin in 1999. M1A2 SEP started fielding in 2000. It adds second generation forward looking infrared technology to the gunner's and commander's thermal sights. This sensor also will be added to older M1A2s starting in FY 2001.
A multi-year contract for 307 M1A2 Abrams Systems Enhancement Program (SEP) tanks was awarded in March 2001 with production into 2004. The current Army plan allows for a fleet of 588 M1A2 SEP, 586 M1A2 and 4,393 M1A1 tanks. The potential exits for a retrofit program of 129 M1A2 tanks to the SEP configuration between 2004 and 2005. Initial fielding of the M1A2 to the Army's 1st Cavalry Division, Fort Hood, Texas, was complete by August 1998. Fielding to the 3rd Armored Cavalry Regiment, Ft. Carson, Colorado ended in 2000. Fielding of the M1A2 (SEP) began in spring 2000 with the 4th Infantry Division, Fort Hood, Texas, and continues. Rolling over of the 1st Cavalry Division's M1A2 tanks to new M1A2 (SEP) tank began in 2001 and continues.
The M1A2 SEP (System Enhancement Package), is the digital battlefield centerpiece for Army XXI. It is the heavy force vehicle that will lead Armor into the next century and transition the close combat mission to the Future Combat System (FCS). The M1A2 SEP is an improved version of the M1A2. It contains numerous improvements in command and control, lethality and reliability. The M1A2 System Enhanced Program is an upgrade to the computer core that is the essence of the M1A2 tank. The SEP upgrade includes improved processors, color and high resolution flat panel displays, increased memory capacity, user friendly Soldier Machine Interface (SMI) and an open operating system that will allow for future growth. Major improvements include the integration of the Second Generation Forward Looking Infared (2nd Gen FLIR) sight, the Under Armor Auxiliary Power Unit (UAAPU) and a Thermal Management System (TMS).
Increased funding for Stryker and Future Combat Systems (FCS) came as a result of Army decisions in 2002 to terminate or restructure some 48 systems in the FY '04 - '09 Program Objective Memorandum (POM) long-term spending plan. Among the systems terminated were: United Defense's Crusader self-propelled howitzer and the A3 upgrade for the Bradley Fighting vehicle, GD's M1A2 Abrams System Enhancement Program, Lockheed Martin's Army Tactical Missile System Block II and the associated pre-planned product improvement version of Northrop Grumman's Brilliant Anti-armor (BAT) munition, Raytheon's Stinger missile and Improved Target Acquisition System, and Textron's Wide Area Mine.
The 2nd Generation Forward Looking InfraRed sighting system (2nd Gen FLIR) will replace the existing Thermal Image System (TIS) and the Commander's Independent Thermal Viewer. The incorporation of 2nd Gen FLIR into the M1A2 tank will require replacement of all 1st Gen FLIR components. From the warfighter perspective, this is one of the key improvements on the SEP. The 2nd Gen FLIR is a fully integrated engagement-sighting system designed to provide the gunner and tank commander with significantly improved day and night target acquisition and engagement capability. This system allows 70% better acquisition, 45% quicker firing and greater accuracy. In addition, a gain of 30% greater range for target acquisition and identification will increase lethality and lessen fratricide. The Commander's Independent Thermal Viewer (CITV) provides a hunter killer capability. The 2nd GEN FLIR is a variable power sighting system ranging from 3 or 6 power (wide field of view) for target acquisition and 13, 25 or 50 power (narrow field of view) for engaging targets at appropriate range.
The UAAPU consist of a turbine engine, a generator, and a hydraulic pump. The generator is capable of producing 6 Kilowatts of electrical power at 214 Amps, 28 vdc, and the hydraulic pump is capable of delivering 10 Kilowatts of hydraulic power. The UAAPU can meet the electrical and hydraulic power to operate all electronic and hydraulic components used during mounted surveilance operations and charge the tank's main batteries. The UAAPU will reduce Operational and Support cost by utilizing the same fuel as the tank at a reduced rate of 3-5 gallons per operational hour. The UAAPU is mounted on the left rear sponson fuel cell area and weighs 510 pounds.
