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:''Not to be confused with the'' F.3500 Sparviero, ''a later, uncompleted twin engined aircraft from the same designer.'' The Pasotti F.9 Sparviero ((英語:Sparrowhawk)) was a four-seat, low-wing touring aircraft, built in Italy in the 1950s. Designed by Stelio Frati, it was a single-engine version of his earlier twin-engined Airone. Only one was built. ==Design and development== The F.9 Sparviero was a single-engined version of the earlier, twin-engined F.6 Airone, both Stelio Frati designs. The two aircraft shared many constructional details and had almost the same dimensions and weights, though the Sparviero's nose mounted engine extended the fuselage. Engine layout apart, the two were very similar in appearance; they also both failed to reach production and only one Airone and one Sparviero were built.〔〔 The Sparviero had an all wood, low mounted cantilever wing of isosceles trapezoidal plan, built around a single spar and covered with stressed plywood skin, with differential ailerons and trailing edge flaps. The fuselage was a ply skinned wooden monocoque, built in two sections which bolted together just aft of the wings. The forward part held the cabin, which seated four in two pairs, with access via two wide doors over the wings. The roof line of the cabin continued aft into that of the rear fuselage.〔 The Sparviero was initially powered by a 250 hp (187 kW) Hirth inverted V-8 air-cooled engine, though it was the intention to replace this with a 260 hp (194 kW) Lycoming horizontally opposed engine in production models〔 and the prototype received one later.〔 Fuel was fed from three tanks, two in the wings and one in the fuselage. The tail unit was conventional, with the tailplane just above the fuselage. The latter tapered in height rearwards and the fin merged into it with a dorsal fillet. The empennage construction was similar to that of the wing, except that the control surfaces were fabric covered. The tricycle undercarriage was retractable and fitted with hydraulic brakes.〔 The Sparviero first flew on 27 July 1956,〔 piloted by Vico Rocaspina who was responsible for all the early flight programme.〔 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「Pasotti F.9 Sparviero」の詳細全文を読む スポンサード リンク
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