Jane's Encyclopedia of Aviation
Cierva W.9 (UK)
Two-seat experimental helicopter first flown in 1947. Special design features included jet thrust used for torque compensation instead of a conventional tail rotor.
- Jane's Encyclopedia of Aviation
Фотографии
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Air Pictorial 1995-04
The Cierva W.9 as tested by Alan Marsh, who was CO of No 529 Sqn, RAF, flying Cierva C.30As and Avro Rotas at Henley-on-Thames until its disbandment in October 1945.
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Air Pictorial 1995-04
The Cierva W.9 at Thames Ditton in 1944. The members of the development and construction team posing in front of the protoype are not identified, but presumably include C G Pullin, J S Shapiro, Ken Watson and perhaps Ray Pullin.
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Jane's All the World Aircraft 1947 / All the world's aeroplanes
Регистрационный номер: PX203 [4] The Cierva W.9 Experimental Helicopter (200 h.p. D.H. Gipsy-Six Series III engine).
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Jane's All the World Aircraft 1980 / Encyclopedia of Aviation - Aircraft A-Z - v2
Регистрационный номер: PX203 [4] Cierva W.9.
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Aeroplane Monthly 1990-06 / J.Yoxall - H.A.Marsh /They who dared first/ (2)
Регистрационный номер: PX203 [4] Using jet thrust to compensate for torque, W-9 PX203 originally flew without a tail fin. Marsh crashed the W-9 while trying to fly it from the starboard seat but the helicopter had proved that the jet thrust anti-torque system was not as effective as a tail rotor.
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Aeroplane Monthly 1990-06 / J.Yoxall - H.A.Marsh /They who dared first/ (2)
Регистрационный номер: PX203 [4] Alan Marsh, photographed with the Weir W-9 in 1947.
- Фотографии