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The Sikorsky S-92 is a four-bladed twin-engine medium-lift helicopter built by Sikorsky Aircraft for the civil and military helicopter market. The S-92 was developed from the Sikorsky S-70 helicopter and has similar parts such as flight control and rotor systems. The H-92 Superhawk is a military version of the S-92 in the utility transport role, capable of carrying 22 troops. The H-92 can also be configured for specific missions, including search and rescue and executive transportation. The CH-148 Cyclone is a shipboard maritime helicopter variant currently under development for the Canadian Forces. ==Development== After the 1973 oil crisis, major oil and gas companies began exploration further offshore, thus creating a need for aircraft such as the S-92 with sufficient capability.〔Kay, Marcia Hillary. "(40 Years Retrospective: It's Been a Wild Ride )" ''Rotor & Wing'', August 1, 2007. Accessed: 8 June 2014. (Archived ) on 8 June 2014.〕 Sikorsky Aircraft first displayed a S-92 mockup of the planned helicopter in 1992. The S-92 was to be offered for sale beginning in 1993, but due to a decline in the international market for helicopters, this was delayed. In 1995 Sikorsky formed Team S-92 with international partners and launched the helicopter program at the Paris Airshow that year.〔Frawley, Gerald. "Sikorsky S-92 Helibus". ''The International Directory of Civil Aircraft, 2003/2004''. Aerospace Publications, 2003. ISBN 1-875671-58-7.〕 Sikorsky developed the S-92 to compete with civil aircraft such as the Aerospatiale/Eurocopter Super Puma.〔Donald, David, ed. "Sikorsky S-92". ''The Complete Encyclopedia of World Aircraft''. Barnes & Nobel Books, 1997. ISBN 0-7607-0592-5.〕 The helicopter uses a new airframe with dynamic components based on the S-70/H-60 components. The S-92 took its maiden flight on December 23, 1998 at the Sikorsky Development Flight Center, West Palm Beach, Florida.〔〔Frawley, Gerald. "Sikorsky S-92". ''The International Directory of Military Aircraft, 2002/2003''. Aerospace Publications, 2002. ISBN 1-875671-55-2.〕 In July 2000, Sikorsky announced design changes to the S-92. The fuselage of prototype #3 was lengthened by 16 in (40 cm) aft of the cockpit, the tail pylon was shortened by 41 in (1.04 m), and the horizontal stabilizer was repositioned from the left side opposite the tail rotor to the right side at the base of the tail pylon. The modifications to the tail solved a pitch stability issue discovered during flight testing, and were reported to allow the aircraft to meet a key requirement of the Nordic Standard Helicopter Program (NSHP) for shipboard stowage. The lengthening of the fuselage and shortening of the tail pylon shifted the aircraft center of gravity (CG) forward, permitting a more level attitude in flight. The longer fuselage allowed for an additional row of three seats, as well as a larger passenger door option for Search and Rescue (SAR) customers. Sikorsky incorporated the changes into the following two prototypes as the production standard configuration.〔Lewis, Jeff. ("All aboard the S-92" ). ''Flight International''. 25–31 July 2000. Accessed on 7 November 2008.〕 Some reports suggested that the modifications were actually to resolve damage from structural design flaws.〔Lake, Jon, editor. ("Type Focus: Sikorsky S-92" ). ''RotorHub''. Shepard Publishing. October–November 2007. p. 19. Accessed: 8 November 2008. The article suggests that reasons for the design modifications on the S-92 were the result of cracking on the tail pylon and stabilator based on reports from unnamed industry sources.〕 The S-92 is built and customized in Sikorsky's Coatesville, Pennsylvania facility. The S-92 received Federal Aviation Administration (FAA) part 29 type certification on December 19, 2002,〔Searles, Robert A. ("A Truly New-Generation Helicopter" ). Aviation Week's Sporlight, June 2003.〕 and received International European Aviation Safety Agency/Joint Aviation Authorities (EASA/JAA) certification on June 8, 2004.〔("Sikorsky S-92 Achieves International Type Certification" ). Sikorsky, June 8, 2004.〕 In June 2009, Sikorsky Aircraft entered into a joint-venture with Tata Advanced Systems Limited (TASL) for S-92 manufacturing in India for export and domestic markets. A US$200 million manufacturing plant will be operational in Hyderabad by 2010. Initially, TASL will supply the complete cabins for the S-92 to Sikorsky.〔("Tata-Sikorsky Deal Ends HAL Aerospace Monopoly" ). ''Defense News'', June 3, 2009.〕〔("Tata Advanced Systems and Sikorsky to Manufacture Helicopter Cabins in India" ). machinist.in, June 16, 2009.〕 The first cabin was delivered in November 2010.〔(【引用サイトリンク】title=Business briefs )〕 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「Sikorsky S-92」の詳細全文を読む スポンサード リンク
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