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SNCAO 200
The SNCAO 200 (sometimes written CAO.200) was a prototype French single seat fighter aircraft of the 1930s. It was a single engined monoplane intended to compete with the Dewoitine D.520, but was unsuccessful, only a single example being built.
==Design and development==
In 1937, the French Air Ministry issued an official specification for a single-engined fighter to follow-on from and replace the Morane-Saulnier M.S.406. The new fighter was to be powered by a single Hispano-Suiza 12Y-51, rated at 1,100 hp (821 kW).〔Green 1960, p. 45.〕 Designs to meet this specification were produced by Dewoitine (the Dewoitine D.520), Morane-Saulnier (the Morane-Saulnier M.S.450), the Arsenal de l'Aéronautique (the VG-33) and SNCAO.〔Green 1960, p. 20.〕
SNACO, formed in 1936 when the factories of Loire-Nieuport and Breguet were nationalised, based its design on the Loire-Nieuport 161 fighter design which had been rejected in favour of the M.S.406. The new fighter, the SNCAO 200 was a low-winged monoplane of all-metal construction, with stressed-skin wings, a forward fuselage of steel tubes covered in duralumin skinning, and a duralumin monocoque rear fuselage. It was fitted with leading edge slats, which were linked to trailing edge flaps.〔Green 1960, p. 37.〕
A mock-up of the SNCAO was exhibited at the 1938 Paris Air Show.〔''Flight'' 1 December 1938, p. 489.〕 When the prototype was completed in January 1939, the planned Hispano-Suiza 12Y-51 engine was not yet available, and it was fitted with an 860 hp (640 kW) Hispano-Suiza 12Y-31 engine to make its first flight on 31 January 1939.〔 With this engine, the SNCAO was underpowered, and by the time the prototype was passed to the authorities for official testing in August 1939, the Dewoitine D.520 had already been ordered into large-scale production.〔Green 1960, pp. 37–38.〕 Despite this, several sources claim that a batch of 12 aircraft to be powered by 12Y-51 engines were ordered.〔〔Breffort and Jouneau 2004, pp. 80–81.〕
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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