ORIGINAL: Mike SVOR
so you are saying that a plane with perfectly flat wings or perfectly symetrical wings wont fly?
remember now, if it's a symetrical airfoil, the bottom would cancel out the top of the wing if this theory was true about vacuum causing lift.
and yes, I have tried flying without the top of a wing before.
Great Planes Trainer 40. I removed the entire top monocote and flew it with just the bottom monocote in place.
Yes, that's exactly what we are both saying.
Unless you give it an angle of attack, thereby providing a pressure differential.
Some say it's the drop in pressure over the wing (Burnourley - how is that spelt?) or rise in pressure under the wing (Newton -much easier to spell his name)
There is apparently an excellent book around called 'Model Aircraft Aerodynamics' which I hope to locate one of these days myself.