David
Thu December 19, 2002 5:38pm
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L-R, Rodrigo Vasquez III,
L-R, Rodrigo Vasquez III, the Army's 75,800th recruit poses for pictures alongside his recruiter, mother and senior Army leadership. (L to R) Vasquez, Staff Sgt. Chris Stovall, Genoveva Vasquez, Army Secretary Thomas White and Maj. Gen. Dennis Cavin, Army Recruiting Command commanding general.
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David
Tue January 7, 2003 11:15pm
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OH-6A 'Loach'
The Boeing (McDonnell Douglas - formerly Hughes model 369A) OH-6A was designed for use as a military scout during the Vietnam war to meet the U. S. Army's need for an extremely maneuverable light observation helicopter (LOH). Initially fielded in Vietnam in early 1968, the Hughes OH-6A was used for command and control, observation, target acquisition, and reconnaissance.
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David
Tue January 7, 2003 11:20pm
Rating: 8
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Bell UH-1 Helicopter Gun
UH-1B/UH-1C "Hueys" were used with moderate success as a gun ship with door mounting M60D 7.62 machine guns on the M23 armament subsystem. They could also be armed with a pod or side-mounting six-barrel "Minigun" and seven-tube XM157 or XM158 2.75 inch (70mm) rocket launcher on the Emerson Electric M21 armament subsystem, and the M5 chin-turret mount for a 40mm grenade launcher. The UH-1B was also armed with two fixed-mounting M24A1 20mm cannon on the XM31 armament subsystem. The M60A1 reflex sight was used for sighting guns and rockets on the UH-1B, UH-1C, and UH-1M "Huey". With the fielding of the larger UH-1D as the Army's primary utility helicopter, the smaller UH-1Bs/UH-1Cs assumed the gunship role as their primary mission.
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David
Tue January 7, 2003 11:33pm
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CH-21B Shawnee transporti
The CH-21B was first deployed to Vietnam in December 1961 with the Army's 8th and 57th Transportation Companies, in support of ARVN (Army Vietnam) troops. The CH21B/CH-21C Shawnee could be armed with 7.62mm or 12.7mm door guns. The CH-21 was relatively slow. It's cables and fuel lines were so vulnerable to small arms fire.
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David
Sat January 11, 2003 9:06pm
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S.S. Valencia
Leaving San Francisco, California, circa 27 June 1898, with men of the First North Dakota Volunteer Regiment aboard. They were part of the Army's third expedition to take reinforcements to Manila.
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David
Thu January 16, 2003 12:30am
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C-17 Globemaster III
Function: The C-17 Globemaster III is the newest, most flexible cargo aircraft to enter the airlift force. The C-17 is capable of rapid strategic delivery of troops and all types of cargo to main operating bases or directly to forward bases in the deployment area. The aircraft is also able to perform tactical airlift and airdrop missions when required. The inherent flexibility and performance characteristics of the C-17 force improve the ability of the total airlift system to fulfill the worldwide air mobility requirements of the United States.
The ultimate measure of airlift effectiveness is the ability to rapidly project and sustain an effective combat force close to a potential battle area. Threats to U.S. interests have changed in recent years, and the size and weight of U.S.-mechanized firepower and equipment have grown in response to improved capabilities of potential adversaries. This trend has significantly increased air mobility requirements, particularly in the area of large or heavy outsize cargo. As a result, newer and more flexible airlift aircraft are needed to meet potential armed contingencies, peacekeeping or humanitarian missions worldwide. The C-17 was designed and built with this new world order in mind.
History: The C-17 made its maiden flight on Sept. 15, 1991, and the first production model was delivered to Charleston Air Force Base, SC, on June 14, 1993. The 17th Airlift Squadron, the first squadron of C-17s, was declared operationally ready Jan. 17, 1995. The Air Force is programmed to receive a total of 120 C-17s by the year 2005. The bulk of the inventory will be at Charleston AFB and McChord AFB, WA. C-17s will also be at Altus AFB, OK. and an Air National Guard unit at Jackson, MI.
The aircraft is operated by the Air Mobility Command with current operations at the 437th Airlift Wing and the 315th Airlift Wing (Air Force Reserve).
Description: The operational requirements impose demanding reliability and maintainability of the C-17 system. These requirements include an aircraft mission completion success probability of 92 percent, only 20 aircraft maintenance manhours per flying hour, and full and partial mission capable rates of 74.7 and 82.5 percent respectively. The Boeing warranty assures these figures will be met.
The C-17 measures approximately 174 feet (53 meters) long with a wingspan of 169 feet, 10 inches (51.76 meters). The aircraft is powered by four fully reversible Pratt & Whitney F117-PW-100 engines (the commercial version is currently used on the Boeing 757). Each engine is rated at 40,440 pounds of thrust. The thrust reversers direct the flow of air upward and forward to avoid ingestion of dust and debris. Maximum use has been made of off-the-shelf and commercial equipment, including Air Force-standardized avionics.
