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AAVP7A1 Amphibious Wheele

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David


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Registered: August 2001
Posts: 46,796
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Function: Amphibious Assault.







History: The AAV7A1 is the newest Assault Amphibian in a series that started with the Roebling ALLIGATOR. The Alligator was developed over a period of 7 years, starting in 1932. The first "Gators" were a disappointment, in that the water speed was only 2.5 mph. The land speed was 25 mph. Through design changes, and by using larger engines, the water speed of the Alligator was increased to 8.6 mph by 1939. In 1940, Roebling built a new model which was designated the CROCODILE. The Crocodile had a land speed of 25 mph and a water speed of 9.4 mph. The LVT-1 was a direct copy of the Crocodile, except that it was fabricated from sheet steel instead of aluminum. The LVT-1 was in production from 1941 to 1943. Being heavier, the land speed of the LVT-1 was 18 mph and the water speed was 7 mph. A 6-cylinder, 146 hp Hercules engine was used for power. The LVT-1 was propelled by two endless chains fitted with cleats, both in the water and on land. The first LVT-1's were used as logistic support vehicles only. They were not armored and carried no armament, however, this soon changed. At the Battle of Tarawa, bolted on armor plate was used and the vehicles were equipped with one to four 30 cal. machine guns. The second generation of LVT's was the LVT-2. This vehicle was developed in 1941 and was in production from 1942 to 1945. The LVT-2 was the basic design for a series of vehicles used during WW II. This family of vehicles included the: LVTA1, LVTA2, LVT4, LVTA4, and LVTA5. A few of the LVTA5s were modified in 1949 and continued in service until the mid 1950s. These vehicles were powered with 7-cylinder radial aircraft engines built by Continental Motors. These engines developed 220hp, their service life was very short. Major overhaul was scheduled for 100 hours, however few ever lasted that long. The transmission was a 5 speed, manual shift SPICER that incorporated a manually operated steer differential. This transmission had been developed for the M-3 light tank. As a result, the transmission was too narrow for the LVT. This problem was overcome by using four final drives. The internal finals were bolted to the transmission / differential gear case and supported by two mounting yokes. The external final drives were bolted to the hull and powered the drive sprockets. This generation of LVTs was used through the Okinawa campaign in 1945.







Description: The AAVP7A1 is an armored assault amphibious full-tracked landing vehicle. The vehicle carries troops in water operations from ship to shore, through rough water and surf zone. It also carries troops to inland objectives after ashore.







General Characteristics, AAVP7A1





Manufacturer:

FMC Corporation







Date First Prototype:

1979







Date First Production Vehicle:

1983







Crew:

Three







Weight:

Unloaded: 46,314 pounds (with EAAK, less crew, fuel, OEM and ammo)



Combat equipped: 50,758 pounds (EAAK, crew, fuel, OEM and ammo)



Troop loaded: 56,743 pounds (combat equipped with troops)



Cargo loaded: 60,758 pounds (combat equipped with cargo)



Mine clearance kit: 61,158 pounds (combat equipped with MKl MOD 0 MCS)







Load Capacity:

21 Combat Equipped Troops (at 285 pounds) or 10,000 pounds of cargo







Fuel Capacity:

171 gallons







Cruising Range:

Land: 20 to 30 mph

Water: 6 mph













Cruising Speed:

Land: 20 to 30 mph

Water: 6 mph







Maximum Speed Forward:

Land: 45 mph

Water: 8.2 mph







Maximum Speed Reverse:

Land: 12 mph

Water: 4.5 mph







Engine:

Make: Cummins



Model: VT400



Type: 4 cycle, 8 cylinder, 90' Vee, water cooled, turbocharged



Fuel: Multifuel







Cargo Compartment:

Length: 13.5 feet

Width: 6.0 feet

Height: 5.5 feet

Volume: 445.5 cubic feet



Capacity: 21 combat equipped troops







Armament and Ammunition:

HBM2 .50 caliber machine gun

MK 19 MOD3 40 mm machine gun







Unit Replacement Cost:

$2.2-2.5 million
· Date: Thu January 16, 2003 · Views: 2101
· Filesize: 7.7kb · Dimensions: 178 x 150 ·
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Keywords: AAVP7A1 Amphibious Wheele


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