Aerotechnik WGM.21

The Aerotechnik WGM.21 is a quadrotor helicopter that was developed in the 1970s.

Design and development
The WGM.21 is an open cockpit quadrotor. Four rotors are mounted at the end of a four tubular supports arranged into a X shape. Cyclic and collective controls are mixed into a single control yoke. Pitch is controlled by foot pedals. A second model, the WGM.22, was developed with side-by-side configuration seating and an enclosed cockpit.

Variants

 * WGM.21
 * Single seat prototype


 * WGM.22
 * Two seat enclosed version

Aircraft on display

 * Hubschraubermuseum Bückeburg - prototype