Another improvement in the M1A2 SEP is the Thermal Management System (TMS) which keeps the temperature within the crew compartment under 95 degrees and the touch temperature of electronic units under 125 degrees during extreme conditions. By reducing the temperature in the crew compartment for the crew and electronic units, this increases the operational capability for both soldiers and the vehicle. The TMS consists of an Air Handling Unit (AHU) and a Vapor Compression System Unit (VCSU) capable of providing 7.5 Kilowatts of cooling capacity for the crew and Line Repairable Units (LRUs). The AHU is mounted in the turret bustle and the VCSU is mounted forward of the Gunner's Primary Sight (GPS). The TMS uses enviromentally friendly R134a refrigerant and propylene glycol/water mixture to maintain the LRU touch temperature at less than 140 degrees Fahrenheit. The TMS is mounted in the left side of turret bussel and weighs 384 pounds.
The Army requires that all systems operate in the Army Common Operating Environment (ACOE) to improve combined arms operations. Digitization and information dominance across the entire Army for tactical elements is accomplished using Force XXI Battle Command for Brigade and Below (FBCB2) software. In Abrams, FBCB2 software is hosted on a separate card that enables situational awareness across the entire spectrum of tactical operation. It improves message flow, through 34 joint variable message formats, reports ranging from contact reports to logistic roll ups, as well as automatically providing vehicle location to friendly systems. The SEP allows for digital data dissemination with improved ability to optimize information based operations and maintain a relevant common picture while executing Force XXI full dimensional operation. This enhancement increases capability to control the battlefield tempo while improving lethality and survivability. Finally to ensure crew proficiency is maintained, each Armor Battalion is fielded an improved Advanced Gunnery Training System (AGTS) with state-of-the-art graphics.
Changes to the M1A2 Abrams Tank contained in the System Enhancement Program (SEP) and "M1A2 Tank FY 2000" configuration are intended to improve lethality, survivability, mobility, sustainability and provide increased situational awareness and command & control enhancements necessary to provide information superiority to the dominant maneuver force. The Abrams Tank and the Bradley Fighting Vehicle are two central components of the dominant maneuver digital force.
System Enhancement Program upgrades are intended to:
improve target detection, recognition and identification with the addition of two 2nd generation FLIRs.
incorporate an under armor auxiliary power unit to power the tank and sensor suites.
incorporate a thermal management system to provide crew and electronics cooling.
increase memory and processor speeds and provide full color map capability.
provide compatibility with the Army Command and Control Architecture to ensure the ability to share command & control and situational awareness with all components of the combined arms team.
Additional weight reduction, embedded battle command, survivability enhancement, signature management, safety improvement, and product upgrade modifications to the M1A2 will comprise the "M1A2 Tank FY 2000" configuration fielded to units of the digital division beginning in FY 2000.
The M1A2 IOT&E was conducted from September-December 1993 at Fort Hood, TX and consisted of a gunnery phase and a maneuver phase. The Director determined that the test was adequate, the M1A2 was operationally effective, but not operationally suitable and unsafe. That assessment was based on poor availability and reliability of the tank, instances of the uncommanded tube and turret movement, inadvertent .50 caliber machine gun firing, and hot surfaces which caused contact burns.
FOT&E #1 was conducted in September-October 1995 in conjunction with the New Equipment Training for two battalion sized units. Despite assurances from the Army that all corrective actions were applied, numerous instances of uncommanded tube and turret movement, Commander's Independent Display (CID) lockup and contact burns continued during FOT&E #1. The follow-on test was placed on hold and the Army "deadlined" the two battalions of M1A2 tanks at Fort Hood for safety reasons. The PM isolated 30 "root causes" of the safety problems and completed hardware and software upgrades in June 1996 which were assessed in FOT&E #2.
The M1A2 TEMP was approved during 2QFY98. This TEMP includes a coordinated plan for FOT&E #3 of the M1A2 in conjunction with the IOT&E of the Bradley Fighting Vehicle in FY99 at Fort Hood, TX. This combined operational test will consist of 16 force-on-force battles between a Bradley Fighting Vehicle System-A3/M1A2 SEP combined arms team and M1A1/ Bradley-ODS combined arms team. Additionally, it will serve as the operational test for the 2d Generation FLIR. This approach implements the Secretary of Defense theme of combining testing in order to save resources and ensure a more realistic operational environment.
