 superson flow blunt bodi superson flow blunt bodi newtonian theori impact pressur calcul forward face bodi move high speed familiar practic calcul nonvisc veloc wall estim rate heat transfer procedur open question heat-transfer rate depend veloc gradient newtonian analysi boundari-layer stabil bodi stabil deriv inevit design proce hyperson missil greater accur aerodynam theori predict happen unfamiliar flight condit extrapol test result design condit 