Abstract:
Waverider is an effective configuration for hypersonic aerocraft with high lift-to-drag ratios. But its insufficient effective volume and sharp leading edge lead to difficulties in the engineering application of waverider. To expand effective volume of waveriders, a parametric upper surface design method was created and discussed. The blunt method was analyzed in this work, and the influence of different design parameters of upper surface design on effective volume and aerodynamic performance were discussed. The influence of attack angle and Mach number on the aerodynamic characteristics of upper surface design with the consideration of practical application was also analyzed. The results show that the design method can expand volume effectively. The analysis of flow field indicated that the blunted waverider with upper surface design can maintain the "wave rider" characteristic well. The relationship between the effective volume and the aerodynamic performance is inconsistent, which needs to be considered on the basis of different practical situations. The upper surface design waverider performed well at positive attack angle within limits and Mach numbers in wide range. A new method of upper surface design was proposed and studied about relative scientific problems. Based on the results, some useful advice can be obtained for expanding effective volume of waverider, which may improve waverider from an academic concept into a practical engineering application.