2011年1月26日水曜日

J20 F117墜落機を複製か

J20はF117墜落機を複製した可能性があるとのこと。
 中国が開発した次世代ステルス戦闘機「殲20」には、墜落して流出した
米空軍のステルス攻撃機の機密技術が使われているのではないか-。
AP通信は、1999年3月のNATO軍による旧ユーゴスラビア空爆の事情に詳しい
クロアチア軍高官の指摘として報じた。

クロアチア軍高官
・墜落した同機の残がいは地元農民らが回収していた
・「中国の外交関係者らが当時、農民から残がいを買い上げた。中国は
 こうした素材をステルス技術の解明と戦闘機開発のために使ったに
 違いない」

別のセルビア軍幹部
「ステルス機の破片は、いくつの大使館の防衛武官(外国の軍)の手に
渡った」

コソボ紛争で対戦したクロアチア軍とセルビア軍の関係者による取材が
記事となっているが、推論を報道しただけ。
破損した機体の素材や塗料の分析をしても、量産時に加工可能な材料が
購入できるかは別の話。
ステルス機能は、素材と塗料だけで性能が決まるわけではないので、B-2
の情報も手に入れ、開発中なのだろう。
米ステルス機が、初めて国外に飛行した際、対象国から、レーダーに
映っていると報道されたことがあった。
中国以外の国が、中国製ステルス機のステルス性能ついて、報道して
いない。周辺国は情報を入手しているはずだから、秘匿扱いなのだろう。

中国は、海洋覇権の手法について、「やりすぎだった」と米国元補佐官
に言わせたが、国外の中国人らが、6月に尖閣諸島上陸と言う説もある。
軍事産業スパイも中国はいつか誰かに謝罪してもらうのか。

F117 完全退役
米軍事費削減 F22生産中止か
矛盾する政府
殲20のメディア戦略


China's New Stealth Fighter May Use US Tech The Associated Press


---中国 ステルスもコピー? 米墜落機収集か---
2011年1月24日 朝刊
http://www.tokyo-np.co.jp/article/world/news/CK2011012402000028.html

 【ロンドン=松井学】中国が開発した次世代ステルス戦闘機「殲(せん)20」には、墜落して流出した米空軍のステルス攻撃機の機密技術が使われているのではないか-。AP通信は二十三日、一九九九年三月の北大西洋条約機構(NATO)軍による旧ユーゴスラビア空爆の事情に詳しいクロアチア軍高官の指摘として報じた。
 レーダーに捕捉されにくい米空軍のF117ステルス攻撃機だが、九九年三月下旬の同空爆時に旧ユーゴ領内で墜落したことから作戦に参加していたことが明らかになった。クロアチア軍高官は、墜落した同機の残がいは地元農民らが回収していたと説明したうえで、「中国の外交関係者らが当時、農民から残がいを買い上げた。中国はこうした素材をステルス技術の解明と戦闘機開発のために使ったに違いない」と述べた。別のセルビア軍幹部も「ステルス機の破片は外国の軍の手に渡った」と説明しているという。
 米空軍ステルス機が墜落した当時、多くの欧州メディアは同機の残がいが輸送機でロシアに運ばれたとも伝えていた。


---中国は「やりすぎだった」と反省 漁船衝突事件で元米大統領補佐官---
2011.1.24 10:48
http://sankei.jp.msn.com/world/news/110124/amr11012410490068-n1.htm

 米外交界の重鎮、ブレジンスキー元大統領補佐官(国家安全保障問題担当)は23日放送のCNNテレビで、昨年の沖縄県・尖閣諸島付近での中国漁船衝突事件などを念頭に、中国が東シナ海や南シナ海での対応を「やりすぎだった上に、まずかった」と反省しているとの見方を示した。
 ブレジンスキー氏は「日本や(南シナ海で中国と深刻な領有権紛争を抱える)ベトナムを刺激した」と指摘した上で「中国は罪悪感は感じていないだろうが、別のやり方があったと考えていると思う」と述べた。(共同)


---China used downed U.S. fighter to develop first stealth jet---
By Mail Foreign Service
Last updated at 10:18 PM on 23rd January 2011
http://www.dailymail.co.uk/news/article-1349906/China-used-downed-U-S-fighter-develop-stealth-jet.html

China was able to build its first stealth bomber using technology gleaned from a downed U.S. fighter, it has been claimed.
Beijing unveiled its state-of-the-art jet - the Chengdu J-20 - earlier this month.

Military officials say it is likely the Chinese were able to develop the stealth technology from parts of an American F-117 Nighthawk that was shot down over Serbia in 1999.

During Nato’s aerial bombing of the country during the Kosovo war, a Serbian anti-aircraft missile shot the Nighthawk. It was the first time one of the ‘invisible’ fighters had ever been hit.

