Cierva C.25

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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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