So it's a speed envelope issue.
J-20... The New Generation Fighter III
- Thread starter siegecrossbow
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So it's a speed envelope issue.
plawolf
Lieutenant General
Are those plugs secured with...tape?
My guess is that this is probably a problem caused by the secrecy surrounding the plane.
I do not believe CAC makes inlet plugs themselves, which means that if they wanted perfect fitting ones, they will need to supply the exact dimensions of the J20's inlets to a supplier, who is unlikely to have been cleared for the level of secrecy the J20 is at present.
The other possibility is that they are still experimenting with the RAM, and as such does not want a too snug fit in case the plugs damage the RAM paint around the DSI and intakes.
Engineer
Major
All J-10s that were crashed used Al-31FN, none used WS-10A. Most of the crashes were caused by lubricant issue from the Al-31FN. This doesn't indicate Al-31FN has better reliability than WS-10A.
J-10A is designed to use Russian engine. So when CAC builds more J-10As, of course they will have to buy more Russian engines. Again, this has nothing to do with reliability.
Production J-11Bs are fitted with WS-10As before J-20 had its first flight. If WS-10A isn't reliable, J-11Bs wouldn't entire serial production.
How many J-10As built? How many J-11Bs built? How many AL-31FN equipped J-10As crashed because of engine? Was the cause engine 'built-in' faults or servicing problems? You want to say that you have read investigation board reports?
That's plain statistics. Now CAC officials looks like masochists from your description - buying new and new 'bad' AL-31FN instead of redesigning J-10s for such reliable Taihang.
That's plain statistics. Now CAC officials looks like masochists from your description - buying new and new 'bad' AL-31FN instead of redesigning J-10s for such reliable Taihang.
Engineer
Major
You are the one who suggested Al-31 is more reliable, yet facts fly in your face as I have shown. Al-31FN having lubricant issues is a well known problem, and is the cause for most of the crashes. This doesn't sound at all like Al-31 being more reliable than WS-10A.
They did redesigned the J-10 for Taihang -- it's called J-10B. Meanwhile, they will have to stick with the not-so-reliable Al-31FN when building more J-10As.
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