Paralay…has it flown yet ?

No, he has not yet flown. The idea of the aircraft – to create a cheap analog jet.
Disadvantages of this aircraft:
1. propellers small diameter – a huge loss of efficiency.
2. propellers closed – large efficiency losses
3. The car engine – twice (at least) heavier aircraft engine.

Conclusion: this aircraft can not fly well :apologetic:

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edit: nevermind, your side view uses a transparent exhaust cover is all.

Unfortunately, I do not have vector drawings of other engines, only RD-33

also, paralay, that drawing of 31001 shows missiles with clipped fins inside the plane. no such missiles are known. both the fc31 models and the actual missiles in j20 have fins that do not fold. furthermore, 310001 shows basically an amraam sized missile. pl12 and future pl15 use the same body – one which is 2 cm wider than amraam and some 30ish cm longer.

Do you have drawings of these missiles?

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In this case, it is very important to compare the rate of production

J-31 poster seen in Zuhai.

😎

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Limitation for the Su-30 is not due to the engines. Was reinforced construction.