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The Supermarine Aircraft Spitfire is an American homebuilt aircraft produced in kit form by Supermarine Aircraft. [1] [2] [3] A replica of the famous British Supermarine Spitfire World War II fighter, it was originally produced to 75% scale. Subsequent models have increased the scale of the fuselage and added a second seat.
US parts kit regulation is distinct from that of other countries, where a firearm's pressure bearing parts such as bolts, barrels, and gas pistons are the commonly regulated components. In the United States a serialized receiver can be purchased or manufactured from a state of incompleteness to create a firearm. [ 3 ]
Spitfire LF Mk Vb of 316 (Polish) "Warszawski" Squadron. This Spitfire has the "cropped" Merlin 45 series engine and the "clipped" wings. The British Supermarine Spitfire was one of the most popular fighter aircraft of the Second World War. The basic airframe proved to be extremely adaptable, capable of taking far more powerful engines and far ...
[32] [nb 4] Although the Merlin II engine of Spitfire Is running on 87 octane fuel and at 6.6 lbs boost, had a power rating of 1,030 hp (768 kW), the Air Ministry was by early 1937, well aware of the advantages of higher octane fuel on boost pressure particularly at lower altitudes and had committed to standardising on 100 octane fuel.
Spitfire LF Mk IX MH434 of Duxford's Old Flying Machine Company.. The British Supermarine Spitfire was facing several challenges by mid-1942. The debut of the formidable Focke-Wulf Fw 190 in late 1941 had caused problems for RAF fighter squadrons flying the latest Spitfire Mk Vb. [2]
The Rolls-Royce Griffon engine was designed in answer to Royal Navy specifications for an engine capable of generating good power at low altitudes. 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."
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The matter of a seaborne Spitfire was raised again in November 1939 when the Air Ministry allowed a Commander Ermen to fly a Spitfire I. After his first flight in R6718 , Ermen soon learned that Joseph Smith , Chief Designer at Supermarine, had been instructed to fit an "A-frame" arrestor hook on a Spitfire and that this had flown on 16 October ...