Musculair 1 and Musculair 2 are two human-powered aircraft designed and built by German academic and engineer Günther Rochelt.
Rochelt designed Musculair 1 and completed building it in 1984. His son, Holger, won a Kremer prize in the same year for his flight over a 1500m (4,900feet) triangular course, improving the record to 4 minutes and 25 seconds. In the same year, he set a world speed record at 35.7km/h, receiving a second Kremer prize. Later that year, Holger and his sister Katrin, at that time still a child, became the first passengers in a human-powered aircraft.
Günther designed Musculair 2, and Holger slimmed down to just to reduce the total mass of craft and human, leading to him setting a new Fédération Aéronautique Internationale world record for a human-powered aircraft at on 2 October 1985.[1] The record, which still stands as of 2023, was set over a circuit at the Sonderlandeplatz Oberschleißheim airfield, near Munich.[1]
Today, Musculair I is on display at the main Deutsches Museum, Munich. Musculair 2 is on display at the specialist Deutsches Museum Flugwerft Schleissheim in Oberschleißheim.