ORIGINAL: Broken Wings
I've got D&L designs Gizmo Kit that I'm putting together and would like some opinions. It's a high wing constant cord Fun Fly kinda design.
The plans show different leading edge shapes.
W-1 being inboard, W-9 outboard tip rib. The plans reference Extreme Aerobatic L.E. Shape on the outboard wing ribs.
Am I wrong thinking it should be the opposite? "Sharp Leading Edge Inboard"???
They are giving you 3 options for your build...
1 is a constant profile for 1-9 for "sport flying" it is semi pointed
3 is a constant profile 1-9 for "Trainer" that is nicely rounded
2 is for EXTREMEAEROBATICS LE... 7-9 being sharp... (IE LOWERINGthe Critical angle of the wing at the TIPS)
The Key words here are "EXTREMEAEROBATICLEADINGEDGE"
Normally you build washout into a wing to prevent tip stalling.. (but that also reduces the propensity to flick roll)
The sharp leading edge on the outer part of the wing will INCREASE the ease with which it "Flick Rolls" increasing theaircraft's ability for "extreme aerobatics"
you can choose which option you want... Sport flying, trainer or EXTREME Aerobatics, the plans are correct and make perfect sense.
But it may also be a typo and the W7 should be a W1.... Just a thought..