The WS-10A reportedly matured enough after 2009 to power the J-11B Block 02 aircraft, and Jane's reported the J-11B as powered by the WS-10 in 2014. One regiment converted to WS-10-powered J-11Bs in 2007, but was grounded for an extended period due to poor operational reliability. Testing may have started as early as 2002 an image from the 2002 China International Aviation & Aerospace Exhibition allegedly depicted a J-11 with one engine replaced with a WS-10. The J-11B may carry the PL-12 and PL-15 air-to-air missiles Engine replacement īy 2004, the J-11 was being tested with the Shenyang WS-10. The airframe is slightly lighter due to greater use of composites. Ĭhinese subsystems on the J-11B include Type 1474 radar, 3-axis data system, power supply system, emergency power unit, brake system, hydraulic system, fuel system, environment control system, molecular sieve oxygen generation systems, digital flight control system, and glass cockpit. Many domestic subsystems are improvements of those found on the Su-27SK. By 2011, reportedly 90% of the J-11B was based on subsystems and parts designed in China, with the engine presumably being a major part of the remainder. The two-seater J-11BS followed two years after the J-11B. Three prototypes were delivered to the PLAAF for testing in 2006. It was conceived as a way to remove the J-11's dependency on Russia. The J-11B is a multirole variant of the J-11 incorporating Chinese subsystems. Unconfirmed upgrades included improved cockpit displays, and fire control systems for R-77 or PL-10 missiles. īy 2015, J-11s were upgraded with Chinese-made missile approach warning systems (MAWS). The original licence did not officially include carrier-capable aircraft (eg. However, through 2009 China continued to hold licenses to produce Russian aircraft and components, which included previously-confidential provisions concerning intellectual property (IP). Ĭo-production reportedly ended in 2004 with the development the J-11B - a variant with domestic subsystems - in violation of the co-production agreement. By 2006, at least 105 J-11 and J-11As had been produced with improved domestic avionics. Production of the J-11A, an 'indigenous' variant, began in 2000. Russia resisted China's demands for upgraded avionics, eventually upgrading the obsolescent N001 pulse-Doppler radar with the improved N001V. Five were built by 2000, and another 20 by 2003, by which time production was of high quality and incorporated local airframe parts Russia did not object to local airframe parts, which allowed KnAPPO to reduce the contents of the kits supplied. The first two were completed in December 1998 but were poorly assembled and required Russian assistance to rebuild. Furthermore, the agreement prohibited China from exporting its production. Production would start using kits manufactured by Komsomolsk-on-Amur Aircraft Plant (KnAPPO.) Subsystems ( avionics, radars and engines) would be imported from Russia and not be produced under license.

In 1996, China Rosoboronexport entered a $1.2 billion agreement permitting SAC to produce 200 Su-27UBKs under license. Three orders were made in the 1990s, and the deliveries of 36 Su-27SKs and 42 Su-27UBKs started in 1992 and continued into the 2000s. China selected the Su-27 over the Mikoyan MiG-29. China turned to the Soviet Union for weapons following the 1989 Tiananmen Square protests and massacre and the resulting Western arms embargo. Su-27 purchase Ĭhina was the Su-27's first export customer. The project was abandoned as no suitable engine could be procured, and the competing Nanchang J-12 was far more advanced. The proposal from the Shenyang Aircraft Design Institute and Shenyang Aircraft Factory was designated 'J-11' it resembled a French Dassault Mirage F1 and was powered by a British Rolls-Royce Spey 512 engine.

The aircraft is operated by the People's Liberation Army Air Force (PLAAF) and the People's Liberation Army Naval Air Force (PLANAF).ĭevelopment Proposed J-11 īased on experience from the Vietnam War, the PLAAF issued a requirement in 1969 for a STOL light fighter to replace the Shenyang J-6 and Nanchang Q-5. It is manufactured by the Shenyang Aircraft Corporation (SAC). The Shenyang J-11 ( Chinese: 歼-11) is a twin-engine jet fighter of the People's Republic of China whose airframe is derived from the Soviet-designed Sukhoi Su-27.

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