Aerotechnik WGM.21
The Aerotechnik WGM.21 is a quadrotor helicopter that was developed in the 1970s.
| WGM.21 | |
|---|---|
 | |
| Role | Quadrotor helicopter |
| National origin | Germany |
| Manufacturer | Aerotechnik |
| Introduction | 1969 |
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
- Hubschraubermuseum Bückeburg - prototype
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
- "none". Air Progress: 21. December 1971.
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