 stagnat point blunt bodi hyperson flow stagnat point blunt bodi hyperson flow purpos paper method calcul devis yield symmetr inviscid hyperson flow stagnat point region blunt bodi problem consid hay approach demonstr hay' valid stagnat point region consid basi construct restrict solut equat present veloc pressur detach distanc vortic valu shock detach distanc bodi pressur coeffici compar experiment data sphere pressur comparison hay theori present repres better approxim newtonian impact theori hyperson mach number conclus possibl refin analysi discuss 