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    AutoCAD 2010/2011/2012 DWG Format

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    New Member
    gobi.kastelic
    Posts: 2
    Registered: ‎01-15-2012

    Plotting an airfoil in AutoCad 2012

    1522 Views, 12 Replies
    01-15-2012 02:22 PM

    Hi

     

    I just downloaded AutoCad so I am very unfamiliar with it but I do need so help witha particular problem.  I need to be able to import the airfoil geometry of a NACA 2412 airfoil.  I know how to get the XY coordinates but I don't know how to import these points (as a .txt file?) into ACAD.  What function would I use?  Spline?  If so how do I get it to draw all the points I have?  I need to then extrude the shape to be able to mill airfoil sections...that part I can figure out....just need to import the points to get a nice curve.

     

    Thanks for any (and quick :smileyhappy: ) help!

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    *Expert Elite*
    Patchy
    Posts: 5,293
    Registered: ‎09-16-2009

    Re: Plotting an airfoil in AutoCad 2012

    01-15-2012 09:17 PM in reply to: gobi.kastelic

    Very easy.

    Open that .txt file, highlight the coordinates and CTRL+C

     

    Go to autocad, type in Spline or Pline command, when it prompts for first point, right click and Paste.

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    New Member
    gobi.kastelic
    Posts: 2
    Registered: ‎01-15-2012

    Re: Plotting an airfoil in AutoCad 2012

    01-15-2012 09:52 PM in reply to: Patchy

    Ok, got it to plot  a good looking airfoil.  Is there a way to scale the airfoil?  Right now it is at an inch long, I'd like it to go to 6 inches while keeping the same shape - is this even possible since I input discrete numbers for each point on the curves?

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    *Expert Elite*
    Patchy
    Posts: 5,293
    Registered: ‎09-16-2009

    Re: Plotting an airfoil in AutoCad 2012

    01-15-2012 10:17 PM in reply to: gobi.kastelic

    Snap a picture or attach your drawing here, I don't want to lead you the wrong way.

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    New Member
    Posts: 2
    Registered: ‎01-28-2013

    Re: Plotting an airfoil in AutoCad 2012

    01-28-2013 06:56 PM in reply to: gobi.kastelic

    i am attaching the coordinates file ......please tell me how to draw in cad with correct dimensions 

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    New Member
    Posts: 2
    Registered: ‎01-28-2013

    Re: Plotting an airfoil in AutoCad 2012

    01-28-2013 06:58 PM in reply to: kick507

    this is diagram of airfoil.

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    *Expert Elite*
    Patchy
    Posts: 5,293
    Registered: ‎09-16-2009

    Re: Plotting an airfoil in AutoCad 2012

    01-28-2013 11:28 PM in reply to: kick507

    Put texts in the correct format as shown, then command SPLINE, when it prompts for starting point, Paste the texts in.

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    Active Contributor
    LaserGuy
    Posts: 36
    Registered: ‎03-24-2011

    Re: Plotting an airfoil in AutoCad 2012

    01-29-2013 06:52 AM in reply to: Patchy

    +1, and my 2 cents

     

    Airfoil.JPG

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    AutoCAD Mechanical 2014
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    Member
    Posts: 4
    Registered: ‎02-08-2013

    Re: Plotting an airfoil in AutoCad 2012

    02-08-2013 12:24 PM in reply to: LaserGuy

    Hi, 

     

    I am in the same situation as the previous post. I have created my airfoil, but I would like to set it to 160 cm, How do I resize the object to scale this new dimension. 

     

    I have the image I created in order to understand where I am at currently. 

     

    Regards, 

     

    JM

     

     

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    Member
    Posts: 4
    Registered: ‎02-08-2013

    Re: Plotting an airfoil in AutoCad 2012

    02-09-2013 04:10 AM in reply to: jemo07

    Hi again, also, when I try to do to a dimension, I can do it for just about anuthing, but not for a Spline, like the airfoil, How do I manage that also?

     

    Thank you all in advance, 

     

    JM

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