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AOA in slow flight

Scheduled Pinned Locked Moved PA-28R Turbo Arrow III/IV
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  • S Online
    S Online
    Searinox
    wrote last edited by
    #1

    Hey guys,

    just bought the turbo arrow and really like the work done there. However, I experience the same problems as described here: https://community.justflight.com/post/10544

    Made some slow flight tests and the power vs angle of attack (AOA) combinations for everything below 80 knots in landing configuration are very unusual. You need to maintain over half of the elevator axis to keep 75 knts. Same can be seen when I trim it out - the trim scale is over half aft.

    For the tests no specific settings changes were made - everything like after the plane installation and default MSFS flight settings.

    What I did so far:

    • reinstalled the plane
    • all joystick axes are linear and newly calibrated
    • all other mods removed

    Any suggestion? Was there already a solution to this?

    It's kind of feels like that after the first flaps the flight surfaces are just producing drag but no further lift. But thats pure speculation.

    Best

    D 1 Reply Last reply
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    • S Searinox

      Hey guys,

      just bought the turbo arrow and really like the work done there. However, I experience the same problems as described here: https://community.justflight.com/post/10544

      Made some slow flight tests and the power vs angle of attack (AOA) combinations for everything below 80 knots in landing configuration are very unusual. You need to maintain over half of the elevator axis to keep 75 knts. Same can be seen when I trim it out - the trim scale is over half aft.

      For the tests no specific settings changes were made - everything like after the plane installation and default MSFS flight settings.

      What I did so far:

      • reinstalled the plane
      • all joystick axes are linear and newly calibrated
      • all other mods removed

      Any suggestion? Was there already a solution to this?

      It's kind of feels like that after the first flaps the flight surfaces are just producing drag but no further lift. But thats pure speculation.

      Best

      D Offline
      D Offline
      Delta558
      Developer
      wrote last edited by
      #2

      @Searinox
      I just took both the 3 and the 4 for a brief circuit at MToW and the highest trim setting I used was 42% aft, with the stall horn blaring. Stall speed dirty should be around 61kts, Vref is approx 75kts. At 75kts, I was using no more than 20% aft trim with no additional elevator input to maintain a stable approach.

      Using what should be an identical situation to your setup (no changes, all weights and flight settings default) I used 31% aft trim to maintain level flight and a stable approach (both at 75kts), so slightly higher but obviously a slightly altered CG position.

      Not sure why you are having to use over half aft trim, I never go anywhere near that tbh.

      Just Flight FDE developer

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