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Quote: Originally Posted by ozzietx |
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I just found this thread. Very interesting.
I won't be doing a turboprop anytime soone, but am interested in the
wing construction. I am going to be building a 30% Yak 54, and might
be interested in using this method for the wings.
I noticed there is not much detailing on the leading edge , trailing edge, or
hinging construction. Is that because you are still waiting on materials?
I do have some questions, that probably will reflect my ignorance.
I have not found the extruded foam to be super rigid. It seems like it
might be easy to build a wing that is out of alignment. How do you guarantee a straight wing? How do you set up the templates on each end to insure accuracy?
Do the wing skins glue well to the foam?
Is ther a significant weight savings with this method?
I don't want to hijack this thread with questions about the construction.
Is there somewhere that might have more info on this method?
Thanks,
Bryan |
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Hi Bryan, no problems with your questions...
Actually this is the best way to build the straightest wing possible.
If you go back some pages as I am cutting the airfoil, you will see that the foam is boxed in so nothing moves, then you put the stringers, wng tube, and everything else that has to go in before you sheet this half, once this is done, then you cut the other half with everything in place.
I use carpenter's white glue to glue everything on the foam and yes it is plenty strong.
As for the leading edge and trailing edge and ailerons, I am waiting for the sheeting material which they told me it should be in within a day or two,
As for weight difference, I have not done two identical wings , where one is this method and the other is solid foam, so I can't answer your question, maybe Jack or Scott can jump in with this ..
Also don't use the white foam as this will not be strong enough but you can use the pink or blue foam.
Roger