The aircraft is operated by a crew of three (pilot, copilot and loadmaster), reducing manpower requirement risk exposure, and long-term operating costs. Cargo is loaded onto the C-17 through a large aft door that accommodates military vehicles and palletized cargo. The C-17 can carry virtually all of the Army's air-transportable equipment.
Maximum payload capacity of the C-17 is 170,900 pounds (77,519 kilograms), and its maximum gross takeoff weight is 585,000 pounds (265,352 kilograms). With a payload of 160,000 pounds (72,575 kilograms) and an initial cruise altitude of 28,000 feet (8,534 meters), the C-17 has an unrefueled range of approximately 2,400 nautical miles. Its cruise speed is approximately 450 knots (.74 Mach). The C-17 is designed to airdrop both equipment and 102 paratroopers.
The design of the aircraft lets it operate through small, austere airfields. The C-17 can take off and land on runways as short as 3,000 feet (914 meters) and as narrow as 90 feet (27.4 meters) wide. Even on such narrow runways, the C-17 can turn around using a three-point star turn and its backing capability.
?General Characteristics, C-17 Globemaster III
Prime Contractor:
Boeing Company
Thrust:
40,440 pounds, each engine
Wingspan:
169 feet, 10 inches (to winglet tips) (51.76 meters)
Length:
174 feet (53 meters)
Height:
55 feet, 1 inch (16.79 meters)
Cargo Compartment:
Length - 88 feet (26.82 meters)
Width - 18 feet (5.48 meters)
Height - 12 feet 4 inches (3.76 meters)
Speed:
450 knots at 28,000 feet (8,534 meters) (Mach .74)
Service Ceiling:
45,000 feet at cruising speed (13,716 meters)
Range:
Global with in-flight refueling
Crew:
Three (two pilots and one loadmaster)
Maximum Peacetime Take-off Weight:
585,000 pounds (265,352
kilograms)
Load:
102 troops/paratroops; 48 litter and 54 ambulatory patients and attendants; 170,900 pounds (77,519 kilograms) of cargo (18 pallet positions)
Unit Cost:
$180 million (FY96 constant dollars)
Date Deployed:
June 1993
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David
Thu January 16, 2003 12:31am
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C-5 Galaxy
Function: With its tremendous payload capability, the gigantic C-5 Galaxy, an outsized-cargo transport, provides the Air Mobility Command intertheater airlift in support of United States national defense.
History: Lockheed-Georgia Co. delivered the first operational Galaxy to the 437th Airlift Wing, Charleston Air Force Base, SC. in June l970. C-5s are stationed now at Altus AFB, OK; Dover AFB, DE; Travis AFB, CA and Kelly AFB, TX. AMC transferred some C-5s to the Air Reserve starting with Kelly AFB, in 1985; followed by Stewart Air National Guard Base, N.Y. and Westover Air Reserve Base, MA.
In March 1989, the last of 50 C-5B aircraft were added to the 76 C-5A's in the Air Force's airlift force structure. The C-5B includes all C-5A improvements as well as more than 100 additional system modifications to improve reliability and maintainability. All 50 C-5B's are scheduled to remain in the active-duty force, shared by comparably sized and collocated Air Force Reserve associate units.
The C-5, C-17 Globemaster III and C-141 Starlifter are partners of AMC's strategic airlift concept. The aircraft carry fully equipped, combat-ready military units to any point in the world on short notice then provide field support required to help sustain the fighting force.
Description: The C-5 is one of the largest aircraft in the world. It can carry outsized cargo intercontinental ranges and can take off or land in relatively short distances. Ground crews can load and off load the C-5 simultaneously at the front and rear cargo openings since the nose and aft doors open the full width and height of the cargo compartment. It can also "kneel down" to facilitate loading directly from truck bed levels. Other features of the C-5 are:
1. High flotation landing gear with 28 wheels sharing the weight.
2. Full width drive-on ramps at each end for loading double rows of vehicles.
3. An automatic trouble-shooting system that records and analyzes information and detects malfunctions in more than 800 test points.
4. Able to take off fully loaded within 8,300 feet (2,530 meters) and land within 4,900 feet (1,493 meters).
The C-5 is similar in appearance to the smaller transport aircraft, the C-141 Starlifter, although the C-5 is much larger. Both aircraft have the distinctive high T-tail, 25-degree wing sweep and four turbofan engines mounted on pylons beneath the wings.
The Galaxy carries nearly all of the Army's combat equipment, including such heavy oversized items such as its 74-ton mobile scissors bridge, from the United States to any theater of combat on the globe.
Four TF-39 turbofan engines power the big C-5. They are pylon-mounted and rated at 41,000 pounds thrust each. They weigh 7,900 pounds (3,555 kilograms ) each and have an air intake diameter of more than 8.5 feet (2.6 meters). Each engine pod is nearly 27 feet long (8.2 meters).
