I've been thinking a lot about a folding high wing lately. My idea is Grumman Sto-wing inspired. Fold the wing down and back. Lock in place with a single pin at the rear spar. Should be easy to do alone.I worked on the wing fold models for the Ranger for a few hours before I realized that what I was drawing wasn't going to work :ermm: ...oh well. there's lots of ways to do it. ...maybe VB's "rope trick" wing fold idea (at least I think it was VB's)
Have the horizontal stab be far enough back that it doesn't have to come off and short span enough that you can trailer it with the stab attached (leads to low aspect ratio).
Have the full span flaperons driven by pulleys lined up with the fold axis like this (http://1.bp.blogspot.com/-5XWjXMsPetY/TZOgmi4AncI/AAAAAAAABFc/dHWOFWOweWs/s1600/TBF+Aileron+Control+Pulleys+2.jpg) so they never need to be disconnected and can't be reconnected wrong.
The strut also stays connected. Have the lower and upper strut rotation axis meet at a 90 degree angle on a point that is on the main fold axis. This does mean that the strut bottom and wing fold need to be set out from the fuselage enough to let the wing fold down.
I'm not good at drawing pictures, so am planning on making a small scale model to test the fold geometry. Not sure when I'll get around to that. Here is the napkin sketch I have been using so far:
Problems I haven't figured out yet: It looks to me like the structure will be statically indeterminate with the strut in place, but not so if done as a cantilever. It should be conservative to calculate the loads on the rear spar/locking pin as if the strut wasn't there, and the strut as if the rear pin was taking only the torsion/drag-antidrag loads. However, would this then end up being heavier than just making it cantilever in the first place? I've only read a little on structures so would need to study more before I could answer this one.
Don't want to hijack this great thread, so if anybody wants to discuss this napkin sketch in more detail let me know and I can start a new thread.