The Army and DOT&E completed vulnerability assessment efforts and concluded that the "M1A2 Tank FY 2000" is a significant change from the original M1A2 design and will require a system-level survivability evaluation. This evaluation will rely on full-up system level testing of two systems, component and sub-system level testing, modeling and simulation, existing data, and previous testing to assess susceptibility and vulnerability of the "M1A2 Tank FY 2000" and its crew to the expected threat and to assess battle damage repair capabilities.
The M1A2 Abrams Tank with the corrective actions applied by the Program Manager during FY96 is assessed to be operationally effective and suitable. The availability, reliability, fuel consumption, and safety problems observed in previous testing have been corrected. FOT&E #2 was adequately conducted in accordance with approved test plans and the Abrams TEMP. There were no observed instances of the uncommanded tube and turret movement, inadvertent .50 caliber machine gun firing, and hot surfaces which caused contact burns in previous testing.
The largest area of technical risk to the program is the development of the Embedded Battle Command software which is intended to provide friendly and enemy situational awareness and shared command & control information throughout the combined arms team. This software is being developed as a Horizontal Technology Insertion program and will be provided to the weapon systems and C2 nodes of the combined arms team in FY00. This development schedule is high risk and could adversely impact the M1A2 schedule.
In late 2002 the Army experienced a tragic accident involving the M1A2 Abrams main battle tank. While the crew of the M1A2 was operating the vehicle, a failure within the vehicle's Nuclear, Biological, Chemical (NBC) main system occurred which resulted in an NBC filter fire. One soldier died and 9 others received injuries. While there are numerous factors involved in this accident, the primary cause of the NBC Filter fire is an air cycle machine seizure, caused by dirt ingestion.
The M1A2 tank provides various warnings and cautions to crewmembers in the case of an NBC system problem. These warnings and cautions are displayed visually at the Commander's Integrated Display (CID) and at the Driver's Integrated Display (DID); additionally, an Audio tone is transmitted to each crewman via the Vehicular Intercommunication Set (VIS). The audio warning is generated from the tank's Analog Input Module (AIM) by way of the 2W119-5 wiring harness (Y-cable) which is connected to the driver's station, full-function, control box (AN/VIC 3). This Y-cable must be connected to the driver's control box at the J3 connector with the driver's CVC plugged into the P4 end of the Y-cable. Failure to properly hookup the 2W119-5 cable will not interfere with vehicle communications, but it will result in NO NBC warning tone being heard. In addition to the accident vehicle, several other M1A2 tanks at this installation were found to have the same incorrect connection. Commanders should ensure that each M1A2 in their command is inspected to ensure that this system is correctly connected. The NBC system should not be used until the inspection is complete.
If an NBC warning message is given (visually or audio), crews should immediately press NBC MAIN pushbutton on the CID to turn off the NBC main system. Continued use of the NBC main system will result in an NBC filter fire.
The NBC system is a critical component of the M1A2; it provides crews with increased protection when operating in a combat environment. This system requires proper servicing and checks as outlined in the technical manual. Ensure that all NBC sponson bolts and hardware are properly mounted and secure at all times. Failure to do so can result in the build up of dirt and dust within the NBC sponson box with the potential of damaging the Air Cycle Machine (ACM) and other components.
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David
Fri March 21, 2003 6:30am
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M1A2 MBT
The mission of the M1A2 Abrams tank is to close with and destroy enemy forces using firepower, maneuver, and shock effect. The M1A2 is being fielded to armor battalions and cavalry squadrons of the heavy force. In lieu of new production, the Army is upgrading approximately 1,000 older M1 tanks to the M1A2 configuration. Going from the M1A1 to M1A2, the Army did several things that significantly reduced ballistic vulnerability, adding dual, redundant harnesses components, redundant data buses, distributing electrical power systems so all the power controls are not in one place.
