关键词: 跨域变构型, 多点设计, 双层优化方法, 型面优化, 平面形状优化

Abstract: Morphing aircraft can change their aerodynamic shape online according to flight conditions, maintaining ideal aerodynamic per-formance during a trans-domain mission, therefore has become one of the research trends of aeronautics. This paper proposes an optimization method for the aerodynamic shape of trans-domain morphing aircraft aiming for multiple missions. By parameteriz-ing aerodynamic shapes with both online and offline design variables and adopting an inner-outer dual-layer optimization strate-gy, performance improvements have been achieved across various mission profiles. Taking a trans-domain aircraft with variable-sweep wings as an example, the optimization results show that the lift coefficient at Ma=0.4 is increased by 55.03%, and the lift-to-drag ratios at Ma=6 and Ma=10 are increased by 1.69% and 1.68% respectively, and the center of pressure variation is con-trolled within 2% over a wide range of speed, verifying the effectiveness of the proposed method.

Key words: Trans-domain Aircraft, Multi-point design, Dual-layer optimization method, Shape optimization, Planform design.