The Galaxy has 12 internal wing tanks with a total capacity of 51,150 gallons (194,370 liters) of fuel -- enough to fill more than six regular size railroad tank cars. The fuel load weighs 332,500 pounds (150,820 kilograms) allowing the C-5 with a load of 204,904 pounds (92,207 kilograms) to fly 2,150 nautical miles, offload, and fly to a second base 500 nautical miles away from the original destination -- all without aerial refueling. With aerial refueling, crew endurance is the only limit to the aircraft's range.
General Characteristics, C-5 Galaxy
Contractor:
Lockheed Georgia Co.
Thrust:
41,000 pounds, each engine
Wingspan:
222.9 feet (67.93 meters)
Length:
247.1 feet (75.3 meters)
Height:
65.1 feet (19.84 meters) (at tail)
Cargo Compartment:
Height, - 13.5 feet (4.11 meters)
Width - 19 feet (5.79 meters)
Length - 143 feet, 9 inches (43.8 meters)
Takeoff/Landing Distances:
8,300 feet (2,530 meters) takeoff fully loaded
4,900 feet (1,493 meters) landing fully loaded
Pallet Positions:
36
Speed:
518 mph (.68 Mach)
Range:
6,320 nautical miles (empty)
Crew:
Seven (pilot, co-pilot, two flight engineers and three loadmasters)
Unit Cost:
C-5B, $184.2 million (FY96 constant dollars)
Date Deployed:
June 1970 (operational)
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David
Thu January 16, 2003 12:42am
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E-8C Joint Stars
Function: The E-8C Joint Surveillance Target Attack Radar System (Joint STARS) is an airborne battle management and command and control (C2) platform that conducts ground surveillance to develop an understanding of the enemy situation and to support attack operations and targeting that contributes to the delay, disruption and destruction of enemy forces. These functions support the primary mission of Joint STARS which is to provide dedicated support of ground commanders requirements.
History: Joint STARS evolved from Army and Air Force programs to develop, detect, locate and attack enemy armor at ranges beyond the forward area of troops. In 1982, the programs were merged and the Air Force became the lead agent. The contract was competitively awarded to Northrop Grumman (formerly Grumman Aerospace Corporation) in September 1985 for two E-8C development systems. These aircraft deployed in 1991 to participate in Desert Storm even though they were still in development. The joint program accurately tracked mobile Iraqi forces, including tanks and Scud missiles. Crews flew developmental aircraft on 49 combat sorties accumulating more than 500 combat hours and a 100 percent mission effectiveness rate.
Joint STARS developmental aircraft were also called to support the NATO peacekeeping mission, Operation Joint Endeavor, in December 1995. While flying in friendly air space, the test-bed E-8A and pre-production E-8C aircraft monitored ground movements according to the Dayton Peace Treaty agreements. Crews flew 95 consecutive operational sorties and more than 1,000 flight hours with a 98 percent mission effectiveness rate.
The 93rd Air Control Wing accepted its first aircraft, June 11, 1996, and Joint STARS returned to Operation Joint Endeavor in October 1996 when the 93rd ACW deployed. The designated 93rd Air Expeditionary Group (Provisional) monitored while NATO rotated troops through Bosnia-Herzegovina. The first production E-8C and a pre-production E-8C from Northrop Grumman Corp. flew 36 operational sorties and more than 470 flight hours with a 100 percent effectiveness rate. The wing declared initial operational capability Dec. 18, 1997.
The E-8C Joint STARS supports various taskings from the Combined Force Command Korea during the winter exercise cycle to the United Nations enforcing resolutions on Iraq.
A fourth production aircraft, designated backup aircraft inventory, was delivered to the Air Force Aug. 18, 1998.
Description: The E-8C is a modified Boeing 707/300 series commercial airframe extensively remanufactured and modified with the radar, communications, operations and control subsystems required to perform its operational mission. The most prominent external feature is the 40-foot (12 meters) long, canoe-shaped radome under the forward fuselage that houses the 24-foot (7.3 meters) long, side-looking phase array antenna.
The E-8C can respond quickly and effectively to support worldwide military contingency operations. It is a jam-resistant system capable of operating while experiencing heavy electronic countermeasures. The E-8C can fly a mission profile for more than eight hours without refueling. Its range and on-station time can be increased through inflight refueling.
The radar and computer subsystems on the E-8C can gather and display broad and detailed battlefield information. Data is collected as events occur. This includes position and tracking information on enemy and friendly ground forces. The information is relayed in near-real time to the Army's common ground stations via the secure jam-resistant surveillance and control data link and to other ground command, control, communications, computers and intelligence (C4I) nodes beyond line-of-sight via ultra high frequency satellite communications.
