 superson flow slender point wing ?similar? cross section lift superson flow slender point wing ?similar? cross section lift theoret work slender point wing lift co-ordin extend wing consid point plan form shape provid trail edg straight unswept root profil cross-section shape arbitrari provid wing descript diamond parabol biconvex instanc geometr chief aim work find wing simpl geometri low wave drag pressur distribut serious viscou effect wave drag pressur distribut calcul slender-wing theori gener formula simpl instruct wave drag pressur distribut emphasi root pressur distribut number wing special interest present discuss 