The WS-15 is widely believed to have a wet thrust of 180kN, that's significantly higher than even the 150kN upper limit of the WS-10C (which stretches credulity for an engine from that generation).Yeah there's no point in WS-15 if WS-10C can produce 150kn of thrust, except easier time supercruising. Even as of now, J-20 can reach a speed of Mach 2.52.
I did, however, heard that the upper limit of WS-10 core can support that.
expecting afterburn 150kN-170kN from C variant;Probably on the lower end ... 145 kN.
Su-57 RCS/IR Suppression is very poor ... honestly it shouldn't even be in the same tier as the F-35/J-20/F-22. It may have the best subsonic kinematics out of all three aircraft, but that hardly matters when you will be shot down before entering WVR.From 日月同明 @onceggyy123 on 2020-11-20:
F22, F35 and J20 all use integrated cockpit. Don't underestimate this piece of glass, which is made of high-strength composite materials by compression layer by layer. The process is very difficult. Even the Russians can't make it, and the Su57 can only use the old cockpit.
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Old cockpit will destroy stealth ability. Pay attention to the yellow lines in the cockpit.
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The design of stealth fighter is not as rough as you think. J20, F22 and F35 should be combined with parallel design principle even at the joint of canopy. This is why the integrated cockpit is designed to reduce RCS.
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Due to the rough design and process of Su57, its RCS is much higher than that of J20.
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The relatively large gaps in stealth fighters must meet the principle of parallel design. This is why the fifth generation fighters all use integrated cockpits. Interested friends can draw a parallel line of F22 and F35. #J20 #F35 #F22 #stealth #China
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Even the gap in the weapons warehouse conforms to the principle of parallel design. For smaller gaps, serrated stealth should be used. Russian Su57 fighters do not meet the above conditions. Su57 only meets the basic parallel design.
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Even such a small gap in China J20 weapons warehouse must meet the principle of parallel design。 #stealth #F22 #F35 #J20
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The blogger, 日月同明 @onceggyy123, has joined Twitter since August 2012.
After the WS-15 becomes operational, the WS-10 version will gradually cease in production. The fact is that the WS-15 is a generational leap over even the latest WS-10 variant. The slight range improvement and lower cost with the WS-10 is not nearly enough to offset the massive benefits offered by the WS-15.Even if WS-10C has a thrust over 150KN, it doesn't mean there is no point to have WS-15. WS-10 series has much higher bypass ratio comparing to WS-15, suggesting J-20 equipped with WS-15 will has much better supersonic performance (like super-cruise), although the ferry range will be comprised.
Thats why I think PLA should go for two version of J-20, J-20A with WS-10 for low cost and long range, J-20B with WS-15 for much better supersonic performance.