Radar operating modes include wide area surveillance, moving target indicator (MTI), sector search MTI and synthetic aperture radar. The antenna can be slued to either side of the aircraft to provide a 120 degree field of view covering nearly 19,305 square miles (50,000 square kilometers) and is capable of detecting targets at ranges from 164,049 to 820,248 feet (50 to 250 kilometers) from the aircraft. In addition to being able to detect, locate and track large numbers of ground vehicles the radar has some limited capability to detect helicopters, rotating antennas and low slow-moving fixed wing aircraft.
Other major E-8C subsystems are communications, operations and control. Eighteen operator workstations display computer-processed data in graphic and tabular format on video screens. Operators and technicians perform battle management, surveillance, weapons, intelligence, communications and maintenance functions.
In support of air-to-ground operations, the E-8C can provide the direct information needed to increase situation awareness with intelligence support and support attack and targeting operations to include attack aviation, naval surface fire, field artillery and friendly maneuver forces. It also provides information for air and land commanders to gain and maintain control of the battle-space and execute against enemy forces.
The E-8C can be used as a battle management and command and control asset to support the full spectrum of roles and missions from peacekeeping operations to a major theater war.
General Characteristics, E-8C Joint Stars
Contractor:
Northrop Grumman Corp.
Unit Cost:
Approximately $270 million
Power Plant:
Four Pratt and Whitney TF33-102Cs
Thrust:
19,200 pounds each engine
Length:
152 feet, 11 inches (46.6 meters)
Height:
42 feet, 6 inches (13 meters)
Wingspan:
145 feet, 9 inches (44.4 meters)
Maximum Take-off Weight:
331,000 pounds (150,142 kilograms)
Speed:
Optimum orbit speed 390 - 510 knots (Mach 0.52 - 0.65)
Ceiling:
42,000 feet (12,802 meters)
Crew:
Flight crew of four, plus mission crew of 15 Air Force and three Army specialists (crew size varies according to mission)
Range:
Eight hours (unrefueled)
Inventory:
Active force, 4 (14 to be delivered to Air Force by 2003)
ANG, 0
Reserve, 0
Date Deployed:
1996
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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 10:39am
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OH-58 Kiowa Warrior
History: The first Kiowa Warrior was delivered to the Army in May 1991. It is replacing selected AH-1 Cobra attack helicopters (those that function as scouts in air cavalry troops and light attack companies), and OH-58A and C Kiowas in air cavalry troops. Initially a Full Material Release decision was scheduled for Q4FY94. However, the aircraft has been able to attain only a "conditional" material release from the Army Materiel Command due to the autorotation issue described below and other safety concerns. The Kiowa Warrior was placed on the OSD oversight list in 1990 for DT, OT, and as a LFT candidate. There is no B-LRIP report or acquisition decision required for this system, however a LFT&E report will be submitted to Congress.
Since the last OA conducted in 1994, the Army has determined that modifications in mission and equipment over time have created a deficiency in the Kiowa Warrior autorotation capability. In general terms, the cumulative addition of new equipment caused the weight of the aircraft to increase dramatically, meaning that in the event of an engine failure or other similar occurrence, the aircraft lost some of its original autorotative capability, causing the aircraft to descend faster and experience an extended ground slide upon touchdown. As a result, the Army developed a two-phase Safety Enhancement Program (SEP) to reduce the safety risk to Kiowa Warrior aviators. The SEP consists of both training and material changes.
An improved version of the T-703 (R-3) engine will be installed which provides higher reliability and double the current overhaul interval, greater hot day power, and a Full Authority Digital Electronic Control (FADEC). The FADEC provides automatic rotor speed control, inflight restart, and performance recording, as well as more precise fuel metering capabilities. Additionally, an integrated body and head restraint system, a cockpit air bag system, and energy absorbing seats will be installed to enhance survivability in any crash situation.
Beginning in March 1997, a number of improvements were introduced into new production OH-58Ds resulting from Task Force XXI exercises that took place at Fort Irwin, CA in March 1997, to demonstrate the Army's concept of the "digital battlefield". These improvements include an improved Allison 250-C30R/3 650 shp engine equipped with an upgraded hot section to improve high-altitude/hot-day performance. The C30R/3 will be fitted with a full authority digital electronic control system that will replace the hydromechanical fuel control unit. The improved production Kiowa Warrior will have an integrated cockpit control and display system, master control processor with digital map and video crosslink, along with an improved data modem, secure radio communications, and a GPS embedded in the inertial navigation system. Additional improvements include an infrared jammer, infrared suppressor, radar warning receivers, and a laser warning detector to improve aircraft survivability.
Description: The OH-58D Kiowa Warrior is a two-place single engine armed reconnaissance helicopter. The OH-58D's highly accurate navigation system permits precise target location that can be handed-off to other engagement systems. The OH-58D has an infrared thermal imaging capability and can display night vision goggle flight reference symbology. It's laser designator/laser rangefinder can provide autonomous designation for laser-guided precision weapons. Air-to-Air Stinger (ATAS) issiles provide the Kiowa Warrior with protection against threat aircraft.
