大尺度柔性平流层飞艇流固耦合动力学建模与定点保持控制

The large scale flexible stratospheric airship experiences large deformation in station-keeping subject to fluid-structure interaction, which produces effects on aerodynamics, and vice versa. The coupling law between airship deformation and its dynamics is revealed based on the investigation of large displacement of geometry, the interaction of loading-deformation-dynamics. The research results can establish the technique base for dynamics modeling and station-keeping control of stratospheric airship platform.

针对大尺度柔性平流层飞艇在流固耦合效应下飞艇变形与飞行动力学耦合的问题，综合考虑几何非线性大位移变形、外部载荷-柔性变形-动力学耦合等因素，揭示飞艇变形与阻力/升力/力矩/气动导数等动力学的耦合影响规律。研究成果为平流层飞艇动力学建模与定点保持控制设计提供理论基础。

针对大尺度平流层飞艇柔性大变形问题，完成充气压力、吊舱吊挂、空气动力等外部载荷对飞艇柔性变形的影响分析，结合流固耦合计算方法，揭示了外部载荷对飞艇柔性变形的作用途径，以及空气动力与飞艇柔性变形的耦合关系，为后续开展柔性大变形条件下的低阶解析动力学建模、姿态镇定及定点保持控制设计提供基础。