During the Army's current M1A2 procurement program about 1,000 older, less capable M1 series tanks will be upgraded to the M1A2 configuration and fielded to the active forces. There is currently no plan to field the M1A2 to the ARNG. The Army has procured 62 new tanks in the A2 configuration and as of early 1997 completed the conversion of 368 older M1s to M1A2s. The first three years of M1A2 Abrams upgrade tank work, between 1991-1993, delivered 267 tanks. A multi-year procurement of 600 M1A2 upgrade tanks was run at Lima [Ohio] Army tank plant from 1996 to 2001.
Further M1A2 improvements, called the System Enhancement Program (SEP), are underway to enhance the tank's digital command and control capabilities and to to improve the tank's fightability and lethality. In FY 1999, the Army began upgrading M1s to the M1A2 System Enhancement Program (SEP) configuration. In 1994, the Army awarded a contract to General Dynamics Land Systems to design system enhancements to the M1A2, and awarded GDLS another contact in 1995 to supply 240 of the enhanced M1A2s, with delivery scheduled to begin in 1999. M1A2 SEP started fielding in 2000. It adds second generation forward looking infrared technology to the gunner's and commander's thermal sights. This sensor also will be added to older M1A2s starting in FY 2001.
A multi-year contract for 307 M1A2 Abrams Systems Enhancement Program (SEP) tanks was awarded in March 2001 with production into 2004. The current Army plan allows for a fleet of 588 M1A2 SEP, 586 M1A2 and 4,393 M1A1 tanks. The potential exits for a retrofit program of 129 M1A2 tanks to the SEP configuration between 2004 and 2005. Initial fielding of the M1A2 to the Army's 1st Cavalry Division, Fort Hood, Texas, was complete by August 1998. Fielding to the 3rd Armored Cavalry Regiment, Ft. Carson, Colorado ended in 2000. Fielding of the M1A2 (SEP) began in spring 2000 with the 4th Infantry Division, Fort Hood, Texas, and continues. Rolling over of the 1st Cavalry Division's M1A2 tanks to new M1A2 (SEP) tank began in 2001 and continues.
The M1A2 SEP (System Enhancement Package), is the digital battlefield centerpiece for Army XXI. It is the heavy force vehicle that will lead Armor into the next century and transition the close combat mission to the Future Combat System (FCS). The M1A2 SEP is an improved version of the M1A2. It contains numerous improvements in command and control, lethality and reliability. The M1A2 System Enhanced Program is an upgrade to the computer core that is the essence of the M1A2 tank. The SEP upgrade includes improved processors, color and high resolution flat panel displays, increased memory capacity, user friendly Soldier Machine Interface (SMI) and an open operating system that will allow for future growth. Major improvements include the integration of the Second Generation Forward Looking Infared (2nd Gen FLIR) sight, the Under Armor Auxiliary Power Unit (UAAPU) and a Thermal Management System (TMS).
Increased funding for Stryker and Future Combat Systems (FCS) came as a result of Army decisions in 2002 to terminate or restructure some 48 systems in the FY '04 - '09 Program Objective Memorandum (POM) long-term spending plan. Among the systems terminated were: United Defense's Crusader self-propelled howitzer and the A3 upgrade for the Bradley Fighting vehicle, GD's M1A2 Abrams System Enhancement Program, Lockheed Martin's Army Tactical Missile System Block II and the associated pre-planned product improvement version of Northrop Grumman's Brilliant Anti-armor (BAT) munition, Raytheon's Stinger missile and Improved Target Acquisition System, and Textron's Wide Area Mine.
The 2nd Generation Forward Looking InfraRed sighting system (2nd Gen FLIR) will replace the existing Thermal Image System (TIS) and the Commander's Independent Thermal Viewer. The incorporation of 2nd Gen FLIR into the M1A2 tank will require replacement of all 1st Gen FLIR components. From the warfighter perspective, this is one of the key improvements on the SEP. The 2nd Gen FLIR is a fully integrated engagement-sighting system designed to provide the gunner and tank commander with significantly improved day and night target acquisition and engagement capability. This system allows 70% better acquisition, 45% quicker firing and greater accuracy. In addition, a gain of 30% greater range for target acquisition and identification will increase lethality and lessen fratricide. The Commander's Independent Thermal Viewer (CITV) provides a hunter killer capability. The 2nd GEN FLIR is a variable power sighting system ranging from 3 or 6 power (wide field of view) for target acquisition and 13, 25 or 50 power (narrow field of view) for engaging targets at appropriate range.
