| s-55 > westland whirlwind | 1952 | During 1950, the Royal Navy had received 10 rescue (HAR.21) and 15 anti-submarine (HAS.22) versions of the ... 
The main driver for the S-55 evaluation was the frustration of the Admiralty over the difficulties experienced in development and sea tests by th ...
Westland had acquired some familiarity with the US built Sikorsky S-55. In November 1950, it negotiated a licence from Sikorsky to build and deve ...
The first British Whirlwind flew at Yeovil on 15 Aug 1953 for the Royal Navy with a 3 man crew and three more versions of the Series 1, two for t ...
The Whirlwind HAR.5 (a prototype development of the naval HAR.3) was the first British engined version, to be powered by the 14 cylinder, 882hp, ...
Westland judged that turbine engines were powerful and reliable enough to incorporate the Gnome into the HAR.9, which needed a redesigned no ...
A number of versions were built for civil commercial passenger and freight users, both for the UK and export market. More than 400 Whirlwind ...
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