https://en.wikipedia.org/wiki/Cierva_C.30
General characteristics
- Crew: 1
- Capacity: 1 passenger
- Length: 19 ft 8 in (6 m)
- Height: 11 ft 1 in (3.38 m)
- Empty weight: 1,220 lb (553 kg)
- Gross weight: 1,600 lb (726 kg)
- Powerplant: 1 × Armstrong Siddeley Genet Major IA 7-cyl. air-cooled radial piston engine, 140 hp (100 kW)
- Main rotor diameter: 37 ft 0 in (11.28 m)
- Main rotor area: 1,100 sq ft (100 m2)
Performance
- Maximum speed: 96 kn; 177 km/h (110 mph)
- Cruise speed: 83 kn; 153 km/h (95 mph)
- Range: 248 nmi; 459 km (285 mi)
- Rate of climb: 700 ft/min (3.6 m/s)