The Pentagon believed a combination of clever tactics and luck had allowed a Soviet-built SA-3 missile to bring down the jet.

The pilot ejected and was rescued but the wreckage was strewn over a wide area of farmland.

Civilians collected the parts - some the size of small cars - as souvenirs.

‘At the time, our intelligence reports told of Chinese agents crisscrossing the region where the F-117 disintegrated, buying up parts of the plane from local farmers,’ says Admiral Davor Domazet-Loso, Croatia’s military chief of staff during the Kosovo war.

‘We believe the Chinese used those materials to gain an insight into secret stealth technologies... and to reverse-engineer them.’

A senior Serbian military official confirmed that pieces of the wreckage were removed by souvenir collectors, and that some ended up ‘in the hands of foreign military attaches’.

In what appears to be a clear message of its military might, China staged the first test flight of the new stealth jet earlier this month - at the same time that U.S. defence chief Robert Gates was in Beijing on the second day of an official visit.
The fighter jet's successful test follows reports that China is planning to launch its first aircraft carrier and has tested a ballistic missile capable of sinking U.S. vessels in the Pacific.
The prototype jet was shown in flight, with civilians and air force personnel watching on, in pictures on several unofficial Chinese military websites, after local media outlets had claimed a successful test flight had taken place.
While the Chinese government is renowned for its stringent approach to state secrets, photos and reports of the J-20's test have remained online.
According to international agencies, the scheduling of the test flight to coincide with Mr Gates' visit to China, coupled with the seemingly relaxed approach to reports about the flight, indicated Beijing's willingness to be more open about its military intentions.
Nonetheless, reports of the stealth's successful test will do little to quell anxieties about the speed of China's military progress.
The U.S. F-22 Raptor is currently the only operational stealth fighter in the world, while Russia's Sukhoi T-50 jet is expected to enter active service in the next four years.
But pictures of China's J-20, which looks larger than the F-22 or T-50, will be of concern to the Taiwanese government, whose antiquated aircraft and radar systems would provide little resistance to radar-evading Chinese jets.
The U.S. has claimed China would not be capable of developing a stealth jet for years and production of the F-22 was recently capped.
But the J-20's successful test, coupled with reports of the development of an aircraft carrier and missile system, confirms China's growing military might.

SPY TECH: HOW THE J-20 SHAPES UP AGAINST ITS RIVALS
A study of photographs of the aircraft by industry journal Aviation Week revealed the J20...
*is a single seat, twin-engine aircraft.
*is bigger and heavier than its Russian (Sukhoi T-50) and U.S. (F-22) equivalents.
*is around 75ft long with a wingspan of 45ft
*has landing gear that retracts into body-side bays, indicating the likely presence of F-22-style side weapons.
*could be loaded with larger weapons including air-to-surface munitions because of the distance of its base from the ground.
*likely weighs 75,000-80,000lb, with no external load, suggesting a generous fuel capacity.
*is compatible with newly developed air-to-ground weapons revealed by Chinese engineers at the Zhuhai air show in November.

The F-22 Raptor...
*is also a single seat-twin engine stealth fighter.
*is 62 feet long with a wingspan of 44ft 6in, making it lighter and more maneuverable.
*It stands 16ft, 5in off the ground.
*can carry medium and short range air-to-air missiles in three internal weapons bays on the bottom and sides of the fuselage.
*It weighs 43,430lb when empty, and around weight: 64,460lb when loaded. Its maximum takeoff weight is 83,500lb.
*Its fuel capacity is 18,000lb internally, or 26,000lb when it uses two optional external fuel tanks,
*While many are still operational, the F22 is coming towards the end of its shelf-life, with the 2010 National Defense Authorization Act containing no funding for F-22 production.

The Sukhoi T50...
*is currently being developed for the Russian Air Force by Moscow defence company Sukhoi.
*had, by November 2010, made 40 test flights. The second prototype is due to start its flight test this year.
*will replace the MiG-29 Fulcrum and Su-27 Flanker and directly compete with the F-22 Raptor.
*is a one-seat twin engine stealth fighter.
*is 65.9ft long with a wingspan of 46.6ft and stands 19.8ft high.
*weighs 40,785lb when empty and 57,320lb fully loaded with a fuel capacity of 22,711lb.
*has a top speed of Mach 2, 1,560mph.
*does not yet have armaments but there is apparent provision for two 30mm cannons with two internal bays for guns and missile.


---China's new stealth fighter may use US technology---
Published January 23, 2011
http://www.foxnews.com/world/2011/01/23/chinas-new-stealth-fighter-use-technology/?test=latestnews

BRUSSELS - Chinese officials recently unveiled a new, high-tech stealth fighter that could pose a significant threat to American air superiority - and some of its technology, it turns out, may well have come from the U.S. itself.

