Supersonic physic

[Demongornot]

Hi everyone.

 

I have a question or if the answer is "no" a wish list.

 

With the next DCS fighter (who have great chance to be a supersonic aircraft) and the Third Party Projects like the Mig21Bis the F-15E the Eurofighter Typhoon and the F/A-18E we will have a lot of supersonic aircraft.

 

Supersonic flight add several new things like Inertia coupling (the Bell X1 encounter this phenomena and this aircraft flight slower than all aircraft i have quote) and when we cross Transonic speed area somewhere between Mach 0.8 to Mach 1.2 the aircraft loose a lot of acceleration and become unstable like if we open a chute (the pilot feel like if we break in a car) cause of huge drag increase and feel a re-acceleration at supersonic speed, for aircraft who can flight really fast the thermal barrier and the heat by friction its another problems...

And another problem with the F-15 who flight really fast, the friction will increase the thermal signature, the wingtips vortex are also really important, mainly in supersonic flight, its cause of this phenomena that the beautiful XB-70 Valkyrie was lost (an high speed escort aircraft, a modified F-105 was sucked by the vortex and crash by collision with the Valkyrie) and more important than the visual supersonic vapor cone the fact that the shockwave of a supersonic aircraft during a turn (called superbang sonic in french) can kill a people (it can damage another aircraft or kill soldier if the range was close) its rare but when it happen the effect was more important than a low power weapon.

And the fact that a lot of weapon under the wing can't support supersonic flight or/and high G, and maybe the structural damage (but not rupture).

 

Points :

Inertia coupling

Transonic effect

Supersonic effect

Heat effect

Shockwave, vortex and turbulence effect from player to player/bot to player and if possible from player to bot and from bot to bot.

Structural and payload damage/constraints.

Weapon use at supersonic speed simulated.

Low chance to survive at supersonic ejection.

 

All this points are important.

How many are already simulated into DCS World and which of this point are planed to be simulated ?

 

And anyways my wishlist is to have all this point simulated for the first supersonic aircraft plz !

[Exorcet]

The Su-25 experiences transonic stall, and I'm pretty sure that the AFM models inertia around all three axes so that along with individual control surface modeling would account for inertia coupling.

 

I don't think that aircraft in DCS affect the air. One way to test this would be to fly three planes in formation, two ahead side by side about 1-2 wingspan distance from each other and one behind flying inbetween the two ahead. The third plane behind should have lower drag because of tip vortex effects.

[Demongornot]

What you mean exactly by transonic stall ?

You mean transonic airflow on wings or push the aircraft at the edge of the transonic speed at the VNE at Mach 0.80 ?

 

And no, actually the aircraft don't affect the air, Falcon BMS 4.32 do, its actually the single military simulator i know who simulate it, only glider sim simulate this effect and its sad cause its important during refueling or formation flight or even dogfight too cause it can cause loose of control during close dogfight.

But i think vortex effect in our own plane are simulate cause the AFM are really nice and when we stall its greatly reproduce.

Just need to simulate turbulence area between aircraft, jet wash and wingtip vortex.

[Exorcet]

What you mean exactly by transonic stall ?

You mean transonic airflow on wings or push the aircraft at the edge of the transonic speed at the VNE at Mach 0.80 ?

Yes.

 

I don't think the lack of any flow structure following the aircraft is a huge deal. It would be nice, but I think there are a few more important thing to model. DCS seems to have most of the important stuff.