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The Saab 32 Lansen (English: Lance) was a two-seat, transonic military aircraft designed and manufactured by SAAB from 1955 to 1960 for the Swedish Air Force (''Flygvapnet''). Three principal variants of the Lansen were built for attack (A 32A), fighter (J 32B), and reconnaissance (S 32C). During its long operational life, the Saab 32 also served as an electronic warfare platform and target-tug aircraft. ==Development== In 1948, the Saab Company was approached by the Swedish Government with a request to investigate the development of a turbojet-powered strike aircraft to replace a series of 1940s vintage attack, reconnaissance and night-fighter aircraft then in the Flygvapnet: the Saab B 18/S 18, J 21R/A 21R and J 30 (de Havilland Mosquito). Out of several differing design studies performed, including a twin-engine aircraft intended to be powered by a pair of de Havilland Ghost turbojet engines, Saab settled on a single-engine design, which was initially designated the ''P1150''.〔Gunston and Gilchrist 1993, p. 134.〕 The requirements laid out by the Swedish Air Force for the ''P1150'' were demanding: it had to be able to attack anywhere along Sweden's 2 ,000 km (1 ,245 miles) of coastline within one hour of launch from a central location. It had to be capable of being launched in any weather conditions and at day or night.〔 The ''P1150'' would break new grounds for the Swedish Air Force, being their first two-seat jet aircraft, and the first to carry a built-in search radar.〔Wagner 2009, p. 53.〕 Saab had initially envisaged powering the ''P1150'' with the indigenously produced STAL Dovern engine, however the timescale and technical difficulties of the Dovern led to this engine being replaced by the license-built Rolls-Royce Avon Series 100 turbojet engine instead.〔 The single Avon engine provided the Saab A 32A with a thrust to weight ratio of about 0.3, and enabled the aircraft to be roughly 10,000lb heavier than the twin engine Saab 18 it replaced; the later-produced J 32B interceptor and S 32C reconnaissance variants received the upgraded and significantly more powerful RM6A Avon engine instead.〔Gunston and Gilchrist 1993, pp. 134-136.〕 On 3 November 1952, the first Saab 32 prototype conducted its first flight.〔 The design of the prototypes had initially featured both Fowler flaps and a leading edge slot; this slot was discarded as unnecessary after trials with the prototypes and never appeared on subsequent production aircraft. Triangular fences were added near the wing roots during flight testing in order to improve airflow when the aircraft was being flown at a high angle of attack.〔 A small batch of P1150 prototypes completed design and evaluation trials with series production of the newly designated ''Saab 32 Lansen'' beginning in 1953. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Saab 32 Lansen」の詳細全文を読む スポンサード リンク
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