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针对主动气动弹性机翼(active aeroelastic wing,简称AAW),基于遗传算法发展一种可以同步考虑结构优化和配平关系优化的综合设计方法,并在采用了AAW技术的战斗机的设计中得到了应用。以结构质量最小化为目标,以控制面偏转、铰链力矩、翼根载荷和临界颤振速度为约束条件,在多种平飞滚转机动状态下对战斗机机翼进行优化设计,并与传统的单控制面设计方法进行了比较。结果表明,AAW技术通过多控制面之间的协调偏转,能够充分利用结构柔性,在提高机动性能和减少结构质量方面有明显的优势。
Aiming at the active aeroelastic wing (AAW), an integrated design method based on genetic algorithm is proposed, which can simultaneously consider structural optimization and trim optimization. It has been applied to the design of fighter aircraft with AAW technology. In order to minimize the structural mass, the control plane deflection, the hinge moment, the wing root load and the critical flutter velocity are taken as the constraint conditions, and the wing design of the fighter plane is optimized under a variety of flat-flight rolling maneuvering conditions. Single control surface design methods were compared. The results show that the AAW technology can make full use of the structural flexibility by coordinating deflection between multiple control surfaces and has obvious advantages in improving maneuverability and reducing the structural quality.