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The Bell 47 is a two-bladed, single engine, light helicopter manufactured by Bell Helicopter. Based on the third Model 30 prototype, Bell's first helicopter designed by Arthur M. Young, the Bell 47 became the first helicopter certified for civilian use on 8 March 1946.〔("Bell Helicopters" ). Helicopter History Site.〕〔("Biography of ARTHUR MIDDLETON YOUNG" ).〕 More than 5,600 Bell 47 aircraft were produced, including those produced under license by Agusta in Italy, Kawasaki Heavy Industries in Japan, and Westland Aircraft in the United Kingdom. The Bell 47J Ranger is a modified version with a fully enclosed cabin and fuselage. ==Design and development== Early models varied in appearance, with open cockpits or sheet metal cabins, fabric covered or open structures, some with four-wheel landing gear. Later model D and Korean War H-13D and E types settled on a more utilitarian style. The most common model, the 47G introduced in 1953, can be recognized by the full bubble canopy, exposed welded-tube tail boom, saddle fuel tanks and skid landing gear. The later three-seat 47H had an enclosed cabin with full cowling and monocoque tail boom. It was an attempt to market a "luxury" version of the basic 47G. Relatively few were produced. Engines were Franklin or Lycoming vertically mounted piston engines of 200 to 305 HP (150 to 230 kW). Seating varied from two (early 47s and the later G-5A) to four (the J and KH-4). As of 2005, many are still in use as trainers and in agriculture. In April 2011 there were 1068 registered with the FAA〔(FAA )〕 and 15 in the UK.〔(CAA )〕 Bell 47s were produced in Japan by a Bell and Kawasaki venture; this led to the Kawasaki KH-4 variant, a four-seat version of the Model 47 with a cabin similar to the Bell 47J. It differed from the "J" in having a standard uncovered tailboom and fuel tanks like the G series. It was sold throughout Asia, and some were used in Australia. In February 2010, the Bell 47 type certificates were transferred to ''Scott's Helicopter Services''. The sister company that was formed, Scott's - Bell 47, is in the process of starting production of a turboshaft powered version of the Bell 47, the 47GT-6, using a Rolls-Royce RR300 engine and with composite rotor blades, with deliveries planned from 2016. 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「Bell 47」の詳細全文を読む スポンサード リンク
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