Pardon me, can you provide a reliable source that proves WS-10A has manufacturing problems?
As i known, WS-10 has initially lot of problem for J-11A which is a reverse enginnering of AL-31. But WS-10A is the improving version combining with Chinese technology that produces the more powerful thrust and it has already been equipped for J-11B.
its ridiculous to claim that.
picture is worth a thousand words:
http://forum.keypublishing.co.uk/showpost.php?p=1490170&postcount=65
re-emphasizing that J-11B is equipped with FWS-10 engines,each rated at ~125kN thrust with afterburner(ISA,SLS,uninstalled).
FWS-10A is a modified variant of FWS-10 specially tailored for the J-10(single-engine version) ,just like AL-31F and AL-31FN.
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