J. Walter Christie (far right, pointing) demonstrates the tank element of his M-1932 flying tank design to the members of a military commission in the USA in 1932. The wingless and turretless prototype proved to be fast on paved surfaces using its untracked wheels, but the concept of a flying tank was not deemed worthy of further exploration in the USA.
Christie’s original concept for a three-man flying tank, later developed into the M-1932. The biplane wings were of thick aerofoil section, with the cables for the flying controls and driveshaft for the four-bladed propeller passing through a central strut housing. The M-1932 never flew and Christie moved on to other tank-related projects.