The primary mission of the Kiowa Warrior is armed reconnaissance in air cavalry troops and light attack companies. In addition, the Kiowa Warrior may be called upon to participate in the following missions or tasks:
- Joint Air Attack (JAAT) operations
- Air combat
- Limited attack operations
- Artillery target designation
The Kiowa Warrior is an armed version of the earlier OH-58D Kiowa Advanced Helicopter Improvement Program (AHIP) aircraft, which itself was a highly modified version of the OH-58A/C Kiowa. A hostile gunboat presence at night in the Persian Gulf in 1987 created the need for a small armed scout helicopter for interdiction. Close team work between the U.S. Armed Forces and Bell Helicopter Textron, Inc. developed the OH-58D Kiowa Warrior in less than 100 days, to counter this threat.
The Kiowa Warrior procurement plan is to acquire, through modification or retrofit of existing OH-58A and D aircraft, approximately 401 Kiowa Warriors. There are two concurrent programs which produce Kiowa Warriors: a program which modifies OH-58A aircraft, and a retrofit program that will eventually re-configure all 185 OH-58D Army Helicopter Improvement Program models. The Department of the Army has specified an acquisition objective of 507 Kiowa Warriors even though the current procurement authorization is for only 401 of them.
The Mast Mounted Sight (MMS) is one of the key elements of the Kiowa Warrior. Its unique day/night capabilities allow the crew to scan the battlefield with the ability to acquire, identify, and derive the coordinate locations of potential targets.
The U.S. Navy selected the Kiowa Warrior Mast Mounted Sight for use on their ships. They were so pleased with its performance that they entered into a program to update the technology in the existing platform. Their current Mast Mounted Sight II sight is smaller, lighter in weight, and half the cost of the US Army MMS. In addition, the optics have been upgraded through the application of technology insertion. The dollar cost avoidance in acquisition, operations and support cost, and spare components to support this system on the Kiowa Warrior is potentially significant.
The AIM-1 MLR (and DLR), a class IIIb infrared (IR) laser, provides a beam of light invisible to the naked eye. Its beam is said to be effective for aiming at ranges up to 3km. It is designed to operate in conjunction with standard night vision devices (its beam's impact point visible). The AIM-1 laser is boresighted to a point 2.8 inches vertically above the .50 Cal machine gun barrel bore center line of sight at a distance of 500 inches. This provides the proper offset for firing at a range of 1000 meters.
The principal difference between the Kiowa Warrior and its immediate OH-58D predecessor is a universal weapons pylon on both sides of the aircraft capable of accepting combinations of the semi-active laser Hellfire missile, the Air-to-Air Stinger (ATAS) missile, 2.75" Folding Fin Aerial Rocket (FFAR) pods, and a 0.50 caliber machine gun. In addition to these weapons, the Kiowa Warrior upgrade includes changes designed to provide improvements in air-to-air and air-to-ground communications, mission planning and management, available power, survivability, night flying, and reductions in crew workload through the use of on-board automation and cockpit integration.
The robust sensor capabilities of the KW in its mission as an armed reconnaissance aircraft, would be greatly enhanced by more effective communications within today?s digitized battlefield. By using the highly integrated avionics already on the aircraft, this capability can be added with only minor hardware and software changes. Video Image Crosslink (VIXL) provides the KW with the capability to send and receive still frame images over one of the FM radios. The VIXL consists of a circuit card installed in the IMCPU. In 1996 the KW Product Manager?s Office (PMO) developed four VIXL ground stations, which consist of an Aviation Mission Planning Station (AMPS) with a Tactical Communication Interface Modules (TCIM) and a SINCGARS radio. The ground stations will be used to transfer VIXL images on the ground.
The Improved Mast Mounted Sight System Processor (IMSP) will replace the current configuration MMS System Processor (MSP). The product improved aircraft will include a new high-speed digital signal processor that will provide improved tracking capabilities by split-screen in both TV and Thermal Imaging Sight (TIS) modes, low contrast target tracking, simultaneous multi-target tracking of up to six targets, moving target indicator, aided target recognition, and automatic reaquiring of targets lost due to obstruction. The operator video display will reflect real time TV zoom and still frame capabilities. The IMSP enhancements consist of the use of high-speed Gallium Arsenide based digital signal processor integrated circuits in the MMS signal processor. The Circuit Card Assembly count in the processor will be reduced from 30 to 16. This reduction and use of state-of-the-art component technology enhances reliability, maintainability, and supportability. The IMSP will provide for enhanced growth and will not require substantial aircraft hardware changes. An update to the aircraft software, however, is required to execute the enhanced functions of the upgraded processor. This provides for future insertion of neural net automatic target recognition, identification of friend or foe, passive ranging, and real-time image enhancements. Form and fit of the existing MMS system processor is maintained, and is backwards compatible with the MMS System Processor (MSP). As of July 1997, all aircraft delivered from the Bell Helicopter production lots will have the IMSP installed. All retrofit aircraft will be equipped MSPs. As the MSPs are removed through attrition, they are replaced with IMSPs.
