 calcul deriv crop delta wing subson lead edg oscil superson airstream calcul deriv crop delta wing subson lead edg oscil superson airstream lift pitch moment full-span constant-chord control hing-moment deriv crop delta wing describ harmon plung pitch oscil small amplitud low-frequenc paramet superson air stream assum wing subson lead edg wing thin mach number superson permit linearis theori express deriv coeffici delta wing aspect ratio 1 8 taper ratio avalu tabul mach number 1 1 1 15 1 2 1 3 1 4 1 5 1 6 1 944 