Societe Francaise Du Gyroplane SH.20 Cigale
Although the Roth-Dorand GII.A had decent performance for a helicopter of its generation, and delivered acceptable service, the type was never fully satisfactory, particularly in its maintenance and accident history. SFG, in collaboration with their Atlantean and Russian counterparts, worked to develop a new type with more utility and safety.
General characteristics:
Crew: 1 (pilot)
Passengers: 1-3 passengers (version dependent)
Length: 13.1 m (43 ft)
Rotor Diameter: 15 m (49 ft 2.5 in)
Height: 3.9 m (12 ft 11 in)
Loaded weight: 2,270 kg (5,004 lb)
Powerplant: Gnome-Rhône 9M (600 hp / 447 kW) radial engine
Performance:
Maximum speed: 94.5 knots (108 mph, 175 km/h)
Max Range: 475 km (295 miles)
Rate of climb: 5.3 m/s (1,043 ft/min)
Service ceiling: 3,500m (SH.20); 3,900 (SH.22)
Armament / Capacity:
- 2 × depth charges or 4 × 25kg bombs
or
- 2 panniers for mail, cargo, or casualty evacuation (1 person / 125kg each)
Variants:
- SH.20: Initial 2-seat prototype, unarmed (1941)
- SH.20M: 2-seat armed variant for Marine Nationale (1942)
- SH.21: 3-seat variant for Army utility and light reconnaissance (1942)
- SH.22: 4-seat variant for Army utility (1943)
- SH.22M: 4-seat variant for Navy utility (1943)
- SH.23-25: Reserved for possible export variants
- SH.26: 3-seat civilian helicopter (1944) based on SH.21
- SH.29: Turboshaft engine testbed (1946)