Command post carrier, Post carrier
FIRE SUPPORT VEHICLES
A one man electric drive turret was installed by FMC. This turret was armed with an M242 25mm gun and a coaxial M240 7.62mm machine gun. The M242 was an externally powered weapon known as the Bushmaster or Chain Gun (A trademark of the McDonnell Douglas Helicopter Company).
It fired single shots or automatically at rates of 100, 200, or 500 shots per minute. Combat loaded, this turret weighed 3,100 pounds without the gunner. A total of 165 ready rounds of25mm ammunition were provided.
A two man turret armed with the same 25mm gun and 7.62mm coaxial machine gun also was under test. This turret was essentially the same as on the Bradley fighting vehicle without the launcher for the TOW missile, although the latter was offered as an option.
The turret was assembled from 5083 and 7039 aluminum alloy plate with steel applique armor. Mounted on the M113A2 armored personnel carrier, the vehicle weight, without the crew, was 26,840 pounds. The weapon was provided with 300 25mmready rounds and an additional 600 rounds were stowed.
The Emerson Electric Company developed a mount for the M242 cannon utilizing the M27 mount previously used with the 20mm gun on the M114A1E1 tracked carrier. This mount, referred to as the TAT 251, could be installed on the M113 series of armored personnel carriers. A later turret installation of the Bushmaster by Emerson Electric was referred to as the TAT 252. It also could be mounted on the M113 series.
The ASP-30 automatic, self-powered, cannon produced by the McDonnell Douglas Helicopter Company was installed for test as a replacement for the commander's .50 caliber machine gun on the M113 series vehicles. This 30mm weapon weighed 115 pounds and had a muzzle velocity of 2,700 feet per second. It could fire single shots or automatically at a rate of 400 to 450 rounds per minute.
The CVAST (Combat Vehicle Armament Systems Technolgy) turret developed for the Bradley fighting vehicle was installed experimentally on the M113. This was a cleft turret mounting a 35mm Ares automatic gun and it is described in the section on the Bradley.
COMMAND POST, CONTROL, AND COMMUNICATION VEHICLES
In September 1959, CONARC transmitted the military characteristics of four command post vehicles to the Chief of Research and Development. They consisted of a command post trailer, a light tracked command post carrier, a light wheeled command post carrier, and a medium wheeled command post carrier.
The Chief of Research and Development approved only the light tracked command post carrier rejecting the wheeled carriers and the trailer. Subsequently, CONARC reaffirmed the requirement for the command post trailer and the medium wheeled command post carrier, but they are outside the scope of this history. OTCM 37465, dated 7 July 1960, recorded the approved characteristics of a light, tracked, command post carrier.
Since such a vehicle was urgently required by the U.S. Army in Europe, CONARC recommended its immediate type classification without service tests and requested that the four prototype vehicles under construction be delivered at the earliest possible date. On 14 December 1961, OTCM 37932 type classified the light tracked command post carrier XM577 for limited production. It was intended to replace the M59 armored personnel carriers modified in the field as command post vehicles.
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