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High altitude fighter. The design of the Welkin was based on the configuration of the Whirlwind, with high-aspect ratio, long-span wings and Merlin engines. The engines and propellors proved to be unreliable, and the wing was too thick, resulting in a low limiting Mach number. Because the high-flying bomber treat never materialized, the 67 Welkins built were kept in storage. Later Westland built a prototype of a two-seat nightfighter version, but the development of the advanced cabin pressurisation system was the only real benefit from this project.
| General characteristics Welkin F Mk. I | |||
| Primary function | Fighter | ||
| Power plant | Two R.R. Merlin 61 | ||
| Wingspan | 70 ft | 21.34 m | |
| Length | 41.5 ft | 12.65 m | |
| Height | 15.3 ft | 4.65 m | |
| Wingarea | 460 sq ft | 42.73 sq m | |
| Weight | empty | 14,375 lb | 6,520 kg |
| max. | 19,775 lb | 8,970 kg | |
| Speed | 387 mph | 623 km/h | |
| Ceiling | 44,000 ft | 13,410 m | |
| Range | 1,491 mi | 2,400 km | |
| Armament | 4x 20mm cannon | ||
| Crew | One | ||
| Date deployed | 1943 | ||
| Number built | 67 | ||
Jirka Wagner
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