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Old Apr 10, 2012, 04:08 AM
Thermal Wrangler
DrFragnasty's Avatar
Launceston Tasmania
Joined Mar 2004
2,142 Posts
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Ceres Sub-Spar

Just an FYI for those interested in how Jiri Baudis makes his Ceres sub-spars.

Likely made en-masse from a big sheet of 4mm balsa, faced with uni-carbon on one side and light 'glass on the other.

Uni-carbon is laid-up 90 deg to the balsa grain. Don't know about the 'glass bias.

Then cut to suit the depth required and cut so the uni-carbon runs from top to bottom skins and the balsa simply has the grain running root- to- tip.
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Last edited by DrFragnasty; Apr 10, 2012 at 04:09 AM. Reason: The monkey says "boo"
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Old Apr 10, 2012, 08:13 AM
chetosmachine's Avatar
Madrid, Spain
Joined Sep 2004
1,105 Posts
On cyril and fosa, he replaced the balsa by rohacell.
And puts vertical uni carbon on both sides of rohacell.
The sub spar and the flap/aileron spar are made the same way.
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Last edited by chetosmachine; Apr 10, 2012 at 11:18 AM.
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