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Recent content by Rollerblades

  1. Rollerblades

    blue dimension in assembly

    I had an assembly. When I redrew extruded cut in the assembly, the dimension changed to blue instead of pink. I would like to know the difference between blue and pink dimension. By the way guys, I have done my course on CATIA not Solidworks. Thank you.
  2. Rollerblades

    chemical formula of wood

    I would like to know the chemical formula of wood. Thank you.
  3. Rollerblades

    holes in design table

    I have a sheet metal with four holes equally spaced for one configuration and six holes for another configuration. Behind this sheet metal, there is another part with the same number of holes of a different diameter for which I used "convert entities" to have the holes at the same position as...
  4. Rollerblades

    design table in assembly

    How do we make design tables so that the change in configuration in a part changes in the assembly. Thank you.
  5. Rollerblades

    Youngs Laminar Body

    www.bn.com or www.askjeeves.com and type a complete phrase to find bookstores on the internet. Bye!
  6. Rollerblades

    Thick sail

    Do not forget to make the calculation as a thin airfoil.
  7. Rollerblades

    counter rotating props

    That`s a good question because I don`t know how a single engine airplane could be balance in terms of rotating inertia!
  8. Rollerblades

    climb time

    Thank you very much, but I found it. The source of error may come from SFC with the thrust varying with the mach number: how do I take into account this? Thank you.
  9. Rollerblades

    climb time

    Could somebody explain me how to calculate the climb time from the maximum climb rate, because I can't correct my report. Thank you.
  10. Rollerblades

    Winglets

    Relying on a book I read, the induced drag can not be suppressed because it generates lift. So winglets decrease cL and make airplanes fall!
  11. Rollerblades

    truss under bridge

    Thank you, I was talking precisely about suspended bridges with truss under it to stiffen the structure in case of aerodynamic problems.
  12. Rollerblades

    truss under bridge

    I would like to know how long can a span be if the trusses are under de bridge
  13. Rollerblades

    Flap Gaps

    You can find it in "Low speed aerodynamics" book on sale at www.bn.com
  14. Rollerblades

    Winglet effect on wing lift and drag?

    TurboTag, I red a book that says that you cannot eliminate induced drag because it generates the lift. The aspect ratio does not change, it`s the lift coefficient CL which changes. CDi=0 means that CL=0 not AR=infinite (CDi=CL2/(pi*AR)). The author Stepen Dalton received a medal from the...
  15. Rollerblades

    CFD packages

    You have to be careful with CFD software because I don`t know if they now can take into account boundary layer separation!

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