Breguet-Dorand Gyroplane Laboratoire

Its designer, Frenchman Louis Breguet, had already experimented with rotorcraft in 1909; however, he chose to concentrate on airplanes until the end of the 1920s.

In 1929 he announced a set of patents which addressed the flight stabilization of rotorcraft, and, in 1931, Breguet created the Syndicat d'Etudes de Gyroplane (French for "Syndicate for Gyroplane Studies"), together with Rene Dorand as technical director.

Power was provided by a 240 HP Hispano radial engine which propelled the two contra-rotating, coaxial rotors.

[1] Within a short time the pilot, Maurice Claisse, was setting records with the aircraft : The Gyroplane Laboratoire and its accomplishments were soon overshadowed by the German Fw 61.

Bréguet and Dorand continued to conduct further experiments to improve the design until the aircraft experienced a hard landing in June 1939.

Model of the "Gyroplane Laboratoire" in scale of 1 : 11 as shown in the Hubschraubermuseum Bückeburg (Helicopter Museum)