| In order
to give the sustainer fins a true airfoil shape. The flywood
core has been covered in "Blue Foam". This foam was then hot
wired into shape. After the fins have been attached to the 7.5"
inside main tube, they will be covered in two layers of 6.0oz fiberglass. |
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 |
Here's a top view
of the fins. In order to give a somewhat sharper edge a 1/16" strip
of aircraft birch was inserted between the two foam pieces. |
|
|
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Looking from the
root edge of the fin, you can see the airfoil shape of the sustainer fins. |
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