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Old Sep 17, 2012, 01:24 PM
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Joined Sep 2012
4 Posts
Wind Tunnel

Hey everyone,
I have been contracted the build a wind tunnel for my old high school and I don't know where to begin. I was thinking about using an electric motor from a model airplane but I am new to them so I don't know how to go about picking one out. In a perfect world I would need the air to go around 200mph through the tunnel, but to be honest I think I can get away with 50mph. In addition I was thinking about using a 12 inch prop due to the fact that the inside of the wind tunnel is 12", is this the right thinking or should I use a smaller prop and allow the air to move out to fill the volume? Any help would be much appreciated.
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Old Sep 17, 2012, 01:30 PM
Redacted per NSA "suggestion"
dedStik's Avatar
United States, VA, Virginia Beach
Joined Feb 2012
5,487 Posts
Try having a look at some other designs.

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Old Sep 17, 2012, 02:17 PM
nicoyenny's Avatar
USA, CA, Cypress
Joined Jun 2008
1,463 Posts
Use a leaf blower motor and an AC drive to regulate the motor speed, not really too complex.
For the tube you can use a piece of clear pipe, the hardest part will be finding the inlet bell ...
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Old Sep 17, 2012, 02:47 PM
An itch?. Scratch build.
eflightray's Avatar
South Wales U.K.
Joined Mar 2003
14,397 Posts
Also remember to 'suck' the air through the wind tunnel, it give cleaner air flow. Blowing air into a wind tunnel with a prop will give horrible turbulence.
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