United States House Committee on Armed Services chairman Howard McKeon said on the J-20 "my understanding is that they built it on information that they received from Russia, from a Russian plane, that they were able to copy".
Russia has denied that any of its project 1.44 materials had been provided to China.
Rightrdia believes the Russians because it has been highly critical of China reverse engineering it aircraft and other weapon systems. China prefers to buy one model and reverse engineer it rather than buying a squadron of Russian fighter aircraft.
Balkan military officials told the Associated Press that China and Russia may have adopted some stealth technology from a Lockheed F-117 Nighthawk, which was shot down by the Serbian military in 1999 during the Kosovo war.
If Chinese experts used the F-117 stealth coatings, the result would be decades behind current American state-of-the-art.
However, Chinese test pilot Xu Yongling said that the J-20 was a "masterpiece" of home-grown innovation. He also said the F-117 technology was already "outdated" even at the time it was shot down, and could not be applied to a next-generation stealth jet.
Janes editor James Hardy agrees that it was unlikely China would have learned much from the wreckage.
- Crew: one (pilot)
- Length: 21.26 m (69 ft 9 in)
- Wingspan: 12.88 m (42 ft 3 in)
- Height: 4.45 m (14 ft 7 in)
- Wing area: 59 m² (630 sq ft)
- Empty weight: 17,000 kg (37,479 lb)
- Max takeoff weight: 36,287 kg (80,000 lb) upper estimate
- Powerplant: 2 × WS-10G (prototype); WS-15 when J-20 is serving afterburning turbofans dry, 180 kN (40,000 lbf) with afterburner
- Maximum speed: Mach 2.0 or less (DSI limit)
- Range: 5,500 km (3,418 mi; 2,970 nmi)
- Combat range: 2,000 km (1,243 mi; 1,080 nmi)
- Service ceiling: 20,000 m (65,617 ft)
- None on prototype
- Production aircraft will be equipped with PL-21 LRAAM, PL-12D MRAAM, PL-10 SRAAM, LS-6 Precision Glide Bomb, 30mm cannon, up to four rocket launchers, two IR decoy launchers, air-to-surface missiles and smart bombs.
see more photos at: http://news.xinhuanet.com/english/photo/2012-05/02/c_131563172.htm
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