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We use model cars (various sizes and models available), to illustrate
aerodynamics and eco-friendly car shapes/sizes. Then we glued the model
cars to a flat wood stand, and then dip/paint the entire model in a
thick poly coat. All this has made for a sturdy model in a wind tunnel.
After the poly dried, we went ahead and spray painted different cars
different colors, and the paint doesn't wear off much at all for us. If
this is a big concern about the paint, use a primer spray coat first.
We might have to touch up the paint about once every year or two.
--Jeff--
Jeff Rosenblatt
Director of Science City
Union Station
ph: 816-460-2218
email: [log in to unmask]
-----Original Message-----
From: Informal Science Education Network
[mailto:[log in to unmask]] On Behalf Of Anna Grace at
Explorit
Sent: Thursday, June 18, 2009 4:50 PM
To: [log in to unmask]
Subject: Wind tunnel shapes
ISEN-ASTC-L is a service of the Association of Science-Technology
Centers
Incorporated, a worldwide network of science museums and related
institutions.
************************************************************************
*****
I hope someone can help.
We have a small wind tunnel with shapes that fit on a sled in the
test section. We have used styrofoam for the shapes, but they don't
last very long. We tried coating the styrofoam with foam coat, which
helped extend their life, but they are still getting really beat up.
I was wondering if anyone else has a similar exhibit or any
suggestion on what material we can use for durable, lightweight
shapes. Does balsa wood hold up?
Thanks,
Anna
Anna Grace
Exhibit Coordinator
[log in to unmask]
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