i design hangliders now and am no 1 in the world and moyes delta gliders uses my name ..csx. on his world championship gliders and my analysis of the cp skeates luffing theory now used to qualify the nose angle rule which is 130 degrees in flex wings is that the luffing action must out accelerate the glidrers acceleration to keep the lift centroid ahead of the cg or else it will be divergent and that the hinge angle is the critical angle so the luffing action is faster forward and not going side ways and be too slow going forward faster than the glider like a suffer going down a wave and the same action as a whip cracking the speed of sound so what has this to do with ridgid aerodynamics is that the hinge angle on aelerons is the reason air craft flutter and need balancing and damping to stop flutter becase the hinge angle is too wide and the critical angle is 130 degrees any angle less than this will not flutter but after this the luffing action of the flutter is spending to much time going side ways it does not create a lift centroid ahead of the ailerons cg and is divergent like hanglides become .
Posted on Feb 16, 2008, 8:54 PM from IP address 203.15.226.132