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Wing Spar - design / bonding pultrusions

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Foundationer

Well-Known Member
Joined
Nov 29, 2016
Messages
246
Location
London
I have a quick question: is the attached basically the best / most foolproof way of doing things?

Red - Pultruded carbon strip spar cap already bondedspar.png.
Green - PVC Foam
Black - continuous wrap of carbon overlapping for an inch or so in the middle of the shear web.

And also -bonding pultruded strips. Is the process basically:
1. Cut to length, sand ends to make smooth step down
2. lightly Key with abrasive
3. wipe with acetone
4. Pure epoxy or epoxy and flox? Which is best?
5. Vac down (in an aluminium angle with peel ply both sides?)
 
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