Trac
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The WS-13 will need three years to mature but in the RD-93 will (the recent rumours of a sanction are, as a matter of fact, just rumours) do nicely for the time being.
As for the WS-10A, keep in mind that unlike J-10 and J-10A (which are often used interchangeably) the WS-10A is an improved version of the earlier WS-10. I admit that there are still problems with quality control but the WS-10A has already solved many of the problems on the original prototype (increasing the thrust and enhancing engine life time). Keep in mind that dependence on foreign engines has plagued the PLAAF for the past few decades and therefore is a priority that will be sorted out ASAP.
Sir,
I think you have to read this one
Chinese AVIC Top Head admits the Poor Quality of Jet Engine
Posted on 02 April 2009
Apr.2 (China Defense Mashup Reporting by Johnathan Weng) -- Mr. Lin Zuoming (林左鸣, the top head of ACIC (Aviation Industry Corporation of China), has to admit that China's "Taihang" WS-10 Turbofan engine is still unsatisfactory in its quality.
In one of his opening letter, he says that the military aircraft engine production has been the "chronic illness" in Chinese aviation industry and he urges that the solving of "Taihang" WS-10 Turbofan engine is the key step to reinforce the Quality Control Procedure in AVIC.
Now PLA Air Force has install some WS-10 engine on its J-11B dual-engine heavy fighters for evaluation. But the result is not positive. Some resources report that the quality of WS-10 engine is terrible and PLA Air Force has begun to lose patiency of purchasing more WS-10 engine.
In early March 2009, One Chinese PLA Air Force Pilot sucessfully made a forced landing of one J-10 fighter due to the air shut-down of AL-31F engine. As one kind of single engine fighter, J-10 is very dangerous when power system in trouble.
As a result, PLA Air Force has been knowing the stability of Russian engines and just imported AL-31F engines before the finish of WS-10 development. But the fact shows that the WS-10 engine just looks advanced but has no real advantages to AL-31F.
The forced landing accident warns PLA Air Force that the aviation engines has been the killing shortages of its J-10 and J-11 fleets. No combat aircraft after all can fight without reliable engines.
Chinese AVIC Top Head admits the Poor Quality of Jet Engine|China Military Power Mashup