折叠式变体飞行器轨迹优化及控制分析

针对临近空间高超声速飞行器存在的问题，设计了一种折叠翼飞行器，可以通过折叠机翼来适应各种飞行状态，保持最优的气动特性。并针对临近空间滑翔式高超声速的特点，采用高斯伪谱法对固定翼飞行器和折叠翼飞行器的轨迹优化，通过将折叠翼飞行器与传统固定翼飞行器在射程能力、规避热流能力方面进行对比，提出了一种综合目标的轨迹优化思想。设计的折叠翼飞行器相比传统固定翼飞行器性能更加优越，更适合临近空间环境，提高了17.67%的航程，减少了热流率峰值的35.72%，并通过控制系统的设计和仿真加以验证，仿真结果表明变体飞行器机动能力相比固定翼飞行器有了显著的提高。

Trajectory optimization and control analysis of folding wing aircraft

In view of the problem of hypersonic aircraft in adjacent space, a folding wing aircraft was designed, which can adapt to various flight states and maintain the optimal aerodynamic characteristics. According to the characteristics of hypersonic glide in adjacent space, Gaussian pseudo-spectral method was used to optimize the trajectory of fixed-wing aircraft and fold-wing aircraft. By comparing the capability of range and the ability of avoiding heat flow of fold-wing aircraft with that of traditional fixed-wing aircraft, a trajectory optimization idea of comprehensive target was proposed. Compared with the traditional fixed-wing aircraft, the designed folding wing aircraft has better performance and is more suitable for the adjacent space environment. It improves the range by 17.67% and reduces the peak heat flow rate by 35.72%. It is verified by the design and simulation of the control system. The simulation results show that the maneuverability of the variant aircraft is improved significantly compared with that of the fixed-wing aircraft.