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New Chinese 5th Generation Fighter Jet--J31 Performs More Flight Tests

By Jeffrey Lin and P.W. Singer

Posted 05.22.2014 at 10:39 am

The J-31 continues flight testing at a Shenyang Aircraft Corporation research facility in northern China. As China's second fifth generation fighter, the J-31 makes China the second nation in the world, after the United States, to have flown two fifth generation fighters. With a length of about 17 meters and an 11.5m wingspan, the J-31 is about the size of the F-35 Lightning II and smaller than the F-22, J-20 and PAK-FA. A large model of the J-31, designated as "F-60", appeared at the Zhuhai 2012 Airshow, indicating a Chinese willingness to export the J-31 as a international competitor to the F-35. Once it enters service, the J-31 is likely to be serve alongside less numerous J-20s as part of a "high/low" combination, similar to the F-35/F-22 mix in the US Air Force. The J-31 is also likely to serve aboard future Chinese aircraft carriers, greatly enhancing their capabilities. Pakistan is likely to be the first export customer for the J-31, as Islamabad hopes to counter the Indian purchase of Russian FGFA stealth fighters.



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J-31 Prototype Flies Again The first J-31 prototype, number "31001", performs another flight test. Its 5th generation features include internal weapons bay, stealthy fuselage and an AESA radar. http://club.mil.news.sina.cn

The J-31 "Gyrfalcon" stealth fighter reportedly uses technology from the J-19, Shenyang's failed bid for the Chinese heavy 5th generation fighter (which the Chengdu J-20 won). The J-31 has conducted at least six test flights in Shenyang since fall 2012 and a second prototype is under assembly. Compared to censorship of some J-20 photos, there is less secrecy about the J-31's development.

To save weight, the J-31 uses an immense number of of 3D laser printed components, including titanium wing spars. Compared to the F-35, the J-31 uses two smaller Russian RD-33 engines instead of a larger engine like the AL-31 or WS-10. This gives the J-31 a flatter fuselage than the F-35; which suggests a more pronounced air superiority focus for the J-31, since a flatter fuselage results in a smaller weapons bay but improves fuel efficiency and speed by decreasing drag. It is likely that the J-31 could carry larger missiles like the YJ-12 anti-ship missile under its wings, but like with the F-35, at the cost of stealth. Vladimir Barkovsky, chief of the Russian MiG aircraft design bureau, has praised the J-31 as a "well done indigenous design" and "good machine" resulting from China's ambitious aviation industry.



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F-60 Display at Zhuhai 2012 A large display model of the J-31, under its export designation "F-60", is exhibited at the Zhuhai 2012 Air Show. Shenyang Aviation Corporation's display of the F-60 suggests Chinese ambition to sell a 5th generation competitor to the F-35 for stealth fighter exports. mil.sohu.com

New Chinese 5th Generation Fighter Jet--J31 Performs More Flight Tests | Popular Science

Russian Officials Reveal J-31 Engines and Describe China Sales
 
Maybe for next gen Naval fighter, it is rumor. Future prepare to replace J-15.
 
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