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oliv72 avatar image
oliv72 asked oliv72 answered

I need feedback

https://youtu.be/K3UeaO9MG_0

Plane to be downloaded.

aircraft
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oliv72 avatar image
oliv72 answered

Hello, did you assign your Throttle for both engines ?


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oliv72 answered oliv72 commented

The elevators aren t far enough from aerocenter in Flightmodel.cfg, so the aircraft falls from the noze.

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FlyByWire=1 prevents from falling from the noze at low speed.

I thought that distance between aerocenter and elevator was the cause but not so much, maybe with Flybywire=0.

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Mr_LiamT avatar image
Mr_LiamT answered

After restarting the sim, the plane works correctly.

I don't know a lot about flight models, but I'll just list some observations:

  • It accelerates really fast. When I put full throttle on takeoff it blasts right through flap/gear retraction speed.
  • Stall speed is high. The plane will stall at 145kts flaps up and 120kts flaps down.
  • For some reason elevator control is less at full stick backwards than at 80% backwards. Maybe something to do with the front fins? It will also slow the plane down a lot.
  • The landing gear absorbs too much energy. I can slam the plane into the pavement and it won't even bounce.
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oliv72 answered

Thanks a lot for this feedback MrLiam, I think you do know more things than me about flgith models :)

You can play with the table n1_and_mach_on_thrust_table in engines.cfg.

Also with this line:

afterburner_on_thrust_table= 0.0000:2, 0.5000:2, 1.0000:1.2, 1.5000:2

But this line disappears of the engine.cfg file when doing a Save&Resynch.

So we have to edit it independantly and only do a Resync without Saving.

I know it stalls at high speed, i know that a Delta wing is complicated to emulate, but i also know that in real life, Delta wings seem to behave this way without Canards and without electrical control ?

I tried to set Flybywire at 1, the behaviour is better at low speed but after Mach1, the elevators don t react anymore...


I will try to update the contents of the model via Onedrive, and anyone can try to modify parameters, putting the files in MouseAircraft in the SDK.

https://1drv.ms/u/s!AhgqyJYPWSLtgZcVKMsWsqTkU7qj9A?e=QXcDax




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oliv72 answered

I realize that adjusting exactly the wings to this model makes it hard to control.

I need to cheat a bit: setting the aerocenter around -4 or -3 and shortening the root chord to 30. This way it s really easier to control at low speed.

So the distance between aerocenter and elevators matter when flybywire=0.

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oliv72 answered

I`m expermenting this table:

afterburner_on_thrust_table= 0.0000:2.0000, 0.5000:3.0, 1.2000:4.0000, 1.5000:5.0

With these values i can reach Mach 4 !!

Before i was using this table to increase Max Speed:

drag_coef_zero_lift_mach_tab

I would like to know the inifluence of this last table because now with afterburner_on_thrust_table, i can increase speed.

Does it still have a big influence ?

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oliv72 avatar image
oliv72 answered

A little update.

Landing gear animation`s lenght=400.

Respected original drag_coef_zero_lift_mach_tab .

Only playing with afterburner_on_thrust_table .

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oliv72 answered
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oliv72 answered

https://youtu.be/0MMbLDX1n6Y

So, weight repartition seems to be crucial.

CG and Fuel Tank position modified.

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