The addition of weapons, improved cockpit integration, and better navigational capability have resulted in an aircraft that is much more capable than its predecessor. Furthermore, the potential enhancements to mission planning and management provided by the aviation mission planning system (AMPS) and data transfer system (DTS) were very apparent during the DSUFTP. All of these improvements were achieved without any noticeable impact on readiness, as indicated by the aircraft's operational availability.
General Characteristics, OH-58D Kiowa Warrior
Contractor:
Bell Helicopter Textron
Power Plant:
485 kilowatt (650 skip) Allison turbine
Survivability Equipment:
Infrared seeker jammer
Pulse and CW radar warning receivers
Laser warning detector
Inherent infrared suppression
Maximum Speed:
125 knots (232 kph)
Range:
268 nautical miles (497 kilometers), sea level
Weapons:
Two pylons can be armed with any of the following:
Two Hellfire missiles
Seven Hydra 70 rockets
Two air-to-air Stinger missiles
.50 caliber machine guns
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David
Thu January 16, 2003 10:39am
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SH-60 Seahawk
Function: A twin-engine, medium lift, utility or assault helicopter.
History: The UH-60 Black Hawk was fielded by the Army in 1979. The Navy received the SH- 60B Seahawk in 1983 and the SH-60F in 1988. The Air Force received the MH-60G Pave Hawk in 1982 while the Coast Guard received the HH-60J Jayhawk in 1992. The unit cost varies with the version. For example, the unit cost of the Army's UH-60L Black Hawk is $5.9 million while the unit cost of the Air Force MH-60G Pave Hawk is $10.2 million.
Description: The Seahawk is a twin-engine helicopter. It is used for anti-submarine warfare, search and rescue, drug interdiction, anti-ship warfare, cargo lift, and special operations. The Navy's SH-60B Seahawk is an airborne platform based aboard cruisers, destroyers, and frigates and deploys sonobouys (sonic detectors) and torpedoes in an anti-submarine role. They also extend the range of the ship's radar capabilities. The Navy's SH-60F is carrier-based. Some versions, such as the Air Force's MH-60 G Pave Hawk and the Coast Guard's HH-60J Jayhawk, are equipped with a rescue hoist with a 250 foot (75 meter) cable that has a 600 pound (270 kg) lift capability, and a retractable in-flight refueling probe. The Army's UH-60L Black Hawk can carry 11 soldiers or 2,600 pounds (1,170 kg) of cargo or sling load 9,000 pounds (4,050 kg) of cargo. Other versions are the UH-60 Black Hawk (Army); HH-60H (Navy); MH-60G Pave Hawk (Air Force); HH-60J Jayhawk (Coast Guard).
General Characteristics, SH-60 Seahawk
Contractors:
Sikorsky Aircraft Corporation (airframe); General Electric Company (engines); IBM Corporation (avionics components)
Power Plant:
Two General Electric T700-GE-700 or T700-GE-701C engines
Thrust:
Up to 1,940 shaft horsepower
Length:
64 feet 10 inches (19.6 meters)
Height:
Varies with the version; from 13 to 17 feet (3.9 to 5.1 meters)
Rotor Diameter:
53 feet 8 inches (16.4 meters)
Weight:
Varies; 21,000 to 23,000 pounds (9,450 to 10,350 kilograms)
Maximum Speed:
180 knots
Ceiling:
35,000 feet (10,668 meters)
Range:
Generally about 380 nautical miles (600 kilometers); range becomes unlimited with air refueling capability
Crew:
Usually three or four
Armament:
Usually two 7.62mm machine guns mounted in the windows
Can also be equipped with AGM-114 Hellfire or AGM-119 Penguin missiles, three Mk46 or Mk 50 torpedoes or additional .50-caliber machine guns mounted in the doors
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David
Thu January 16, 2003 10:55pm
Rating: 10
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M1A2
Function: Main battle tank (MBT).
Description: The M1A2 is externally very similar in appearance to the M1A1 with the exception of the redesigned Commander's Weapon Station (CWS) and the Commander's Independent Thermal Viewer (CITV.) The powered cupola has been replaced with a manually operated anti aircraft pintle mount, which cannot be fired while the commander is "buttoned up." In addition, the hatch has been enlarged and the vision blocks have been enlarged, improving visibility. The CITV is mounted in an armored rotating cylinder on the turret access plate forward of the Loader's station. The CITV is tall enough to limit the effectiveness of the loader's M240 machine gun through its forward arc of fire.
