AVL Tutorial (2) - Model your Airplane

แชร์
ฝัง
  • เผยแพร่เมื่อ 12 พ.ย. 2024

ความคิดเห็น • 29

  • @nawfhou9223
    @nawfhou9223 2 ปีที่แล้ว +1

    Great Video series @Benjamin Kelp

  • @albelnoxroxursox
    @albelnoxroxursox ปีที่แล้ว +2

    Hi, these were great videos. I have a problem - when I open the geometry window, keystroke mode does not work even though I have the cursor in the window when I hit LRUD. The picture does not rotate at all. I don't know what to do; it seems to work perfectly fine for those doing the tutorials on TH-cam. Do you have any idea what might be causing this issue?

    • @BenjaminKelm
      @BenjaminKelm  ปีที่แล้ว

      Sorry, no idea. Have you "clicked" and activated that geometry window?

  • @maurocanto9845
    @maurocanto9845 4 ปีที่แล้ว +2

    Useful video, thank you, could you upload part 3? I'm having trouble when running. Regaardsss!!!

    • @BenjaminKelm
      @BenjaminKelm  4 ปีที่แล้ว

      Hey Mauro, thanks for the feedback. Part 3 is upcoming.

  • @mustafamert7008
    @mustafamert7008 11 หลายเดือนก่อน

    Hello , how can i make my control surface to be replaced by angle.

  • @andreaparmegiani4067
    @andreaparmegiani4067 9 หลายเดือนก่อน

    Hi, i was wondering if AVL can take as an import an .stl or some form of CAD file generated in a CAD software (i.e. Rhinoceros) or if the only way to import a geometry is through the avl geometry file.

  • @kurtcobainsr
    @kurtcobainsr 4 ปีที่แล้ว +2

    Great video! Very useful!

  • @dleojl
    @dleojl ปีที่แล้ว

    Hello, may I know if it is possible to model a V-tail in AVL? and if so how would you go about doing it? Thank you

  • @nitheshkumar9886
    @nitheshkumar9886 2 ปีที่แล้ว +1

    hello sir, have a question regarding the drooped wing. if the wing is divided into n sections for instance n=10, from n=8, have to droop the wing. so how to do that in AVL, sir?

    • @BenjaminKelm
      @BenjaminKelm  ปีที่แล้ว

      Consult the manual - it's possible to set an incidence angle for each section.

  • @tifosaurus
    @tifosaurus 3 ปีที่แล้ว

    Hello! Thanks for the video. In the Control declaration, pls explain usage of XYZhvec.

    • @BenjaminKelm
      @BenjaminKelm  2 ปีที่แล้ว

      It gives you the hinge vector. However, in my experience it doesn’t really matter - seems AVL hasn’t implemented this for the standard use case.

    • @tifosaurus
      @tifosaurus 2 ปีที่แล้ว

      @@BenjaminKelm Thanks for your answer. However, it does matter as a declaration. If you put another declaration instead of 0.0.0., you obtain different stability derivatives. I have checked it. I don' t know what the usage in declaring a hinge vector different than that of the real hinge line would be, however. That's why and as per common practice, I always declare the vector along the hinge line (0.0.0.) and thus obtain the stab. Derivatives as they should be.

  • @nehisinha1816
    @nehisinha1816 2 ปีที่แล้ว +1

    Can you please explain what non unity Gain values physically represent for control surfaces like elevons? And how do you find these values for a model?

    • @BenjaminKelm
      @BenjaminKelm  2 ปีที่แล้ว

      Gains are just simple multipliers to the control surface input. Mainly interesting for mixing different control surfaces. Hope that helps

  • @faisal1934
    @faisal1934 3 ปีที่แล้ว +3

    I am having a weird problem that I cant really fix. whenever i tried to load the file that i created for my designed plane, AVL just shuts down. if anybody knows what exactly is the problem please answer this comment

    • @krystofbednar7534
      @krystofbednar7534 3 ปีที่แล้ว +1

      Hello, I've just started to use AVL but it seems to me that you are running AVL directly and not from CMD. Try to run it from CMD. AVL might still crash but CMD will stay open and will show you the errors. The same thing as you describe was happening to me. I've changed the values of Nchord, Cspace Nspan Sspace (distribution of vortices) through trial and error.
      values which worked for me 7 1.0 30 0.0 ! Nchord Cspace Nspan Sspace

    • @BenjaminKelm
      @BenjaminKelm  ปีที่แล้ว

      Sometimes this can happen (under windows) if the file was not set up properly (like having TABS in there).
      Also these top declaration might cause problems (Under Windows) if they are not defined as floats (0.0 not 0)
      Example .avl file:
      Bubble Dancer RES
      0.0 Mach
      0 0 0.0 iYsym iZsym Zsym # 0 instead of 0.0 might cause an issue in Windows.
      1000.0 10.0 116.6 Sref Cref Bref
      Just try to keep an eye out for that.

  • @joshuamadero4508
    @joshuamadero4508 4 ปีที่แล้ว +1

    Much appreciated!

  • @alpergozen5231
    @alpergozen5231 3 ปีที่แล้ว

    How can I calculate incidence angle from the sketch of wing?

    • @BenjaminKelm
      @BenjaminKelm  ปีที่แล้ว

      Just see what angle the skeleton line of the profile has compared to the x-axis of your plane. That might not be well defined - that's why we talk often about "incidence angle difference" between wing and tail surfaces.

  • @goldenfang57
    @goldenfang57 3 ปีที่แล้ว

    When changing the values in the Supergee.avl file, can we work in any unit system of our choosing?

    • @BenjaminKelm
      @BenjaminKelm  2 ปีที่แล้ว

      Yes, the units are typically defined in the .mass file

  • @fabioli96
    @fabioli96 4 ปีที่แล้ว

    Very useful, thanks!

  • @valeriasainez957
    @valeriasainez957 4 ปีที่แล้ว

    How to make cp 30 degrees from 25% of the root chord???

    • @BenjaminKelm
      @BenjaminKelm  ปีที่แล้ว

      What do you mean by cp 30 deg?