2011年1月6日木曜日

殲20 タキシーテスト

殲20は高速タキシーテストをしたようだ。
 「漢和情報センター」は、航空産業筋の話として、中国軍の次世代
ステルス戦闘機「J(殲)20」の試作機がすでに完成していると明らかにした。
 高度なセンサー能力やレーダーに探知されにくいステルス性を備えた
米英などが共同開発中のF35が代表的だが、J20はF22と似た外観で、国産の
エンジンを搭載しているという。

現在の航空機はハードウェアとソフトウェアの組合せにより、飛行性能も
安全性も確保している。
航空機には、FMSやFCC、データリンク等の電子装備品が必要のはずだが、
これも複製品なのだろうか。
米国防長官の中国軍事予測よりも5年以上速い開発となる。
しかし、殲11Bは、露戦闘機を複製製造したが、中国国内でさえ、飛行
性能や安全性を確保できず、受取拒否をした経緯もあり、実践配備まで
詳細は不明。
もしかして株価操作か。

中国空軍 複製戦闘機の受取拒否


China's J-20 Stealth Fighter


China Air Force: 4th generation stealth fighter J-14(F-20)


網上流傳殲20戰機照片


---中国ステルス機、開発状況は不明=米---
2011/01/05-08:28
http://www.jiji.com/jc/c?g=int_30&k=2011010500108

 【ワシントン時事】米国防総省のラパン副報道官は4日、中国軍の新型ステルス戦闘機「殲20」とされる軍用機の写真がインターネット上に出回っていることについて、写真は見たが性能を左右するエンジンの開発状況は不明だと述べた。
 同副報道官は「中国が第5世代の戦闘機開発を追求していることは承知している」とした上で、「どの程度エンジンの開発が進んでいるか分からない」と語った。


---中国軍、次世代ステルス機試作完成 17年にも実戦配備---
2011年1月5日4時4分
http://www.asahi.com/international/update/0104/TKY201101040396.html

 【北京=峯村健司】中国軍が、レーダーに探知されにくい最新鋭の次世代ステルス戦闘機「殲(せん)20」の試作機を完成させた。カナダの民間軍事シンクタンク代表で、中国系カナダ人の平可夫氏が工場関係者から確認、中国軍関係者も朝日新聞に認めた。軍関係者によると今月中にも試験飛行を始め、早ければ2017年にも実戦配備する計画だ。
 中国軍は初の国産空母建造に乗り出すなど外洋進出に力を入れているが、空軍力でも急速に近代化を進めていることが裏付けられた。一方、日本では自衛隊が導入を目指した米軍の最新鋭ステルス戦闘機F22が生産中止になり、次の有力候補のF35も開発の遅れで導入のめどは立っていない。中国軍の動きは、東アジアの軍事バランスに影響を与える可能性がある。
 平氏によると「殲20」は国産エンジンで、高い機動性がある。F22より大きく大型ミサイルを搭載可能。空中給油で米領グアムまで飛行できるという。一方でレーダーやステルスの性能、巡航速度がF22の水準になるにはさらに10~15年かかるとみられる。
 だが平氏は、中国軍が米のF16に匹敵する戦闘機をすでに約400機保有していると指摘。「すでに空軍力で自衛隊を上回り、米国を猛追している。太平洋地域で米軍が空軍力の優位を失うのも時間の問題」と話した。


---中国の次世代ステルス戦闘機、試作機完成か---
2011年1月4日19時26分 読売新聞
http://www.yomiuri.co.jp/world/news/20110104-OYT1T00610.htm

 【香港=槙野健】中国の軍事動向に詳しい民間軍事研究所「漢和情報センター」(本部・カナダ)は4日、航空産業筋の話として、中国軍の次世代ステルス戦闘機「J(殲)20」の試作機がすでに完成していると明らかにした。
 高度なセンサー能力やレーダーに探知されにくいステルス性を備えた「第5世代戦闘機」に数えられる。第5世代機としては、米空軍のF22のほか、米英などが共同開発中のF35が代表的だが、J20はF22と似た外観で、国産のエンジンを搭載しているという。
 米露の最新鋭戦闘機に比べて巡航速度やステルス性が劣るとみられ、同センターの平可夫代表は、「今後、改良やテストを重ねる必要があり、配備には10年から15年はかかる」と分析している。


---Chinas J-20 Stealth Fighter In Taxi Tests---
Jan 3, 2011
By Bill Sweetman
Washington
http://www.aviationweek.com/aw/generic/story.jsp?id=news/awst/2011/01/03/AW_01_03_2011_p18-279564.xml&headline=Chinas%20J-20%20Stealth%20Fighter%20In%20Taxi%20Tests&channel=awst

China’s first known stealth aircraft just emerged from a secret development program and was undergoing high-speed taxi tests late last week at Chengdu Aircraft Design Institute’s airfield. Said to be designated J-20, it is larger than most observers expected-pointing to long range and heavy weapon loads.

Its timing, Chengdu’s development record and official statements cast doubt on U.S. Defense Secretary Robert Gates’s 2009 prediction (in support of his decision to stop production of the Lockheed Martin F-22) that China would not have an operational stealth aircraft before 2020.

