J-20 would defeat F-15J in long-range air combat
After claiming that the Japanese F-2 multirole fighter is going to defeat its Chinese counterpart, J-10 in a future air combat over the disputed Diaoyutai (Senkaku) islands, Kyle Mizokami, an American military expert said that the People's Liberation Army's J-20 fifth-generation fighter will be able to shoot down Japan's American-built F-15J fighter in an article he wrote for the National Interest magazine on Oct. 16.
Although the F-15J is an excellent fighter, Japan's ministry of defense had expected to replace the older, cold war era aircraft with the F-22 fifth-generation fighter, Mizokami said. Japan, however, was later prohibited from purchasing the upgrade — the F-22 Raptor — from the US after Congress approved the Obey Amendment in 1997.
Japan's Mitsubishi Heavy Industries was license to manufacture a total number of 223 F-15J since 1981. An upgrade program was carried out by Japan Air Defense Force in early 21st century to fit advanced infra-red guided missiles such as AAM-3, AAM-5, improved AN/APG-63 mechanically-scanned pulse-doppler radars, the AAM-4B radar-guided missiles, improved electronic countermeasures and a nose-mounted infrared search and track sensor to the F-15J fighter.
The precise role of Chengdu Aerospace Corporation's J-20 fighter still remains unknown, Mizokami said. Due to its large size, the J-20 can be developed to mimic Russia's MiG-31 interceptor, with missions to shoot down enemy aerial refueling tankers, early warning and control aircraft, as well as perform reconnaissance and intelligence collection. It can also be designed as a medium long-range bomber like the American-built F-111.
In air combat, if China's J-20 is developed particularly to fight the F-15J as a long-range air superiority fighter, it would be extremely difficult for the F-15J fighter to detect the Chinese fifth-generation fighter at a longer range. If the designers of J-20 are able to reduce the aircraft's radar cross section, the F-15J fighter's advantage in launching an attack from beyond visual range against the J-20 will be reduced gradually.
If the J-20 was additionally fitted with the PL-15 active radar seeker missile, the chances of the F-15J's would be practically non-existent. Without a gun, the J-20 may still lose in a close-range battle against the F-15J, which has superior thrust and excellent maneuverability, Mizokami said. Still, the F-15J must be able to get closer to the Chinese fifth-generation fighter before engaging in any dog fight.
http://www.wantchinatimes.com/news/content...000066&cid=1101 dont forget j-31 and j-18 too... even 2ndary planes j-15 and j-16 also poses a threat