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Supermarine Spitfire (Griffon-powered variants)
The Rolls-Royce Griffon engine was designed in answer to Royal Naval specifications for an engine capable of generating good power at low altitudes. The concepts for adapting the Spitfire to take the new engine had begun as far back as October 1939; Joseph Smith felt that "The good big 'un will eventually beat the good little 'un." and Ernest Hives of Rolls-Royce thought that the Griffon would be "a second power string for the Spitfire."〔McKinstry 2007, pp. 257–258.〕 The first of the Griffon-engined Spitfires flew on 27 November 1941.
Although the Griffon-engined Spitfires were never produced in the large numbers of the Merlin-engined variants, they were an important part of the Spitfire family and, in their later versions, kept the Spitfire at the forefront of piston-engined fighter development.
This article describes the Griffon-powered Spitfire variants.
==Wing types==
The majority of Spitfires, from the Mk VIII on, used three basic wing types — the C through to the E types. Unless otherwise noted all Griffon-engined Spitfire variants used the strengthened Dunlop AH10019 "four spoke" pattern mainwheels. With the increasing use of hard-surfaced runways in the post-war years many Spitfires were either manufactured, or retro-fitted with, larger mainwheels which were of a "three spoke" pattern. These were used on modified undercarriage legs which had reduced "toe-in' for the axles, which reduced tyre scrub.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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