The debut of the J-20 was announced in a November 2009 interview on Chinese TV by Gen. He Weirong, deputy commander of the People’s Liberation Army Air Force. The general said a “fourth-generation” fighter (Chinese terminology for a stealth fighter) would be flown in 2010-11 and be operational in 2017-19.

The J-20 is a single-seat, twin-engine aircraft, bigger and heavier than the Sukhoi T-50 and the F-22. Comparison with ground-service vehicles points to an overall length of 75 ft. and a wingspan of 45 ft. or more, which would suggest a takeoff weight in the 75,000-80,000-lb. class with no external load. That in turn implies a generous internal fuel capacity. The overall length is close to that of the 1960s General Dynamics F-111, which carries 34,000 lb. of fuel.

The J-20 has a canard delta layout (like Chengdu’s J-10) with two canted, all-moving vertical stabilizers (like the T-50) and smaller canted ventral fins. The stealth body shaping is similar to that of the F-22. The flat body sides are aligned with the canted tails, the wing-body junction is clean, and there is a sharp chine line around the forward fuselage. The cant angles are greater than they are on the Lockheed Martin F-35, and the frameless canopy is similar to that of the F-22.

The engines are most likely members of the Russian Saturn AL-31F family, also used on the J-10. The production version will require yet-to-mature indigenous engines. The inlets use diverterless supersonic inlet (DSI) technology, first adopted for the F-35 but also used by Chengdu on the J-10B-the newest version of the J-10-and the Sino-Pakistani JF-17 Thunder.

The main landing gears retract into body-side bays, indicating the likely presence of F-22-style side weapon bays ahead of them. The ground clearance is higher than on the F-22, which would facilitate loading larger weapons including air-to-surface munitions. Chinese engineers at the Zhuhai air show in November disclosed that newly developed air-to-ground weapons are now required to be compatible with the J-20.

Features at the rear of the aircraft-including underwing actuator fairings, axisymmetrical engine exhausts and the ventral fins-appear less compatible with stealth, so the J-20 may not match the all-aspect stealth of the F-22. There are two possible explanations for this: Either the aircraft seen here is the first step toward an operational design, or China’s requirements do not place as much stress on rear-aspect signatures.

The major open question at this point is whether the J-20 is a true prototype, like the T-50, or a technology demonstrator, with a status similar to the YF-22 flown in 1990. That question will be answered by whether, and how many, further J-20s enter flight testing in the next 12-24 months.

Developing an effective multi-mission stealthy aircraft presents challenges beyond the airframe, because it requires a sensor suite that uses automated data fusion, emission control and low-probability-of-intercept data links to build an operational picture for the pilot without giving away the aircraft’s own location.

A rapid development program would be a challenge for China’s combat aircraft industry, which is currently busy: The J-10B, FC-17 and Shenyang’s J-11B and carrier-based J-15 are all under development. However, the progress of China’s military aviation technology has been rapid since the first flight of the J-10 in 1996, owing to the nation’s growing economy and the push by the People’s Liberation Army for a modernized military force in all domains. Before the J-10, China’s only indigenous production combat aircraft were the Shenyang J-8 and Xian JH-7, reflecting early-1960s technology from Russia and Europe.

Engine development has lagged airframe development, with reports that the Shenyang WS-10 engine, slated to replace Russian engines in the J-11B, has been slow to reach acceptable reliability and durability levels. That may not be surprising, given that high-performance engine technology is founded on specialized alloys and processes that often have no other uses. (The existence of the J-11B, essentially a “bootleg” version of the Su-27, has been a strain on relationships between the Russian and Chinese industries.)

Progress with avionics may be indicated by the advent of the J-10B, with new features that include a canted radar bulkhead (normally associated with an active, electronically scanned array antenna), an infrared search-and-track system, and housings for new electronic warfare antennas.

One question that may go unanswered for a long time concerns the degree to which cyberespionage has aided the development of the J-20. U.S. defense industry cybersecurity experts have cited 2006-close to the date when the J-20 program would have started-as the point at which they became aware of what was later named the advanced persistent threat (APT), a campaign of cyberintrusion aimed primarily at military and defense industries and characterized by sophisticated infiltration and exfiltration techniques.

Dale Meyerrose, information security vice president for the Harris Corp. and former chief information officer for the director of national intelligence, told an Aviation Week cybersecurity conference in April 2010 that the APT had been little discussed outside the classified realm, up to that point, because “the vast majority of APT attacks are believed to come from a single country.”

Between 2009 and early 2010, Lockheed Martin found that “six to eight companies” among its subcontractors “had been totally compromised-e-mails, their networks, everything,” according to Chief Information Security Officer Anne Mullins.

The way in which the J-20 was unveiled also reflects China’s use and control of information technology to support national interests. The test airfield is located in the city of Chengdu and is not secure, with many public viewing points. Photography is technically forbidden, but reports suggest that patrols have been permitting the use of cell phone cameras. From Dec. 25-29, these images were placed on Chinese Internet discussion boards, and after an early intervention by censors-which served to draw attention to the activity-they appeared with steadily increasing quality. Substantial international attention was thereby achieved without any official disclosures.

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