The Black Knight, is an unmanned light tank being developed by British BAE systems. In terms of size and appearance it looks like a dwarf M1 Abrams. Its main armament is a 30 mm gun and it also has a 7.62 mm coaxial machine gun. It is powered by a 300 hp Caterpillar diesel engine capable of allowing the vehicle to achieving a maximum speed of 77 km/h (48 mph).
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1. “Black Knight (vehicle).” Wikipedia: The Free Encyclopedia. Wikimedia Foundation, Inc., 20 Sep 2013. Web. 5 Oct 2013. <http://en.wikipedia.org/wiki/Black_Knight_(vehicle)>.