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FFVS 22
The FFVS J 22 was a single-engine fighter aircraft developed for the Swedish Air Force during World War II.
==Development==
At the onset of World War II, the Swedish Air Force (''Flygvapnet'') was equipped with largely obsolete Gloster Gladiator (J 8) biplane fighters. To augment this, Sweden ordered 120 Seversky P-35 (J 9) and 144 P-66 Vanguard (J 10) aircraft from the United States. However, on 18 June 1940 after the German occupation of Norway, the United States declared an embargo against exporting weapons to any nation other than Great Britain. As the result, ''Flygvapnet'' suddenly faced a shortage of modern fighters. Several other foreign alternatives were considered: the Finnish VL Myrsky and Soviet Polikarpov I-16 were unsatisfactory, and while the Mitsubishi A6M Zero was available, delivery from Japan was impractical. A batch of Fiat CR.42 Falco (J 11) biplanes and Reggiane Re.2000 ''Falco'' (J 20) were eventually purchased but this was clearly an interim solution.
With ''Flygvapnet'' facing a serious shortage of aircraft and Saab running at full capacity building its single-engine Saab 17 and twin-engined Saab 18 bombers, a new firm and factory were established specifically for the new fighter — ''Kungliga Flygförvaltningens Flygverkstad i Stockholm'' ("Royal Air Administration Aircraft Factory in Stockholm", ''FFVS'') under Bo Lundberg. The aircraft, designated J 22, was a monoplane with a plywood-covered steel airframe. Wing and fuselage layout were conventional, with the narrow-track main landing gear retracting rearward entirely within the fuselage, somewhat similar to the 1935 Focke-Wulf Fw 159 parasol-wing monoplane fighter design. Power came from a Swedish copy of the Pratt & Whitney R-1830 Twin Wasp, manufactured without a license at the time, though license fees were paid later (a symbolic US$1).
The J 22 first flew on 20 September 1942 from Bromma airport, where the factory was located. It entered service in October 1943, at the F9 air wing at Gothenburg, with the last of the 198 aircraft delivered in April 1946. Sub-assemblies for the J 22 were made by over 500 different contractors.
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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