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J-XX〔Coniglio 2006, P.44〕 J-X,〔〔Chang 2002〕 and XXJ〔 are names applied by Western intelligence agencies to describe programs by the People's Republic of China to develop one or more fifth-generation fighter aircraft.〔〔 General He Weirong, Commander of the People's Liberation Air Force (PLAAF), stated that China had several such programs underway and that an undesignated fifth-generation fighter developed jointly by Chengdu Aerospace Corporation and Shenyang Aerospace Corporation would be in service by 2018.〔Govindasamy, 2009〕 ==History== The PLAAF unveiled the program in late 2002. A December 2002 ''Jane's Defence Weekly'' reported that Shenyang Aerospace Corporation had been selected to head research and development of the new fighter,〔Chang 2002〕 which was also stated in the ''New Scientist'' the same week.〔Knight 2002〕 Also, a 2006 article in ''Military Technology'' referred to three designs; two by Shenyang Aerospace Corporation and one by Chengdu Aerospace Corporation.〔Coniglio 2006, P.44〕 According to ''Jane's'', development of the subsystems, including an engine with thrust vectoring capability, and weapon suite for the next generation fighter had been under development. A photograph of a wind tunnel model published with the article showed a twin-engine aircraft with twin vertical tail fins. The aircraft would carry its weapons internally like the F-22 Raptor. ''New Scientist'' called attention to the angular, faceted features of the design, comparing them to the F-117 Nighthawk. The article in ''Military Technology'' featured a picture of a completely different design, speculatively called J-14 and said to be a Shenyang project, with the designations J-12 and J-13 being applied to competing designs by Shenyang and Chengdu respectively. Since 2009, comments on the Chinese internet have indicated to a merging of the two efforts, to be named J-14. Chengdu was rumored to be responsible for the airframe, while Shenyang would be responsible for the engines and avionics. In November 2009, General He Weirong, the Deputy Commander of the People's Liberation Army Air Force confirmed research and development of the 5th generation stealth fighter, and gave a possible in-service date of 2017 to 2019.〔〔''The forthcoming Chinese fourth-generation fighter''〕 A U.S. Defense Intelligence Agency official commenting on General He's statements indicated the DIA believes a first flight of the J-XX "will occur in the next few years", but that operational deployment of the fighter "in meaningful numbers" will not take place within the decade.〔Gertz 2009〕 U.S. Air Force and U.S. intelligence officials have stated their belief that China likely has the resources, data and technology required to build a 5th generation fighter, although doubts remain in areas such as systems engineering, integration, and production processes. The U.S. Department of Defense expects China to have a handful of 5th generation fighters in service between 2020 and 2025, according to statements made by U.S. Secretary of Defense Robert M. Gates in July 2009.〔Gates 2009〕 However, a year later, in May 2010, United States intelligence stated that Chinese 5th generation fighter jets will be expected around 2018.〔 In 2011, Gates changed his position to state that China may have 50 stealth fighters by 2020 and a couple of hundred by 2025.〔Pennington, Matthew. ("Gates: Despite early Stealth jet test, China's fighter fleet will lag US for years to come." ) ''The Canadian Press'', 17 February 2011.〕 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「J-XX」の詳細全文を読む スポンサード リンク
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