Research on Multi-objective Optimization and Uncertainty Analysis of Supersonic Aircraft

As society progresses, the use of supersonic passenger aircraft has gained importance in the minds of people. However, an important challenge that must be addressed before achieving this goal is the reduction of sonic boom and the improvement of the lift-to-drag ratio. Hence, this study integrates the Cartesian CFD solver and the sonic boom prediction program based on the Burgers equation, employing the NSGA-II optimization algorithm for conducting research on aerodynamic/sonic boom optimization design for supersonic passenger aircraft and performing uncertainty analysis on it. Findings from the study indicate that coupling the design of the fuselage and wing plays a critical role in solving both the aerodynamic performance and sonic boom characteristics in supersonic passenger aircraft. The resulting aerodynamic shape after coupling the design of the fuselage and wing led to a significant improvement in the overall performance of the aircraft compared to its initial aerodynamic shape. Additionally, the study found that both the sonic boom and aerodynamic characteristics in supersonic passenger aircraft exhibit clear non-dominant characteristics. The presence of this phenomenon may present various challenges in designing aerodynamics and reducing the sonic boom produced by supersonic passenger aircraft. Additionally, this study utilized uncertainty quantification analysis methods to examine how design variables, including flight state and fuselage-wing configuration, affect the aerodynamic and sonic boom performance. The study revealed that the Mach number had the greatest impact on the aerodynamic and sonic boom performance. Additionally, the study observed that the fuselage-wing design variables demonstrated a similar sensitivity to the aerodynamic and sonic boom performance. In conclusion, the design architecture developed in this paper enables efficient and rapid design of supersonic passenger aircraft. Research findings indicate that the overall performance of supersonic passenger aircraft necessitates a coupled design of the fuselage and wing. Such findings hold immense significance for future in-depth research on the design and optimization of supersonic passenger aircraft.