C.25
Role Single-seat autogyro
Manufacturer Comper Aircraft Company Ltd
Designer Nicholas Comper
First flight 1933
Number built 1

The Cierva C.25 was a British 1930s single-seat autogiro produced by Comper Aircraft Company Ltd of Hooton Park, Cheshire.

Design and development

The sole C.25, based on the airframe of the Comper Swift with modified tailfins and short low-mounted wings, received the civil registration G-ABTO. It was the first autogiro to use the Pobjoy Cataract 7-cylinder geared radial engine.[1][2]

Specifications

Data from Cierva C.25 Blueprint[3]

General characteristics

  • Crew: 1
  • Length: 17 ft 8.5 in (5.398 m) fuselage only
  • Wingspan: 13 ft 6 in (4.11 m) wings only
  • Powerplant: 1 × Pobjoy R 7-cylinder geared radial piton engine, 85 hp (63 kW)
  • Main rotor diameter: 27 ft (8.2 m)
  • Main rotor area: 572.63 sq ft (53.199 m2)
  • Propellers: 2-bladed fixed-pitch propeller, 6 ft 6 in (1.98 m) diameter

Performance

References

  1. ↑ Stingray. "Comper-Cierva C.25 / G.31/1 - Stingray's List of Rotorcraft". sites.google.com. Retrieved 5 April 2020.
  2. ↑ Riding, Richard (June 1989). "Cierva C.25 - British pre-war lightplanes No 6". Aeroplane Monthly: 374–376.
  3. ↑ Young, Bill. "Cierva C.25 Blueprint". Blueprints.com. Retrieved 5 April 2020.
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