Aerotechnik WGM.21

WGM.21
Role Quadrotor helicopter
National origin Germany
Manufacturer Aerotechnik
Introduction 1969

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.[1]

Variants

WGM.21
Single seat prototype
WGM.22
Two seat enclosed version

Aircraft on display

Specifications (WGM.21)

Data from Air Progress

General characteristics

  • Crew: 1
  • Empty weight: 90 kg (198 lb)
  • Gross weight: 335 kg (739 lb)
  • Powerplant: 1 × BMW 700 Automotive conversion, 40 kW (54 hp)
  • Main rotor area: 21.3 m2 (229 sq ft)

Performance

  • Maximum speed: 125 km/h (78 mph, 67 kn)
  • Cruise speed: 115 km/h (71 mph, 62 kn)
  • Service ceiling: 2,100 m (6,900 ft)

References

Wikimedia Commons has media related to Aerotechnik WGM.21.
  1. ^ Air Progress: 21. December 1971.{{cite journal}}: CS1 maint: untitled periodical (link)
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