Please weigh in on a structural question I have.
In the Open Forum there is a thread "Solid Sheet Wings"
http://stunthanger.com/smf/index.php?topic=32251.0 that got me to ponder building a plane with sheet wings. Purposed power to be an unused ST .34 I have.
I am thinking about a profile fuse bi plane with (2) 7 x 36 inch wings. But instead of sheet balsa wings I want to do composite wings. Build the wings with 2 sheets of $tree foam board (paper removed) glued together and then sheet both sides of the wings with either 1/32 or 1/16 light sheet balsa. Scotch spray 77 adhesive to laminate all the sheets together. And add some carbon spars as well as some carbon caps. I have a bunch of Dave Brown .05 Oz./ft Carbon Fiber Tape to use as caps. It is an inch wide but splits to narrower widths super easy. Maybe under the balsa skins to be smoother and less unsightly (even though I know the strongest place would be at the extreme sides I.E outside of the skins).
The foam core would be about 3/8" thick. So the over all thickness would be about 1/2" with 1/16" sheeting or 7/16" with 1/32" sheeting.
The struts would lock the structure together the 2 wings would form.
I know flat plates do not make the best airfoil, but that is not what I am questioning. Rather would the wings be structurally adequate.
The wings would be flapped.
Ken