History: Approved for production in 1990, the M1A2 represents a technological improvement of the basic M1A1 design. Outwardly similar in appearance to the M1A1, the most notable exterior changes on the M1A2 are the redesigned Commander's Weapon Station (CWS) and the addition of a Commander's Independent Thermal Viewer) on the left side of the turret forward of the loader's hatch. Internally, however, the M1A2 has been radically redesigned to take advantage of newer technology. Most notable of these improvements is the addition of the Inter-Vehicle Information System (IVIS.) The IVIS system allows for the automatic and continual exchange of information between vehicles. By incorporating information provided by an on board Position/Navigation (POSNAV) system, unit commander's can track the location and progress of subordinate elements automatically, without tasking vehicle crews. In addition enemy positions can be identified, plotted and disseminated, while reports and artillery requests can be automatically formatted, transmitted, and processed. Lastly, map graphic control measures and operational orders can be rapidly distributed via the IVIS system. To ensure information security, all IVIS data transmissions are routed through the M1A2's SINCGARS radio system. Improving on the "hunter-killer" tank commander-gunner target hand off method pioneered on the German Leopard II, the M1A2 takes this a step further by providing the Tank Commander with an independent thermal sight. This CITV sight allows the commander to independently scan for targets in all weather conditions and through battlefield obscurants. In addition to IVIS and the CITV, the M1A2 incorporates a number of additional electronic upgrades. Power distribution throughout the tank has been improved, relying on multiple bus paths so that in the event one conduit is damaged, power may still be delivered to a component via an alternate path. The driver's instrument display has been upgraded to a more detailed digital display and the Gunner's Primary Sight has been stabilized in two axes for increased accuracy.
Approved for implementation in 1995, the M1A2 SEP (System Enhancement Package) is a technology upgrade and standardization program, whereby the Army's fleet of M1s and M1A2s will all be brought to a common standard. Most notable among the modifications will be the introduction of a standard under armor auxiliary power unit and the addition a crew compartment air conditioning and cooling unit. Other modifications within the vehicle will include upgrades to the IVIS system (color display, full size keyboard, digital mapping and graphics generation capability, and voice recognition capabilities), upgrades to the Gunner's Primary Sight assembly, and improvement in the tank's intercom and radio communications systems. Production of the M1A2 was halted after the initial run of 627 vehicles. As part of the fleet upgrade program, 547 of the Army's current inventory of M1s are being upgraded to M1A2 SEP standards, which will require the complete remanufacturing of the turret, while the current fleet of M1A2s will undergo a retrofit to bring them up to SEP standards.
The M1A2 is currently available for export, albeit with a different armor composition and communications package. Saudi Arabia has purchased 312 M1A2s, equipped with British Jaguar radios, and Kuwait has purchased 218 similarly equipped M1A2s.
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David
Thu January 16, 2003 10:59pm
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M1 Abrams
Function: Main battle tank (MBT).
Description: The M1 has a very angular appearance, reflecting the modular nature of its armor components, with the turret mounted centrally on the hull. The M1 has a crew of four. The driver sits centered in the hull and forward of the turret, while the loader, gunner and tank commander occupy the turret, with the loader situated to the left of the main gun and the gunner and tank commander sitting in tandem on the right side. The driver's hatch has three periscope vision blocks which provide for forward vision. The center vision block may be removed and replaced with an AN/TVS-2 low-light periscope. The engine is mounted in the rear of the vehicle with the exhaust coming out from a louvered grill centrally mounted in the rear of the hull. The M1 utilizes a torsion bar suspension with seven pairs of cast aluminum road wheels and two return rollers. The drive sprocket is to the rear, an idler compensation wheel is located forward, and there is a gap between the first and second pair of road wheels. The M1 has armored skirts running the full length of the track. M1 track is made up of vulcanized rubber blocks (M156 variety) or removable rubber pads (M158.) The turret is also angular in appearance, with the main gun mounted in an exposed mantlet in the center of the turret face. The M68 rifled cannon is equipped with a metal thermal shroud, a bore gas evacuator located two-thirds of the way down on the barrel, and is equipped with a Muzzle Reference System collimator on the muzzle itself. The M240 coaxial (COAX) machine gun is located to the right of the main gun, with the flash tube extending through the main gun mantlet. The Gunner's Auxiliary Sight (GAS) aperture is located below the COAX flash tube on the right side of the main gun. The M1 has two turret access hatched, mounted side by side, in the middle of the turret roof. The loader's hatch, located on the left side, is equipped with a pintle mounted M240 7.62mm machine gun. The hatch itself is equipped with a single vision periscope on a rotating base. When not in use, the drivers AN/TVS-2 sight may be used in the loader's hatch vision block. The tank commander's hatch is ringed by vision periscopes and the Commander's Weapon Station cupola is equipped with an M2 HB caliber .50 machine gun. The M2 may be fired while the commander is "buttoned up" but the commander must be exposed to reload the weapon. The CWS can be reconfigured to fire an M240 as a replacement weapon. The Gunner's Primary Sight (GPS) is located forward of the commander's cupola. The GPS is housed in an armored box with hinged doors shielding the optics when not in use. The GPS is divided into two halves; a clear glass window for normal daylight viewing and an IR transparent Germanium coated window for the thermal imaging sight. The Laser Range Finder (LRF) is fired through the daylight window. There are individual sponson boxes located on either side of the turret for equipment storage. These boxes are approximately three feet (1m) long and are bracketed by a three-rail cargo rack which runs the length of the turret side. The smoke grenade launchers are located on either side of the turret, forward of the turret sponson boxes. There are mounting points for two radio antennae, one on either side of the turret rear, and the cross wind sensor is mounted upright in the center of the turret rear. A cargo bustle rack is mounted on the rear of the turret and runs the length of the turret rear (in early production M1s this rack was omitted and a fabric cargo net mounted in it's place. An Auxiliary Power Unit (APU) may be mounted in the turret bustle rack or on the rear of the hull.
