スクラムジェットエンジンの３分力測定 １）マッハ４から８飛行条件におけるエンジン抗力

Abstract

Aerodynamic performance of scramjet engines was measured by using 0.44-m-long models in a M6.7 wind tunnel. Drags and wall pressure distributions were measured to evaluate the total pressure and friction drag in the engine internal flow. The internal drag of the models with various struts was dicussed. The internal and the external drags, the pressure and the friction drags were estimated. Consistency between the force balance measurements and the pressure measurements was examined. The internal drag obtained from the force balance agreed with that based on the wall pressure measurements.