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a couple questions

6,942 CooperFilms001  2.0 years ago

What airfoil would be best for my plane? It is a supersonic aircraft.

I know that symmetric is fast and low drag, semi-symmetric is medium for both, and that flat bottom is high drag but high lift.

The problem is, the aircraft lands waaaay too fast than I want it to (nearly 250 knots)

Also, second question…
How do I slow down the acceleration of my plane? It goes from 0 to 1000 KIAS in a couple seconds. Is there a XML thing or something else that can help slow the acceleration without effecting the max speed of the plane?

Also, my wings flex like hell, how do I fix it without changing the weight of the wings? I’ve tried connecting it to other parts already…

Thanks in advance

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    Somehow i got it down to ~200 knots for the landing speed

    Pinned 2.0 years ago
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    Oh, here is how the wing flex looks unlisted YouTube video

    Pinned 2.0 years ago
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    Ok, I timed it… It takes about 10 seconds from throttling up, to hitting 1000 knots

    Pinned 2.0 years ago
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    Ok, it worked perfectly,
    I set the max power to 0.5 and the input to 20, works perfectly

    +1 2.0 years ago
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    @Coop09814 Yep, that will work. It will also create a lot of noise, so I would recommend using lower volume.

    +1 2.0 years ago
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    @TheFlightGuySP ok, here is a quote from u/Panthera-Draco on Reddit:
    “ You could increase the input multiplier to 4 and reduce the power multiplier to 0.25 so that the engine spools up slowly to 4 times its normal maximum yet produce exactly its original amount of thrust at max.

    Note that this will increase the length of the exhaust animation.”

    So I will try it

    2.0 years ago
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    @TheFlightGuySP I drastically decreased the weight (mostly because of the fuel in the wings)

    2.0 years ago
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    @TheFlightGuySP I did fix the speed a bit, it can land around the same as the Concorde (roughly 200 knots)

    2.0 years ago
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    @TheFlightGuySP ok, thanks

    2.0 years ago
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    @Coop09814 I'm sure there is. I'm not sure what that would be, however.

    +1 2.0 years ago
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    @TheFlightGuySP thanks! The wing flex thing helped a lot!


    It’s a small plane tho, so I don’t want any flaps or slats.


    I don’t want to lower the power of the engine, maybe there is an xml code that can lower the acceleration of the engine speed itself?

    2.0 years ago
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    • Problem#1: Flaps/Slats would probably fix that. Symmetric is the general choice for supersonic aircraft but is a bit unstable at high AoA (in my experience). It might also be the position of the CoM.
    • Problem#2: I would use a less powerful engine, and then just fly to higher altitudes for higher speed (this is more realistic).
    • Problem#3: Set the part type to Wing-2 in the XML editor.
    +1 2.0 years ago