The UAAPU consist of a turbine engine, a generator, and a hydraulic pump. The generator is capable of producing 6 Kilowatts of electrical power at 214 Amps, 28 vdc, and the hydraulic pump is capable of delivering 10 Kilowatts of hydraulic power. The UAAPU can meet the electrical and hydraulic power to operate all electronic and hydraulic components used during mounted surveilance operations and charge the tank's main batteries. The UAAPU will reduce Operational and Support cost by utilizing the same fuel as the tank at a reduced rate of 3-5 gallons per operational hour. The UAAPU is mounted on the left rear sponson fuel cell area and weighs 510 pounds.
Another improvement in the M1A2 SEP is the Thermal Management System (TMS) which keeps the temperature within the crew compartment under 95 degrees and the touch temperature of electronic units under 125 degrees during extreme conditions. By reducing the temperature in the crew compartment for the crew and electronic units, this increases the operational capability for both soldiers and the vehicle. The TMS consists of an Air Handling Unit (AHU) and a Vapor Compression System Unit (VCSU) capable of providing 7.5 Kilowatts of cooling capacity for the crew and Line Repairable Units (LRUs). The AHU is mounted in the turret bustle and the VCSU is mounted forward of the Gunner's Primary Sight (GPS). The TMS uses enviromentally friendly R134a refrigerant and propylene glycol/water mixture to maintain the LRU touch temperature at less than 140 degrees Fahrenheit. The TMS is mounted in the left side of turret bussel and weighs 384 pounds.
The Army requires that all systems operate in the Army Common Operating Environment (ACOE) to improve combined arms operations. Digitization and information dominance across the entire Army for tactical elements is accomplished using Force XXI Battle Command for Brigade and Below (FBCB2) software. In Abrams, FBCB2 software is hosted on a separate card that enables situational awareness across the entire spectrum of tactical operation. It improves message flow, through 34 joint variable message formats, reports ranging from contact reports to logistic roll ups, as well as automatically providing vehicle location to friendly systems. The SEP allows for digital data dissemination with improved ability to optimize information based operations and maintain a relevant common picture while executing Force XXI full dimensional operation. This enhancement increases capability to control the battlefield tempo while improving lethality and survivability. Finally to ensure crew proficiency is maintained, each Armor Battalion is fielded an improved Advanced Gunnery Training System (AGTS) with state-of-the-art graphics.
Changes to the M1A2 Abrams Tank contained in the System Enhancement Program (SEP) and "M1A2 Tank FY 2000" configuration are intended to improve lethality, survivability, mobility, sustainability and provide increased situational awareness and command & control enhancements necessary to provide information superiority to the dominant maneuver force. The Abrams Tank and the Bradley Fighting Vehicle are two central components of the dominant maneuver digital force.
System Enhancement Program upgrades are intended to:
improve target detection, recognition and identification with the addition of two 2nd generation FLIRs.
incorporate an under armor auxiliary power unit to power the tank and sensor suites.
incorporate a thermal management system to provide crew and electronics cooling.
increase memory and processor speeds and provide full color map capability.
provide compatibility with the Army Command and Control Architecture to ensure the ability to share command & control and situational awareness with all components of the combined arms team.
Additional weight reduction, embedded battle command, survivability enhancement, signature management, safety improvement, and product upgrade modifications to the M1A2 will comprise the "M1A2 Tank FY 2000" configuration fielded to units of the digital division beginning in FY 2000.
The M1A2 IOT&E was conducted from September-December 1993 at Fort Hood, TX and consisted of a gunnery phase and a maneuver phase. The Director determined that the test was adequate, the M1A2 was operationally effective, but not operationally suitable and unsafe. That assessment was based on poor availability and reliability of the tank, instances of the uncommanded tube and turret movement, inadvertent .50 caliber machine gun firing, and hot surfaces which caused contact burns.
