内锥流场参数对定平面形状乘波体性能的影响OA

The straight-shock internal conical flow fields with various wall boundaries are generated by solving the Taylor-Maccoll equation combined with the method of characteristics.Employing the geometric relation in the osculating-cone method,the planform-customized waverider design is achieved using the straight-shock internal coni-cal flow fields.The properties of straight-shock flow fields with different boundaries and pressure distributions were compared.Taking the 3D leading edge of one double swept waverider with wing dihedral as the baseline planform shape,the planform-customized waveriders using the internal conical flow fields with different boundaries are de-signed.Then the effect of the internal flow fields on the waverider performance was analyzed.The results show that the planform-customized waveriders generated from the internal flows with different wall boundaries feature high lift-to-drag ratio.The shock wave positions in their flow fields are nearly identical,indicating promising wave-riding perfor-mance.When the wall boundaries of the basic internal flow fields vary from elevated to descent profile along the axial coordinate,the pressure of the lower surface transitions from increasing to decreasing.The compression ability under the lower surface also decreases,but the total pressure recovery coefficients remain similar.In addition,as the wall boundary approaches a straight line more closely,the flow field uniformity under the lower surface of waveriders is bet-ter,just like that of the basic internal flow fields.