J-20 5th Generation Fighter VII
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Not sure if this is the right place to post but I'm currently looking for some of the cancelled competitors that lost to the J-20 If there is any quality documentation like good images or research papers that would be well appreciated thanks
You mean the SAC design with both canards and horizontal slabs?
Yeah I do remember seeing that one made by SAC as well as a another one but I don't remember which company SAC or CAC made it.
this is the video which I upload to youTube
Does anyone know why this J-20 engine emits so much black smoke
Does anyone know why this J-20 engine emits so much black smoke
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WS-10 does smoke when transitioning between military power and afterburner. This is actually present on all engines, including even the F-119 and F-135 but it is less apparent for them. If you look at the video from Zhuhai 2018 you can also notice the J-20 emitting faint black smoke during similar maneuvers.
That’s not exactly fair. For the F-135 the smoke is barely noticeable even when panned in whereas the smoke is a lot darker in the case of WS-10, but it is no where as bad as the RD-33 series.
I think that it is possible to reduce smoke emission during the performance by staying in afterburner as much as possible. The Jf-17 uses RD-93, a variant of RD-33, but I don’t recall seeing it smoking at Zhuhai or other air shows. The J-20 may not have this luxury unless it takes off from the Zhuhai airport directly.
I doubt that you can be sure if those are smoke from the engine or contrail. Contrail can be caused by both hot gas from engine or condensation of water vapor in the air around the control surfaces. If the contrail is between the observer and light source, it will look black because it blocks light, otherwise it is white because of reflection. You can only be sure it is smoke from incomplete combustion if the smoke is reflecting rather than blocking light to the observer.
I think people have been fed with the idea that non-Western engines must be so bad to smoke, therefor from observations of similar phenomenon the question is always repeated on the Chinese and Russian engines. I know some Russian engines do smoke, but those are well observed in good lighting condition and close range. But not every non-western engine is like that.
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