160 KN is a beast !!
Even if WS-20 hits 145 KN, it will be better than the Russian PS-90A and Y-20 can reach the same landing and take off performance with C-17 with that kind of thrust !
Chinese Engine Development
- Thread starter jackbh
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160 KN is a beast !!
Even if WS-20 hits 145 KN, it will be better than the Russian PS-90A and Y-20 can reach the same landing and take off performance with C-17 with that kind of thrust !
More reason to believe WS-20 will have figures close to 160 kN. Otherwise they could've settled with WS-18. Let's be optimistic here.
Like WS-10 & WS-15, the figures (thrust & bypass ratio) for WS-20 have kept changing over the long course of development. 1) The original WS-20 was based on the SF-A engine targeted for C919, which had a rather conservative figures of 120KN~130KN & 5:1; 2) later WS-18 was successfully developed and its figures were pretty close to those of WS-20, rendering the original figures rather pointless so they had to be raised to 160KN & 6:1; 3) finally it is said that the planned upgraded version of WS-20 will target 180KN & 8:1.
How credible are these figures? 1) is pretty credible because the figures were displayed in shows way back when. 2) is logically reasonable and feasible although the evidence has been fuzzy. 3) is largely based on some circumferential evidence (papers & pictures) and inference. It requires a bit of leap of faith.
In any case, this is PLA watching. At high-level, the development and trend make a lot of sense, but don't take these exact figures religious.
Keep in mind that because thrust growth for high bypass engines is dictated a lot by the front fan power rather than compressor power, it’s an easier and more straightforward proposition to iteratively increase overall thrust for high bypass engine designs than for low bypass engine designs.
The problem is the bypass ratio of 8:1.Being a military HBTubofan, wouldn't the bypass ratio be around 5 or 6:1?
PW2000 has 6:1.
AECC Engine department's report confirms that they have built prototypes for fifth and sixth generation aircraft engines.
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I think so too. The slide repeatedly use "航-20", apparently on purpose. It also says "probably uses WS-20", why the probably? Lastly, the guy who chair the meeting is too 娘炮 to be an ordinary engineer.
Specifically says key technological capabilities for fourth (fifth) gen engines are being greatly expanded, and initial research on fifth (sixth) generation technological capabilities continues to see major breakthroughs.
I am now of the belief that rumors of WS-15 testing on J-20 are authentic.