Whirlwind HAR Mk 1 for Royal Navy is powered by Pratt and Whitney R 1340-40 Wasp; for Royal Air Force, Whirlwind HAR Mk 2 has similar equipment apart from radio installations; it can be used for " paratrooping"; on civil side, S-55 is delivered with bare cabin and conversion kits for various roles required; powered by R 1340 Wasp engine; later models will be fitted with Cyclone; max sea level speed 95 knots. See also Engineering Index 1953 p 491.
Westland Sikorsky S-55 helicopter
Aeroplane
Aeroplane ; 86 , n 2240
1954
7 pages
Aufsatz (Zeitschrift)
Englisch
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