M3 "half-track" half tracked armored personnel carrier
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Name:Half track armored personnel carrier Half-track Armoured Personnel Carrier Development: Autocar Company of Ardmore, US Diamond T Motor Company Diamond T Motor Car Compa Manufacturer: Ardmore, Autocar Company of Ardmore, US Diamond T Motor Company Diamond T Motor Car Compa Status: Complete Production Plan Equipment: Argentina, Cameroon, Colombia, Dominica, Greece, Israel, Japan, Mauritania, Mexico, Morocco, Niger, Paraguay, Senegal, Taiwan Province of China, Thailand, Togo and Zaire. Overview In 1937, the United States adopted the M2 non-armored half tracked vehicle chassis and the M3A1 reconnaissance vehicle body to make the T7 vehicle. After the T7 vehicle was shaped, it was called the M2 half tracked vehicle. In 1939, the M3 half tracked vehicle was developed. The body of the car is slightly longer than that of the M2, so that it has greater bearing capacity. In 1940, Ardmore Motors, Diamond T Motors, and White Motors signed a contract for the production of a half-tracked vehicle with the Army. These vehicles use White's 160AX gasoline engine, Spicer's transmission and the Timken-Deroit axle. In order to further expand production, UW Harvester also produced the M9 and M5 half-track vehicles, which use many of the company's auto parts, but their performance is comparable to that of the M2 and M3 parts. By 1944, the United States had continuously produced 42,000 semi-track-type vehicles. In the Second World War, a large number of allied forces were equipped. In the 1967 and 1973 wars, Israel also made heavy use of half-track vehicles. The power of its current half-track vehicles has been converted into General Motors (GMC) 6V-53 diesel engines (128kW/2800r/min). Because of the shortcomings of half-track vehicles, the United States Army has replaced it with a full-crawler armored personnel carrier at the end of the 1940s. Structural features The half tracked vehicle adopts a traditional overall layout with the engine at the front, three occupants centered and the crew room behind. In order to facilitate the vehicle to cross the trench, a round roller is installed in front of the car, and some vehicles use a winch with a pulling force of 44.5 kN instead. All types of half-track vehicles use standard automotive components. The only difference is the engine. M2 and M3 and their variants use White's 160AX water-cooled gasoline engine, while M5 and M9 and their variants use the IWC's water-cooled gasoline engine. The front of the powerhouse is armored shutters that protect the radiator and can be operated in the cab. Transmissions include mechanical 4-speed gearboxes, 2-speed gearboxes, cardan shafts, full-floating axle shafts, and automotive front and rear axles. The steering of the vehicle is steered with a steering wheel. With foot brake and hand brake. The body is semi-open type and is made of rolled steel plates that are connected by screws. In front of the occupant's compartment is a windshield made of 12.7mm thick unbroken glass that can be removed during combat and the armored front window with two observation holes is lowered. The doors on both sides can be opened forward. The upper part of the side door has a viewing hole protected by a sliding cover. To expand the field of vision, the upper half of the door can be opened outward. There is a door to the right in the back of the passenger compartment. If necessary, a bow bracket and a canvas cover can be placed on the top of the passenger compartment. The front of the loading room is equipped with a machine gun holder, but different types of vehicles are equipped. The M2 and M2A1, M9 and M9A1 vehicles have two 12.7mm machine guns, M3 and M5 only have one 7.62mm machine gun, and the M3A1 and M5A1 each have one 7.62mm and 12.7mm machine gun. The front track of the half-track vehicle adopts a multi-layered reinforced tire with built-in ballistic packing. Each of the two tracks has a driving wheel and an inducer with tensioning device. There are 8 small weight wheels. The driving force of the driving wheel is directly transmitted by the half shafts. Track suspension is a spiral spring linkage. Use non-slip plastic track. All kinds of half-track vehicles are capable of floating without water, and there are no three defense devices. Performance data Model M2A1 10 crew members Full weight 8890kg Net weight 6940kg Unit power 10.6kW/t Car length Roller 5.962m Winch 6.137m Car width 2.221m Vehicle height 2.692m The distance between the floor and the ground is 0.233m Track distance Before 1.637m After 1.722m Track width 305mm Reaching distance 1.187m Highway maximum speed 64km/h Fuel Reserve 227L The maximum length of the road is 280km The wading depth is 0.812m Grade 60% Climbing vertical wall height 0.304m engine Production company White Model 160AX Type 6 cylinder inline gasoline engine Power/speed 94kW/2800r/min transmission Production company Spicer Type manual Forward/Reverse 4/1 Transmission 2 speed Clutch Type Single Dry Suspension type Front leaf spring Rear scroll spring Tire specifications 8.25×20 Brake type hydraulic Weapons caliber / type / quantity 12.7mm / machine gun / 1 7.62mm/machine gun/1 Ammunition Base 12.7mm bullets 700 hair 7.62mm bullets 7750 hair Armor type / thickness / material Body front homogeneous / 7mm/steel plate Side Homogeneous / 7mm / Steel Plate Front upper homogenizer / 12.7mm / steel plate Top (Engine) Homogeneous / 7mm / Steel Plate Rear homogeneity / 7mm / steel plate Electrical system voltage 12V Number of batteries / voltage 1 / 12V Model evolution and variants American half-track vehicle family ----M2A1 M2 ---------------- M4 Type 81mm Self-propelled Mortar - M4A1 ----M13 type multi-purpose gun ---- M21 Type 81mm Self-propelled Mortar M3 ---------------- M3A1—M3A2 ----M16 type multi-purpose gun ---- M15 Multi-purpose Gun - M15A1 ----M5A1—M5A2 M5 ---------------- M14 type multi-purpose gun ----M17 type multi-purpose gun M9 ----------------M9A1