Inverse Design Method of Full 3D Waverider Based on Bending Shock Wave Theory

Abstract

The full three-dimensional waverider inverse design method based on the bending shock wave theory, 1) specify the three-dimensional external flow shock wave in the full three-dimensional reference flow field according to the design requirements, and the full three-dimensional external flow shock wave adopts an elliptical or non-axisymmetric shape design; The three-dimensional outflow shock wave is discretized into a series of reference planes, and according to the full three-dimensional outflow shock angle, shock curvature and wave parameters, the corresponding full three-dimensional external compression basic flow field is solved by using the bending shock theory; 3) the full three-dimensional waverider is designed The body captures the profile and performs streamline tracking in the full three-dimensional external compression basic flow field in step 2) to obtain the compression profile of the lower surface of the hypersonic full three-dimensional waverider, and the profile adopts an elliptic curve or a non-axisymmetric shape; 4 ) geometrically construct the hypersonic full three-dimensional waverider based on the following surface compression profile: according to the volume ratio requirements, the upper surface of the waverider is constructed as a plane or a convex surface, and the full Three-dimensional waverider.

Description

technical field [0001] The invention relates to the field of near-space hypersonic waveriders, in particular to a full three-dimensional waverider inverse design method based on the bending shock wave theory. Background technique [0002] The development of near-space vehicles involves national security and peaceful use of space, and is one of the focuses of the current international competition for space technology. World powers represented by the United States and Russia are vigorously promoting their own hypersonic flight development programs (Joseph, M.H, James S.M.Richard C.M., The X-51A Scramjet Engine Flight Demonstration Program, 15 th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2008). When the airflow passes through the shock wave, the pressure can rise rapidly. Since lift is the product of surface pressure differences, pressure jumps are a huge advantage in the design of supersonic vehicles. Therefore, supersonic vehicles ...

AI Technical Summary

Problems solved by technology

At the same time, researchers generally use the traditional characteristic line method to carry out the reverse design of the reference flow field, which is not only complicated in programming, but also poor in stability, which limits the selection range of the basic flow field, thereby reducing the geometric structure range of the waverider

It can be seen that one of the current problems restricting the performance of hypersonic waveriders is the lack of a full three-dimensional waverider inverse design method based on the bending shock wave theory

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