| 摘要: |
| 以现有空中发射运载火箭“飞马座”(Pegasus)为研究对象，研究了空中发射运载火箭的弹道优化设计方法。在建立的空中发射运载火箭动力学模型的基础上，考虑空中发射火箭独特气动外形，设计发射全过程的飞行控制模型；给出了使用遗传算法(GA)筛选弹道优化问题全局最优初值，并交叉运用起作用集算法(ASM)与内点法对GA算法获得的初值二次寻优，从而获得空中发射火箭弹道的分级优化设计方法，另与“飞马座”空中发射运载火箭的弹道数据对比，验证了该分级优化方法相比传统弹道优化设计方法，适用的目标轨道范围广阔，发射位置灵活，能够更大程度挖掘空中发射运载火箭的运载能力。 |
| 关键词: 空中发射运载火箭 弹道优化设计 分级优化 飞行控制模型 |
| DOI： |
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| 基金项目:国家自然科学基金(11772024，11432001） |
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| Trajectory Optimization Design for an Air-Launched Rocket |
| LI Qinglong,ZHENG Yaru,XU Ming |
| (School of Astronautics Beihang University，Beijing 100191, China) |
| Abstract: |
| This paper studies the trajectory optimization method of the air-launched rocket, which builds a dynamical model of the air-launched rocket and designs a flight control model based on the unique aerodynamic configuration. A multilevel optimization method is put forward, where the genetic algorithm is used to choose initial values of traditional nonlinear optimization algorithms preliminarily, and then the trajectory is optimized for second time with the active set method and interior point algorithm. Besides, compared with the ballistic data of the Pegasus rocket, the multilevel optimization method is flexible in launching position and covers wide range in target orbit, which can explore the full payload capacity of an air-launched rocket. |
| Key words: Air-launched rocket Trajectory optimization design Multilevel optimization Flight control model |