%A LI Jun, YI Huaixi, WANG Dou, LUO Shibin %T Aerodynamic performance of double swept waverider based on projection method %0 Journal Article %D 2021 %J Acta Aeronautica et Astronautica Sinica %R 10.7527/S1000-6893.2021.24703 %P 124703-124703 %V 42 %N 12 %U {https://hkxb.buaa.edu.cn/CN/abstract/article_18381.shtml} %8 %X The double sweepback layout can effectively improve the aerodynamic performance of the waverider in the subsonic state. At present, the double swept waverider is mainly designed by the osculating-cones method with leading edge-customized. However, there are still some problems in this method, such as complexity of the design process and inconsistency between the actual and the theoretical inlet capture curve. Given that, we take the projection method to design the double swept waverider directly. To systematically research the aerodynamic performance of the double swept waverider obtained by the projection method at the subsonic and hypersonic speeds, the CFD method is applied. Results show that the aerodynamic performance of the double swept waverider designed by the projection method is equivalent to that designed with the leading edge-customized method in the hypersonic state. Moreover, the double swept waverider obtained by the projection method still retains the excellent aerodynamic characteristics of the double-swept waverider, such as the "wave effect" at hypersonic speeds, which causes nonlinear lift at large angles of attack, and the "vortex effect" at low speeds which effectively improves the lift-drag ratio. The results in this paper can provide some guidance for the engineering application of the double swept waverider based on the projection method.