Binder Flugmotoren- und Flugzeugbau GmbH, located in Ostheim vor der Rhön, Germany, specializes in the development and manufacture of high-performance retractable propulsion systems (self-launch motors) for sailplanes, as well as composite propellers and service/upgrade solutions for motor gliders. The company combines lightweight, emissions-optimized engines with tailored propellers, offering integrated solutions for sailplane autonomy.