 temperatur distribut thermal stress model superson wing temperatur distribut thermal stress model superson wing transient temperatur distribut thermal stress ideal wing structur consid hoff torda refer 1 determin effect aerodynam heat heat conduct includ radiat convect effect neglect work differ refer 1 conduct cap web consid temperatur cap calcul spar cap temperatur assum function space time graph temperatur thermal stress distribut present compar refer 1 