History: Fielded in February 1980, the M1 General Abrams main battle tank revolutionized armored warfare. Incorporating an advanced shoot-on-the-move fire control system, a thermal imaging sight, a 1500 horsepower gas turbine engine and an advanced armor design similar to the Chobham armor developed in England, the M1 was the most lethal armored vehicle in the world. Conceived in 1971 as a replacement for the aging M60 tank, which was itself an extension of the 1050s era M 47/48 program, the M1 was going to be of a completely new design, establishing a new family of American main battle tanks. Providing the Abrams with a true shoot on the move capability, the fire control system automatically corrects for range, turret slew (motion) rate, crosswind, and tank axial tilt (cant). In addition, the gunner manually enters ammunition or weapon type, air and ammunition temperatures, barometric pressure, and gun tube wear, while range is instantly calculated by a Nd:YAG (Neodymium doped Yttrium Aluminum Garnet) near infrared laser rangefinder. Lastly, the gunner can compensate for gun tube deformation (caused either by heat generated from firing the cannon or atmospheric changes) through the use of a muzzle reference system, which allows for a rapid realignment of the cannon and the gunner's primary sight.
The Chobham armor built into the M1 represents a veritable leap in armor technology. Composed of layers of metal, ceramics, and spaces, this new armor is far superior to RHA (Rolled Homogeneous Armor) in defeating kinetic and chemical energy weapons. To increase crew safety and survivability, all of the M1's ammunition is stored in armored compartments which are designed vent dangerous gasses and fragments away from the crew in the event of an ammunition explosion. The crew and engine compartments are equipped with an automatic fire suppression system, utilizing numerous fire detection sensors and pressurized Halon gas, which can react to and suppress a compartment fire in less than 250 ms.
To survive on the NBC (Nuclear, Biological, Chemical) battlefield the M1 is also equipped with both an over pressurization and air sterilization system which will protect the crew from these hazards and allow them to continue combat operations without having to wear protective overgarments and masks while buttoned up inside the vehicle.
Lastly, the M1 was the first land combat vehicle to utilize a gas turbine multi fuel engine, which offers a higher power to weight ratio than any other contemporary tank power plant and gives the Abrams unparalleled tactical mobility and cross country speed. The M1 retains the M68 105mm rifled cannon used on the M60 series tanks, which was originally based on the British M7 105mm cannon design, and is capable of firing both rifled and fin stabilized ammunition. In addition, the M1 is equipped with two M240 7.62mm machine guns; one mounted coaxially with the main gun and fired by gunner, and the other mounted at the loader's station. The Commanders Weapon Station (CWS) is equipped with an M2 heavy barrel Caliber .50 machine gun. The CWS can be reconfigured to fire the M240 machine gun as a substitute.) The M1 is equipped with a pair of M250 red phosphorus smoke grenade launchers and is capable of generating smoke by injecting diesel fuel into the engine exhaust.
Originally designated the XM1, the first production model was designated the M1, of which 2,374 were built between 1982 and 1985. In 1984 the M1IP (Improved Product) was introduced, which was outwardly identical to the M1, but which incorporated a number of internal automotive, electronic and armor improvements. Production of the M1IP was halted at 84 tanks in 1986, when the Lima and Detroit tank plants were reconfigured to produce the up-gunned 120mm M1A1. In 1992 a study was conducted evaluating the feasibility of upgrading the Army's fleet of M1s to M1A2 SEP (Standard Equipment Package) standard and low rate production was approved in 1994. Since then the Army had agreed to convert 547 M1s to the M1A2 SEP standard.
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David
Sat January 18, 2003 12:16pm
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Soldiers of the U.S. Army
Soldiers of the U.S. Army's 82nd Airborne wait to load into a U.S. Air Force C-141 Starlifter at Pope Air Force Base, N.C., on Jan. 20, 1999. The soldiers are participating in Large Package Week, a joint exercise involving Air Force aircraft operating from Pope and soldiers of the U.S. Army's 82nd Airborne, at Fort Bragg, N.C.
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