On Mar 2, 10:05*pm, Greg Arnold wrote:
Interesting -- SH is vacuum bagging the wings, and then curing in an
oven. *I didn't know they were so high tech.



Paul Remde wrote:
Part 1 of that episode is available in the link below. *Start at 5:35 for
the glider part.
http://www.youtube.com/watch?v=lwiF8pi26Nc

Paul Remde

"Craig" wrote in message
...
I just ran across this for those of you who missed this segment on
Discovery Channel.
http://www.youtube.com/watch?v=VxhwkM0ZXRM

Craig- Hide quoted text -

- Show quoted text -

The resins used in our modern gliders must be cured at 60 deg C for 12
hrs or more to achieve their full strength properties. Since you can't
see that the carbon cloth is completely wetted out, vacuum bagging is
used so that a minumum of excess resin is required. Not as low a resin
content as autoclaved prepreg but much less costly in terms of
equipment and tooling required since molds don't have to remain stable
at very high temperatures. Also more practical to field repair due to
materials used.
No axes are required to build a modern sailplane- nor rocks and
chisels.
Cool to see our stuff shown on TV.
UH