 procedur calcul flutter high superson speed includ camber deflect comparison experiment procedur calcul flutter high superson speed includ camber deflect comparison experiment method high superson mach number describ calcul flutter speed wing camber deflect mode normal coupl vibrat mode wing deriv equat motion chord deflect vibrat mode approxim polynomi wing control surfac carri extern store aerodynam forc store present aerodynam forc assum act wing piston theori quasi-steadi form theori two-dimension steadi flow airfoil shape thick effect account analysi method calcul flutter speed wing test mach number 1 3 3 0 comparison calcul experi flat-plate 60 45 delta wing untap 45 sweptback wing 