I mean, it *is* possible, just not necessarily meaningful. Official top speed specs rarely indicate actual top speed attainable for planes and can also be somewhat situational depending on flight conditions like altitude and temperature. The J-20 could very well reach Mach 2.5 or even Mach 2.8 but its engines might get fragged doing so if its skin doesn’t go first. This entire top speed size measuring context isn’t even meaningful to air combat. The only utility going that fast has for a fighter is to escape a missile or a combat zone.
J-20 5th Generation Fighter VII
- Thread starter siegecrossbow
- Start date
- Status
Well, in a video released by the People's Daily in 2018, it was stated that the J-20 combat cruiser can fly 52 kilometers per minute. I don't know how reliable it is.
0:53
As for the data provided at the air show, I think it is a rough number.
Even if the airframe and engines were able to support such a speed, it is highly questionable whether the RAM coating would not degrade to the point where the aircraft’s RCS is permanently compromised and requires a total overhaul.
What are the advantages of a low supersonic flight profile in modern BVR combat?
Agreed, but if you go by some "nerds" or lunatic fan-boys, the J-20 features a secret movable DSI, which cab adjust its shape for high supersonic speed, is using a serial WS-15 since day one entering service with more than 245 kN ... and so on!
These assumptions about DSI are far too simple. DSI performance parameters are variable based on inlet shape (of the bump itself, inlet lip, and inlet throat). Advances in computational flow dynamics can help expand their performance envelope. so their optimizable ranges are not as set as common perceptions think. Furthermore, downstream inlet geometries and other potential features that aren’t visible like bleeds can also factor in inlet pressure recovery at different speeds. The mach 2.0 efficiency limit was very specific to early published testing of the F-16’s experimental DSI and may also apply to very specific design choices to the F-35, but we don’t actually know what speed range the J-20’s DSI is optimized for or what other features may impact the J-20’s total inlet recovery like those hexagonal features on the sides of the inlet that may be variable bleeds or air intakes. The arguments about DSI speed limits are a lot like the arguments about canards and stealth. They’re shibboleths built on marketing claims and shallow anecdotes and not any technically determined details.Agreed, but if you go by some "nerds" or lunatic fan-boys, the J-20 features a secret movable DSI, which cab adjust its shape for high supersonic speed, is using a serial WS-15 since day one entering service with more than 245 kN ... and so on!
SteelBird
Colonel
Did they say J-20 can take off and land vertically?Agreed, but if you go by some "nerds" or lunatic fan-boys, the J-20 features a secret movable DSI, which cab adjust its shape for high supersonic speed, is using a serial WS-15 since day one entering service with more than 245 kN ... and so on!
Energy maneuverability is important for maximizing missile pk and minimizing that of the adversary's.
- Status