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Flight Model - Flap Pitching Moment Excessive

Scheduled Pinned Locked Moved PA-38 Tomahawk
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  • R Offline
    R Offline
    rnsTitanic
    wrote on last edited by rnsTitanic
    #1

    Hi there,

    Congratulations on an awesome product release! Plenty of hours in the tommy as both a student and an instructor, great to finally have one in the sim!

    The aircraft handles well, however one issue I did encounter is the excessive nose down pitching moment when extending flap. In the real aircraft this is quite a subtle thing. It's even quite hard to demonstrate to a student as the aircraft will typically pitch nose up momentarily before subtly pitching nose down as speed decays.

    Flying an approach in the Just Flight PA38 is unusual as the aircraft runs out of aft trim to fly an approach at 70kts, and even then it still wants to pitch down slightly.

    For reference to the real aircraft, when trimmed for straight and level flight at 90kts, roughly 2 stokes of aft trim is required to trim aircraft for approach descent at 80kts. For our operation we then extend 1st stage flap on base which slows aircraft to 75kts, no trim required here to relieve control pressures. On final extend last stage of flap and drag from flap slows aircraft to 70kts, again no trim required here to relieve control pressures.

    Hence flying an approach at 70kts and running out of trim doesn't make sense to the real aircraft.

    Thanks for hearing me out, I'd be happy to discuss further if it helps in a fix!

    Cheers

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  • W Offline
    W Offline
    Wothan
    wrote on last edited by
    #2

    I also find the pitching moment to be too much - not that I know how the real thing flies.
    You also run out of trim with flaps and low speed.

    F 1 Reply Last reply
    0
  • MarkM Offline
    MarkM Offline
    Mark JF Staff
    wrote on last edited by
    #3

    Thank you for the feedback. We have passed this on to our flight model developer to look into.

    Mark - Just Flight

    Just Flight Development Assistant

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    2
  • F Offline
    F Offline
    FeebleTundra258
    replied to Wothan on last edited by
    #4

    @Wothan
    Agree pitching moment is too much ...... at low speed in landing flare. Real aircraft is more forgiving. Otherwise totally magic sim from Just Flight. Well done.

    1 Reply Last reply
    3
  • RhinozherousR Offline
    RhinozherousR Offline
    Rhinozherous
    wrote on last edited by
    #5

    Would be nice to have less "nose over" when increasing flaps!

    1 Reply Last reply
    0
  • D Online
    D Online
    Delta558 Developer
    wrote on last edited by
    #6

    Already sorted, waiting for the next patch.

    Just Flight FDE developer

    1 Reply Last reply
    3

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