Balkan military officials and other experts have told The Associated Press that in all probability the Chinese gleaned some of their technological know-how from an American F-117 Nighthawk that was shot down over Serbia in 1999.

Nighthawks were the world's first stealth fighters, planes that were very hard for radar to detect. But on March 27, 1999, during NATO's aerial bombing of Serbia in the Kosovo war, a Serbian anti-aircraft missile shot one of the Nighthawks down. The pilot ejected and was rescued.

It was the first time one of the much-touted "invisible" fighters had ever been hit. The Pentagon believed a combination of clever tactics and sheer luck had allowed a Soviet-built SA-3 missile to bring down the jet.

The wreckage was strewn over a wide area of flat farmlands, and civilians collected the parts - some the size of small cars - as souvenirs.

"At the time, our intelligence reports told of Chinese agents crisscrossing the region where the F-117 disintegrated, buying up parts of the plane from local farmers," says Adm. Davor Domazet-Loso, Croatia's military chief of staff during the Kosovo war.

"We believe the Chinese used those materials to gain an insight into secret stealth technologies ... and to reverse-engineer them," Domazet-Loso said in a telephone interview.

A senior Serbian military official confirmed that pieces of the wreckage were removed by souvenir collectors, and that some ended up "in the hands of foreign military attaches."

In Washington, an Air Force official said the service was unaware of any connection between the downed F-117 plane and development of Chinese stealth technology for the J-20. The official spoke on condition of anonymity because the subject involves classified information.

Efforts to get comment from China's defense ministry were unsuccessful.

China's multi-role stealth fighter - known as the Chengdu J-20 - made its inaugural flight Jan. 11, revealing dramatic progress in the country's efforts to develop cutting-edge military technologies.

Although the twin-engine J-20 is at least eight or nine years from entering air force inventory, it could become a rival to America's top-of-the-line F-22 Raptor, the successor to the Nighthawk and the only stealth fighter currently in service.

China rolled out the J-20 just days before a visit to Beijing by U.S. Defense Secretary Robert Gates, leading some analysts to speculate that the timing was intended to demonstrate the growing might of China's armed forces.

Despite Chinese President Hu Jintao's high-profile visit to the United States this week, many in Washington see China as an economic threat to the U.S. and worry as well about Beijing's military might.

Parts of the downed F-117 wreckage - such as the left wing with US Air Force insignia, the cockpit canopy, ejection seat, pilot's helmet and radio - are exhibited at Belgrade's aviation museum.

"I don't know what happened to the rest of the plane," said Zoran Milicevic, deputy director of the museum. "A lot of delegations visited us in the past, including the Chinese, Russians and Americans ... but no one showed any interest in taking any part of the jet."

Zoran Kusovac, a Rome-based military consultant, said the regime of former Serbian President Slobodan Milosevic routinely shared captured Western equipment with its Chinese and Russian allies.

"The destroyed F-117 topped that wish-list for both the Russians and Chinese," Kusovac said.

Russia's Sukhoi T-50 prototype stealth fighter made its maiden flight last year and is due to enter service in about four years. It is likely that the Russians also gleaned knowledge of stealth technology from the downed Nighthawk.

The F-117, developed in great secrecy in the 1970s, began service in 1983.

While not completely invisible to radar, its shape and radar-absorbent coating made detection extremely difficult. The radar cross-section was further reduced because the wings' leading and trailing edges were composed of nonmetallic honeycomb structures that do not reflect radar rays.

Kusovac said insight into this critical technology, and particularly the plane's secret radiation-absorbent exterior coating, would have significantly enhanced China's stealth know-how.

Alexander Huang of Taipei's Tamkang University said the J-20 represented a major step forward for China. He described Domazet-Loso's claim as "a logical assessment."

"There is no other stronger source for the origin of the J-20's stealthy technology," said Huang, an expert on China's air force. "The argument the Croatian chief-of-staff makes is legitimate and cannot be ruled out."

The Chinese are well-known perpetrators of industrial espionage in Western Europe and the United States, where the administration has also been increasingly aggressive in prosecuting cases of Chinese espionage.

Western diplomats have said China maintained an intelligence post in its Belgrade embassy during the Kosovo war. The building was mistakenly struck by U.S. bombers that May, killing three people inside.

"What that means is that the Serbs and Chinese would have been sharing their intelligence," said Alexander Neill, head of the Asia security program at the Royal United Services Institute, a defense think tank in London. "It's very likely that they shared the technology they recovered from the F-117, and it's very plausible that elements of the F-117 got to China."
___
Stojanovic reported from Belgrade. Snjezana Vukic in Zagreb, Robert Burns in Washington and Peter Enav in Taipei contributed to this report.

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