Chinese Engine Development

[wuguanhui]

M2 without AB is a bit diabolical if I'm being honest. Imagine how quick the acceleration kicks in full AB.

But again, the J-20 has been tested around M3 in a wind tunnel.

I has dumb question: If you can M2 without AB, why have AB at all?

 

[Tomboy]

I has dumb question: If you can M2 without AB, why have AB at all?

Manuverbility, especially for sustained turn performance, high climb rate, also quick acceleration, short takeoff etc.

 

[Mearex]

On the other hand, beyond M2.25 the heat will start to degrade aircraft skin as composite materials are actually sort of a glorified plastic. Beyond Mach 2.5 chemical decomposition starts. Theoretically ws15 equipped J20 can fly to M2.8 from some ancient papers, but It's not going to fly at that speed while still being intact. Afterburners will be used extensively during takeoff and during aggressive cranking maneuvers but is basically unnecessary when flying in a straight line.

may I see those papers? Stealth coating aside, I thought DSIs can't go much beyond M2

 

[latenlazy]

may I see those papers? Stealth coating aside, I thought DSIs can't go much beyond M2

Not all bumps are aerodynamically identical.

 

[Alfa_Particle]

may I see those papers? Stealth coating aside, I thought DSIs can't go much beyond M2

Not all bumps are aerodynamically identical.

Plus the DSIs on the J-20/A are allegedly adjustable to a certain extent.