一 种 先 进 超 声 速 民 机 低 声 爆 高 效 气 动 布 局 设 计

The design of low sonic boom high efficiency aerodynamic layout is one of the most important key technolo⁃ gies for supersonic civil aircraft. Based on the inverse design method of sonic boom minimization theory，this paper proposes an advanced supersonic civil aircraft low sonic boom aerodynamic layout using the aft-body design based on wave system beneficial interference and the mixed credibility anti-design method based on the parameterized near-field overpressure signal，and analyzes the effect of each step of sonic boom reduction and the whole sonic boom blanket. Then，the effects of flying altitude，Mach number and wing swept angle on the sonic boom loudness of the aerody⁃ namic layout are studied. Finally，the effects of flying altitude and Mach number on the aerodynamic characteristics of the layout are examined using CFD numerical simulation method. The results show that the anti-design method based on the sonic boom minimization theory can reduce the ground perceived loudness in decibel by 6. 54 PLdB，while the aft-body design method based on the wave system beneficial interference and the hybrid reliability inverse design method of parameterized near-field overpressure signal can further reduce it by 0. 97 PLdB and 4. 04 PLdB，respec⁃ tively. Reasonable match of the flying height and Mach number can effectively reduce the ground perceived loudness in decibel. Reasonable selection of the flying height and cruise Mach number can effectively improve cruise efficiency. This study has certain engineering value for both aerodynamic layout design and aircraft conceptual design of super⁃ sonic civil aircraft.