Engines, Multi-Purpose

The M998 High Mobility Multipurpose Wheeled Vehicle (HMMWV or Humvee) is a military 4WD motor vehicle created by AM General. more...

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It has largely supplanted the roles formerly served by the M151 1/4 ton MUTT, the M561 "Gama Goat", their M718A1 and M792 ambulance versions, the CUCV, and other light trucks with the United States military, as well as being used by a number of other countries and organizations. Humvees were originally also referred to as Hummers, though that term was later reserved for a civilian SUV based on the Humvee.

Features

The HMMWV uses portal axles, allowing an axially delivered central tire inflation system.

There are at least 17 variants of the HMMWV in service with the United States armed forces. HMMWV serve as cargo/troop carriers, automatic weapons platforms, ambulances (four litter patients or eight ambulatory patients), M220 TOW missile carriers, M119 howitzer prime movers, M-1097 Avenger Pedestal Mounted Stinger platforms, MRQ-12 direct air support vehicles, S250 shelter carriers, and in other roles. It is capable of fording 2.5 ft (76 cm) normally, or 5 ft (1.5 m) with the deep-water fording kits installed.

Optional equipment includes a winch (maximum load capacity 6000 lb. (2700 kg)), and supplemental armor. The M1025 and M1043/M1044 armament carriers provide mounting and firing capabilities for the MK19 grenade launcher, the M2 heavy machine gun, the M240G/B machine gun and M249 SAW. The newly introduced M1114 "up-armored" HMMWV also features a similar weapons mount. In addition, some M1114 and M1116 up-armored and M1117 Armored Security Vehicle models feature a CROWS (common remotely operated weapon station), which allows the gunner to operate from inside the vehicle.

History

In the 1970s, the United States Army concluded that the militarized civilian trucks in use no longer satisfied their requirements. In 1977, Lamborghini developed the Cheetah model to attempt to meet Army contract specifications. In 1979, the Army drafted final specifications for a High Mobility Multipurpose Wheeled Vehicle, or HMMWV. In July of that year, AM General (a subsidiary of American Motors Corporation) began preliminary design work, and less than a year later, the first prototype, the M998, was in testing.

In June 1981, the Army awarded AM General a contract for development of several more prototype vehicles to be delivered to the U.S. government for another series of tests, and the company was later awarded the initial production contract for 55,000 HMMWVs to be delivered in 1985. HMMWVs first saw combat in Operation Just Cause, the US invasion of Panama in 1989.

Read more at Wikipedia.org