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PMDG 747 HIDRAULICS FLAPALERON NOT GOING DOWN

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    #1

    PMDG 747 HIDRAULICS FLAPALERON NOT GOING DOWN

    Hello, i just notice that when i get to shut down the engines and turn off the hidraulics, the flapalerons won't get down into a resting position. In real life the flapalerons move down into a resting position as the elevators due to the lack of hidraulic liquid when they are turned off. Help please
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    #2
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    Not sure which plane you're talking about because the 747-8 is the only one that has flaperons. The 747-400 does not, it would be the inboard aileron since it doesn't drop with the flaps when they're being used. In any event, I wonder if you have residual hydraulic pressure because from what I have noticed, it takes a bit of time before the elevators droop. As for the ailerons, if I move the controls, they droop right away.
    Captain Kevin

    Kevin Yang

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      #3
      Originally posted by Captain Kevin View Post
      First, PMDG requires you to sign your posts with your first and last name, which you agreed to when you created an account here. Failure to do so can result in posts being removed without warning. You can set up a signature to avoid forgetting by following the instructions here:

      https://forum.pmdg.com/forum/main-fo...pdated-25feb19

      Not sure which plane you're talking about because the 747-8 is the only one that has flaperons. The 747-400 does not, it would be the inboard aileron since it doesn't drop with the flaps when they're being used. In any event, I wonder if you have residual hydraulic pressure because from what I have noticed, it takes a bit of time before the elevators droop. As for the ailerons, if I move the controls, they droop right away.
      Correct, i mean the 747-400 inboard allerons, when i shut down the engines and shut down the hidraulic pumps, the elevators will drop in a while but not the innboard allerons, they keep in the same normal position all the time.

      joseph paramo

      Comment

        #4
        Originally posted by pepo340300 View Post

        Correct, i mean the 747-400 inboard allerons, when i shut down the engines and shut down the hidraulic pumps, the elevators will drop in a while but not the innboard allerons, they keep in the same normal position all the time.

        joseph paramo

        They are also significantly lighter than the elevators which means less hydraulic force required for them to droop. I’m trying to think how often I’ve seen them deflected at all in years of preflights….it’s just not coming to mind.
        Brian Thibodeaux
        ‘Giant’ B747-400/8 Captain
        Typed MD-80, BE1900
        ATP, CFI, MEI
        My Liveries

        Comment

          #5
          Originally posted by Captain Kevin View Post
          First, PMDG requires you to sign your posts with your first and last name, which you agreed to when you created an account here. Failure to do so can result in posts being removed without warning. You can set up a signature to avoid forgetting by following the instructions here:

          https://forum.pmdg.com/forum/main-fo...pdated-25feb19

          Not sure which plane you're talking about because the 747-8 is the only one that has flaperons. The 747-400 does not, it would be the inboard aileron since it doesn't drop with the flaps when they're being used. In any event, I wonder if you have residual hydraulic pressure because from what I have noticed, it takes a bit of time before the elevators droop. As for the ailerons, if I move the controls, they droop right away.
          The flaperons deploy with the flaps (during normal flight / ground operations) on PMDG 777, and 747 when I checked.
          Last edited by von; 28Nov2022, 19:46.
          Vaughan Martell KDTW PP-ASEL

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          • von
            #5.2
            von commented
            28Nov2022, 20:00
            Editing a comment
            Hi Dan,
            Just PMDG or real aircraft for the 777?
          • DDowns
            #5.3
            DDowns commented
            28Nov2022, 20:02
            Editing a comment
            I stand corrected.... B748 and B777
          • Captain Kevin
            #5.4
            Captain Kevin commented
            29Nov2022, 18:45
            Editing a comment
            Vaughan, not the case for the 747-400.
          #6
          Kevin , I said 747 on accident. I should have said 747-8.

          The reply was meant to add the PMDG777 to the list.
          Last edited by von; 29Nov2022, 22:23.
          Vaughan Martell KDTW PP-ASEL

          Comment

            #7
            I think Brian's already covered it, there are plenty of images of parked -8s in the public domain. The outbound ailerons and elevators are drooped, the high speed inboard/flaperon appear not to, so it looks like PMDG have modelled it correctly

            Example:

            https://twitter.com/JetPhotos/status...567104/photo/1
            Last edited by Extra300driver; 30Nov2022, 01:21.
            Adrian Howe

            Comment

              #8
              Originally posted by von View Post
              Kevin , I said 747 on accident. I should have said 747-8.

              The reply was meant to add the PMDG777 to the list.
              Copy. I didn't bother adding the 777 to the list because the question was posted in the 747 forum, and I was trying to figure out which 747 he was referring to. As it would happen, the question was about the 747-400.
              Captain Kevin

              Kevin Yang
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