YiQi TANG, Zhancang HU, Xiaoting DING, Xiaogang ZHENG, Chongguang SHI, Yancheng YOU
DOI Number: XXX-YYY-ZZZ
Conference number: HiSST 2024-00164
The planform shape of waveriders is closely linked to their geometric characteristics and aerodynamic performance. However, traditional design methods for planform-customized waveriders are constrained by the osculating cone theory, and the whole basic flowfield needs to be solved before streamline tracing. To enhance design freedom and efficiency, a rapid design methodology for planform-customized waveriders (RPCW) is proposed in this paper. Similar to the osculating axisymmetric theory, the post-shock flowfield is also discretized into a series of osculating planes in the RPCW method. The difference is that there is no longer a need to apply the Method of Characteristics (MOC) to solve the entire basic flowfield before streamline-tracing. The more general geometrical relationships between design curves are revealed, and an approximate analytical method for solving the post-shock flowfield is derived based on the second-order curved shock theory. Numerical results indicate that the RPCW method substantially enhances computational efficiency while maintaining high accuracy. In comparison to traditional MOC-based methods, the RPCW method significantly reduces computation time by approximately 95% while maintaining errors in non-viscous lift-to-drag ratio below 2%, viscous lift-to-drag ratio below 6%, and volume ratio below 0.1%. Furthermore, the influence of incoming flow angles of attack on the aerodynamic performance of waveriders is investigated by viscous numerical simulations. It is observed that under design conditions, the lift coefficient of the waverider exhibits nonlinear growth as the angle of attack increases. The shock effects on the lower surface of the waverider play a crucial role. In general, the method presented in this paper broadens the design idea of the planform-customized waveriders and promote its engineering application.