FOT&E #1 was conducted in September-October 1995 in conjunction with the New Equipment Training for two battalion sized units. Despite assurances from the Army that all corrective actions were applied, numerous instances of uncommanded tube and turret movement, Commander's Independent Display (CID) lockup and contact burns continued during FOT&E #1. The follow-on test was placed on hold and the Army "deadlined" the two battalions of M1A2 tanks at Fort Hood for safety reasons. The PM isolated 30 "root causes" of the safety problems and completed hardware and software upgrades in June 1996 which were assessed in FOT&E #2.
The M1A2 TEMP was approved during 2QFY98. This TEMP includes a coordinated plan for FOT&E #3 of the M1A2 in conjunction with the IOT&E of the Bradley Fighting Vehicle in FY99 at Fort Hood, TX. This combined operational test will consist of 16 force-on-force battles between a Bradley Fighting Vehicle System-A3/M1A2 SEP combined arms team and M1A1/ Bradley-ODS combined arms team. Additionally, it will serve as the operational test for the 2d Generation FLIR. This approach implements the Secretary of Defense theme of combining testing in order to save resources and ensure a more realistic operational environment.
The Army and DOT&E completed vulnerability assessment efforts and concluded that the "M1A2 Tank FY 2000" is a significant change from the original M1A2 design and will require a system-level survivability evaluation. This evaluation will rely on full-up system level testing of two systems, component and sub-system level testing, modeling and simulation, existing data, and previous testing to assess susceptibility and vulnerability of the "M1A2 Tank FY 2000" and its crew to the expected threat and to assess battle damage repair capabilities.
The M1A2 Abrams Tank with the corrective actions applied by the Program Manager during FY96 is assessed to be operationally effective and suitable. The availability, reliability, fuel consumption, and safety problems observed in previous testing have been corrected. FOT&E #2 was adequately conducted in accordance with approved test plans and the Abrams TEMP. There were no observed instances of the uncommanded tube and turret movement, inadvertent .50 caliber machine gun firing, and hot surfaces which caused contact burns in previous testing.
The largest area of technical risk to the program is the development of the Embedded Battle Command software which is intended to provide friendly and enemy situational awareness and shared command & control information throughout the combined arms team. This software is being developed as a Horizontal Technology Insertion program and will be provided to the weapon systems and C2 nodes of the combined arms team in FY00. This development schedule is high risk and could adversely impact the M1A2 schedule.
In late 2002 the Army experienced a tragic accident involving the M1A2 Abrams main battle tank. While the crew of the M1A2 was operating the vehicle, a failure within the vehicle's Nuclear, Biological, Chemical (NBC) main system occurred which resulted in an NBC filter fire. One soldier died and 9 others received injuries. While there are numerous factors involved in this accident, the primary cause of the NBC Filter fire is an air cycle machine seizure, caused by dirt ingestion.
The M1A2 tank provides various warnings and cautions to crewmembers in the case of an NBC system problem. These warnings and cautions are displayed visually at the Commander's Integrated Display (CID) and at the Driver's Integrated Display (DID); additionally, an Audio tone is transmitted to each crewman via the Vehicular Intercommunication Set (VIS). The audio warning is generated from the tank's Analog Input Module (AIM) by way of the 2W119-5 wiring harness (Y-cable) which is connected to the driver's station, full-function, control box (AN/VIC 3). This Y-cable must be connected to the driver's control box at the J3 connector with the driver's CVC plugged into the P4 end of the Y-cable. Failure to properly hookup the 2W119-5 cable will not interfere with vehicle communications, but it will result in NO NBC warning tone being heard. In addition to the accident vehicle, several other M1A2 tanks at this installation were found to have the same incorrect connection. Commanders should ensure that each M1A2 in their command is inspected to ensure that this system is correctly connected. The NBC system should not be used until the inspection is complete.
If an NBC warning message is given (visually or audio), crews should immediately press NBC MAIN pushbutton on the CID to turn off the NBC main system. Continued use of the NBC main system will result in an NBC filter fire.
The NBC system is a critical component of the M1A2; it provides crews with increased protection when operating in a combat environment. This system requires proper servicing and checks as outlined in the technical manual. Ensure that all NBC sponson bolts and hardware are properly mounted and secure at all times. Failure to do so can result in the build up of dirt and dust within the NBC sponson box with the potential of damaging the Air Cycle Machine (ACM) and other components.
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