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MBT-70
The MBT-70 (German: ''KPz 70'') was a 1960s German-U.S. joint project to develop a new main battle tank, which was to be equipped with a number of advanced features. It utilized a newly developed hydropneumatic "kneeling" suspension and housed the entire crew in the large turret. The MBT-70 was armed with a 152mm XM150 gun/launcher, which could use conventional ammunition and the Shillelagh missile for long range combat.
By 1969 the project was well over budget and Germany withdrew from the effort, developing a new main battle tank on their own instead (the Leopard 2). In the US the development continued for a short time, until in 1971 when Congress cancelled the program. The MBT-70 is the failed predecessor of the Leopard 2 and the M1 Abrams, the current main battle tanks of both countries.
==History==
In the early 1960s the German Leopard 1 and the US M60 were the newest main battle tanks in their respective country's service. While designed to counter the T-54/55 tanks, it became clear that the next generation of Soviet tanks would have increased firepower and protection, and both designs would be placed at a disadvantage by the new smoothbore gun in the T-62. An upgrade project for the Leopard was planned,〔 but it appeared this model would not be enough of an advance to be worthwhile.
To solve the problems in the tank forces, Germany and the United States had a memorandum of understanding to develop a common new tank for both armies. However, this may have been one of the worst things to happen to the project, as both teams started "pulling" the design in their own directions. Arguments arose over almost every part of the design: the gun, the engine, even whether or not the design would use metric or SAE measurements. This last dispute was eventually "settled" by using both systems, thereby increasing costs considerably.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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