J-20 Uses Homegrown WS-15, More Powerful, Reliable than Russian AL-31F


series-produced-j-20-using-ws-15

The above photo of series produced J-20 proves that it uses China’s WS-15 engines as there are no grooves on the nozzles of its engines.

The photo below is the nozzle of Russian AL-31F engine used on J-20 prototypes. There are two groves on the nozzle.
al-31f-nozzle

The photo below is the nozzle of China’s homegrown WS-15 engine with no grooves on it.
ws-15-nozzle

According to the photo below, WS-15 is much more powerful than AL-31F. The AL-31F’s nozzle has shrunk so that the speed of smoke is much higher than that of the WS-15 with nozzle not shrunk while they produce similar thrust for the J-20.
comparison-between-al-31f-and-ws-15

The article reveals that the temperature before turbine is 1,474 degree Celsius in WS-15, the highest in the world. No wonder WS-15 is much more powerful than AL-31F. Its reliability lies between Western and Russian ones with a life of 900 hours longer than AL-31F.

Since the engine problem has been solved, J-20 can be regarded as a capable modern stealth fighter as it has satisfactory electronics and stealth shape.

Source: mil.news.sina.com.cn “Depth Column: It is certain that homegrown WS-15 engines are installed on J-20: Reliability surpasses Russian engine?” (summary by Chan Kai Yee based on the report in Chinese)

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3 Comments on “J-20 Uses Homegrown WS-15, More Powerful, Reliable than Russian AL-31F”

  1. Sorry, but what a piece of crappy BS !!!!

    Nothing has been proofed, no WS-15 is ready and surely not operational and this is the worst part:

    “The photo below is the nozzle of China’s homegrown WS-15 engine with no grooves on it.”

    Using images of an PW-F100 installed in an F-16C to proof is plain stupid.

    The author simply does not see that “grooves” is due to different convergent/divergent settings of the nozzle … and by the way, how could an image proof that an engine has more thrust?

    Deino

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  2. Steve says:

    Third best news I have heard this year for China’s Research and Development. First, is the Quantum Satellite Communication Technology, second, launch of Tianggong 11 and now 1,474 degree celsius for the WS-15, highest in the world.

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