The Stemme S10 is a self-launching sailplane produced by Stemme AG in Strausberg (Germany) since the 1980s. The engine is mounted amidships and it features an unusual folding propeller which is stowed inside the aircraft's nose-cone when the engine is not in use.
Stemme S10
MWP-Research Airplane Stemme S10 VT across the volcano Lanin
Retractable propeller of the Stemme S10: When the engine, which is behind the cockpit, is shut down the prop folds and the nose cone slides back, leaving a clean nose.
A motor glider is a fixed-wing aircraft that can be flown with or without engine power. The FAI Gliding Commission Sporting Code definition is: a fixed-wing aerodyne equipped with a means of propulsion (MoP), capable of sustained soaring flight without thrust from the means of propulsion.
DG-808B 18m self-launching
Carden-Baynes Auxiliary engine
Powerplant from a Schleicher ASH 26E self-launching motor glider, mounted on a test stand for maintenance at Alexander Schleicher in Poppenhausen, Germany. Counter-clockwise from top left: propeller hub, mast with belt guide, radiator, Wankel engine, muffler shroud.
Grob G 109B touring motor glider, with fibre-reinforced plastic construction.
