中文摘要：

为估算高超声速类乘波体飞行器的纵向气动力,以三角形面元逼近飞行器外形,根据飞行器迎/背风面情况分别采用达黑姆-巴克法、普朗特-迈耶耳法、切锥法和膨胀波方法计算无粘气动力;通过经验公式估算粘性阻力,并考虑飞行器主要部件之间的气动干扰情况,计算了翼片之间、翼身之间的气动干扰因子,得到整个飞行器的气动力。为验证该方法,以某飞行器为例进行了计算,计算结果与CFD吻合。

英文摘要：

To estimate longitudinal aerodynamics of quasi-waverider vehicle （QWV） in hypersonic speeds, we use triangle surface element to approach the vehicle＇s shape configuration, and adopt Dahlem-Buck formula, Prandtl-Meyer formula, tangent cone formula and expansion wave formula respectively to calculate its inviseid aerodynamics according to windside or leeside status. Following, we calculate the viscid drag with experiential formula. Finally, the aerodynamic interactions of main parts of QWV are considered by factors between body and horizontal wings, between horizontal wings and sideling wings. To validate the engineering method, a certain QWV is computed and the results axe compared with CFD results.