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        Help! Aerofoil templates?

#1 Anjan Babu Feb 23, 2012 10:09 AM

Aerofoil templates?
 
I built a 60'' electric sailplane and it was quite successful (I crash landed it on its third flight, though:D)
Now, I decided to step into powered flight, I have a long-time interest in 'flying wings' so I'm planning on building one. I did some research and found that MH60 airfoil is specifically improvised for tail-less aircrafts, where/how do I get the aerofoil templates? I found a site that provides the aerofoil coordinates in XML format, but I don't know how to get the profile/shape of the foil using those coordinates and since my design-in-mind is swept-wing design, I'll need different sizes of the wing rib templates. I'm not too sure about how to accurately scale the aerofoil templates to different sizes, any special softwares to do it?

#2 whitecrest Feb 23, 2012 11:35 AM

I'd recommend Profili. It's a free program that has a large airfoil database. You can modify an airfoil and export to CAD programs to complete your design. It will also generate a set of airfoils for a tapered wing.

#3 eflightray Feb 23, 2012 11:39 AM

This show a picture of it, you could always right-click on it and do a Save Image As......

Then print it out at whatever scale you want.

http://www.mh-aerotools.de/airfoils/mh60koo.htm

#4 Anjan Babu Feb 23, 2012 11:50 AM

Quote:

Originally Posted by eflightray (Post 20835110)
This show a picture of it, you could always right-click on it and do a Save Image As......

Then print it out at whatever scale you want.

http://www.mh-aerotools.de/airfoils/mh60koo.htm

That's the site I was referring to, for the coordinates. My question is how do I use the coordinates to create the profile and scale the thickness and length of the profile accurately for different sizes needed for tapered wings?
I tried scaling the profile in Photoshop, but its not accurate at all, ends up with wrong thickness and length.

#5 Anjan Babu Feb 23, 2012 11:52 AM

Quote:

Originally Posted by whitecrest (Post 20835079)
I'd recommend Profili. It's a free program that has a large airfoil database. You can modify an airfoil and export to CAD programs to complete your design. It will also generate a set of airfoils for a tapered wing.

Thanks, man.
I don't know to work on any CAD programs, but I'm pretty good with Adobe Photoshop, does it help?

#6 whitecrest Feb 23, 2012 12:23 PM

1 Attachment(s)
Quote:

Originally Posted by Anjan Babu (Post 20835223)
Thanks, man.
I don't know to work on any CAD programs, but I'm pretty good with Adobe Photoshop, does it help?

I think it could. Here's an MH60 sequence from Profili2 that I transferred using a screen-capture program. You should be able to transfer it to Photoshop for your design.

#7 Lnagel Feb 23, 2012 04:09 PM

Quote:

Originally Posted by Anjan Babu (Post 20835223)
Thanks, man.
I don't know to work on any CAD programs, but I'm pretty good with Adobe Photoshop, does it help?

Photo Shop is a rastor graphics program. To use the actual coordinates to accurately draw and scale the airfoils requires a vector graphics program such as one of the many CAD programs or something like CorelDraw or Adobe Illustrator.

With Photo Shop you are limited to importing a drawing created from the coordinates in a vector graphics program like the one drawn in Profili that whitecrest provided you. You then have to use rather crude scaling methods to resize as best you can.

Larry

#8 TomM Feb 23, 2012 05:08 PM

Get Profili for tapered flying wings. It'll to every different size rib in the taper, keeping the spar locations and sizes constant. It prints the full size templates out or exports them into a cad program.
They also have a nice CAD program called DevCad.


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