After a series of Association of the U.S. Army (AUSA) annual conventions where the main battle tank was conspicuous by its absence, a General Dynamics Land Systems M1 tank is back on the show floor this year, albeit missing two features — its turret and its turbine engine. The vehicle shown by GD is a turretless propulsion technology demonstrator for a diesel-powered M1, and the manufacturer says that dynamometer tests performed by the Army in August and September showed a 49% ...


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