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The M56 Coyote is a jeep based on the Humvee created especifically to generate smoke.


The Generator, Smoke, Mechanical: Motorized Dual Purpose Unit, M56, also known as the Coyote, was a

M56 Coyote, note the smoke generator in the back of the truck

motorized system mounted on an M1113 Expanded Capacity High Mobility Multipurpose Wheeled Vehicle (HMMWV). The M1113 ECV HMMWV had a gross vehicle weight of 11,500 pounds, which allowed the maneuver element to fully load the M56 and still pull a trailer. The turbocharged 190 horsepower engine provided excellent mobility. The smoke generating system provided 90 minutes of visual and 30 minutes of infrared obscuration without resupply. The visual and infrared screens could deny enemy reconnaissance, surveillance, and target acquisition (RISTA) devices information of troop strength, position, and movement and deny visual and infrared weapon systems kills on friendly combat units. A crew of 2 was required to operate the M56 Coyote.

The M56 Coyote enhanced the division and corps commander's ability to deny the enemy information, to protect his forces, and to dominate the maneuver battle. Six M56 Coyotes formed the smoke platoon. The M56 would operate in support of light and airborne maneuver units by disseminating smoke on the move and from stationary positions to defeat enemy sensors and smart munitions such as tank thermal sights, guided munitions, directed energy weapons, and other systems operating in the visual through far-infrared regions of the electromagnetic spectrum.

The M56 Coyote was Type Classified in September 1994. A production contract was awarded to Robotic Systems Technology in March 1995 for 267 systems. First Article and Production Verification testing were successfully completed in September 1996. Eight M56 Coyotes were fielded to the Chemical School at Fort. McClellan, Alabama in May 1997.

Fieldings to FORSCOM began in July 1998 with delivery of 18 systems to the 82nd Airborne Division at Fort Bragg, North Carolina. A follow-on 5-year multiyear contract would be awarded in FY01. A materiel change program to add a millimeter wave module would also begin in FY01. That program was intended to provide extended spectral coverage to defeat threat weapon systems operating in the millimeter regions of the electromagnetic spectrum. A Drivers Vision Enhancer (DVE) was also to be developed to provide the additional capability to drive at night and under obscured conditions.

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