Abstract
A comprehensive numerical study is performed for the flowfields associated with multidirectional-curvature waveriders with finlets. This hypersonic vehicle, composed of an airframe and reflexed trailing edge, is developed by means of the waverider concept. The airframe and finlets can he constructed simultaneously by making an appropriate selection of a freestream trailing-edge curve/In this study, a three-dimensional grid system generated by elliptic differential equations is developed. Additionally, the Navier-Stokes equations with a flux-difference splitting numerical method are utilized to simulate the flowfields associated with the design and off-design flight conditions. At the design Mach number 4, the inviscid numerical results are compared with analytical estimates; in addition, the viscous effects for aerodynamic performance are evaluated. Also, an investigation is made of the variation in aerodynamic performance caused by altering the flight Mach number from 2 to 6. Moreover, the influence on aerodynamic performance and stability of the addition of finlets is discussed in detail.
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