a********l
发帖数: 39524 | 1 访问结束了，媒体运作回复正常。
http://news.yahoo.com/s/ap/20110123/ap_on_re_eu/eu_us_stealth_t
_china
China's new stealth fighter may use US technology
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." |
|
