Aerothermal Enhancement of Hypersonic Waveriders Using Sonic Jets and Surface Shaping

What is it about?

Waveriders are high-speed aircraft designed to “ride” their own shock waves to fly efficiently at hypersonic speeds. While this improves performance, it also causes extremely high heating near the nose of the vehicle, which can damage materials and limit how long the aircraft can safely fly. In this study, we tested a new way to improve both performance and safety at the same time. We injected a small jet of gas at the nose of the vehicle to push the shock wave and the sonic boundary slightly away from the surface, which helps reduce heating. We also reshaped part of the vehicle’s surface so that the airflow can gently spread out, lowering drag and helping the vehicle generate lift more efficiently. Computer simulations of flight at six times the speed of sound show that this combined approach can reduce intense local heating while maintaining or improving overall aerodynamic efficiency. These results suggest that combining smart flow control with careful shape design could make future hypersonic aircraft safer, more efficient, and more practical for long-duration missions.

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