Anyone have a GA37A315 file for solidworks?

Discussion in 'Aircraft Design / Aerodynamics / New Technology' started by Staggermania, Jan 26, 2020.

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  1. Jan 27, 2020 #21

    blane.c

    blane.c

    blane.c

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    That looks wrong.

    As in not good.
     
  2. Jan 27, 2020 #22

    Staggermania

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    I figured out that the txt file cannot be open on the desktop when trying to load into Solidworks.....ooops:)
    Anyway, here is what I came up with. Ive cheked the data from the book to my txt file and it looks correct, although this wouldn't be the first time I missed something obvious. Looks like there may be an error in the data points in the book? ga37a315.jpg
    I'll have to go through it and take a look.
     
  3. Jan 27, 2020 #23

    blane.c

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    I made a few of those.
     
  4. Jan 28, 2020 #24

    blane.c

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    GA30-618-1A a.png

    GA30-618 (Riblett)
     
  5. Jan 28, 2020 #25

    Geraldc

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    On airfoiltools.com once you find your selected airfoil you click the link to airfoil plotter and the linked page has an editing box for your airfoil.You can set chord length etc then save as csv list of co-ordinates.Open your download in wordpad or any word editor (not excel) and copy the co-ordinates and paste them in your drawing program.
    upload_2020-1-28_19-30-16.png
     
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  6. Jan 28, 2020 #26

    Geraldc

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    Here are the co-ordinates in wordpad ready to copy.
    His file is as downloaded from Airfoiltools as a csv file.
    No messy excel steps.
    upload_2020-1-28_19-35-5.png
     
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  7. Jan 28, 2020 #27

    Geraldc

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    Here is an airfoil in qcad.The spline tool was selected and the co-ordinates just pasted in the box at bottom left
    that says next vertex.Or in some cad programs spline point to point.
    So from airfoil on net to drawing program on computer in a matter of minutes.
    upload_2020-1-28_19-39-24.png
     
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  8. Jan 28, 2020 #28

    Staggermania

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    I had one number transposed. Fixed it. Thanks for all the help, y'all:)
     
  9. Jan 28, 2020 #29

    Hot Wings

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    Thanks for the tip on the .CSV files from that site. It does save a step or 2!

    However for SW it still means a trip through Excel to add the third row of ordinates for 3D and then renaming the *.csv file extension to *.txt so SW will recognize it. You can add all the zeros by hand - BTDT - don't want to again.:eek:
     
  10. Jan 29, 2020 #30

    Grok

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    I'm a little late to the discussion, but this thread on HBA has a spreadsheet or python script to generate the Riblett coordinates. The output from either either is selig format and needs only minor massaging to get it to load into almost any CAD program. Your choice as to whether you modify the output by hand or by script.
     
  11. Jan 29, 2020 #31

    Staggermania

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    That is awesome! I did not come across it during my search.
    I was actually thinking of creating a spreadshhet to do the same thing, although mine would not have looke so good, I'm sure.
    Thanks.
     
  12. Jan 29, 2020 #32

    simflyer

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    Does anybody have Harry Riblett book with GA37U-A315 version of airfoil? I found many versions without U letter.
    Airfoil coords are written in different formats according aerodynamic softwares and developers as Lednicer, Selig, Drela, Roncz ...
     

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  13. Jan 29, 2020 #33

    blane.c

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  14. Jan 30, 2020 #34

    Yves

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    Hi,
    maybe this spreadsheet could be of interest to you...
    There are DXF and Rhino files ready to import in SolidWorks in the ZIP, (smoothed a bit, the real numbers don't match a perfect line) .
    If you need other type of files or Ga airfoil, let me know.

    Regards.
    Yves
     

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  15. Jan 30, 2020 #35

    simflyer

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    Nope, it's contraproductive to buy it oversea, as I have few other editions of this book and this edition probably doesn't including U version. I only want to compare airfoil version with U to version without U, if someone share coords of U version of airfoil - GA37U-A315.
     
    Last edited: Jan 30, 2020
  16. Jan 30, 2020 #36

    blane.c

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    Just guessing as no "U" stuff

    IMG_2124.JPG IMG_2125.JPG IMG_2126.JPG IMG_2127.JPG IMG_2128.JPG IMG_2129.JPG
     
  17. Jan 30, 2020 #37

    blane.c

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  18. Jan 30, 2020 #38

    simflyer

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  19. Jan 31, 2020 #39

    blane.c

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    There is an edition available on Abe books that they want $131 and change for, it is likely the wrong one too but you can ask.
     
  20. Feb 11, 2020 #40

    simflyer

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    I asked Aircraft Spruce and they asked supplier and found nothing :-( Source could be owner of red edition with GA37U-A315 or somenody who was around Harry Ribblet.
     

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