Bendix Helicopter Model J

In 1944, Vincent Bendix (of washing machine fame) established Bendix Helicopters (later renamed Helicopters Inc.). The Bendix designer, Martin Jensen, devised the Bendix Model J single-seater which used a system of coaxial rotors and was driven by a 450hp Pratt & Whitney R-985 piston engine. This was followed by the Model K.

Gyrodyne acquired rights to the five-seat Helicopters Inc. (Bendix) Model J and developed this as the Gyrodyne GCA-2.