Dual Waverider to Integrate External and Internal Flows

Abstract

This paper proposes a method of integration of internal and external flow called the dual waverider. A three-dimensional shock structure is designed to simultaneously satisfy the theories of internal and external waveriders. By using the infinite radius of curvature and omnidirectional center of curvature of a planar shock wave, external flows are made to transition smoothly to internal flows in the cross section. Moreover, a compression efficiency factor (CEF) is proposed to integrate internal and external flows in sections along the flow. Different values of the CEF represent internal/planar/external flows. An integration methodology for the dual waverider is then proposed by combining the two flows. By using this design, various structures of the dual waverider are obtained for different conditions. The theory of the dual waverider is also improved to develop one with double internal passages. Three-dimensional numerical simulations were performed on different configurations of the dual waverider to verify the correctness of the proposed design. The results showed good agreement with those obtained during the design process. Research on the aerodynamic characteristics of the configuration indicates that the dual waverider can integrate internal and external flows and can maintain a high lift-to-drag ratio.