| 引用本文: | 王涛,张洪波,李永远,等.Gauss伪谱法的再入可达域计算方法.[J].国防科技大学学报,2016,38(3):75-80.[点击复制] |
| WANG Tao,ZHANG Hongbo,LI Yongyuan,et al.Landing footprint generation of entry vehicle based on Gauss pseudospectral method[J].Journal of National University of Defense Technology,2016,38(3):75-80[点击复制] |
|
| |
|
|
| 本文已被：浏览 9127次 下载 7026次 |
| Gauss伪谱法的再入可达域计算方法 |
| 王涛1, 张洪波1, 李永远2, 汤国建1 |
|
(1.国防科技大学 航天科学与工程学院， 湖南 长沙 410073;2.中国运载火箭技术研究院 研发中心， 北京 100076)
|
| 摘要: |
| 为了加快优化速度和提高优化质量，提出一种基于Gauss伪谱法的再入可达域计算方法。鉴于再入时一般采用固定的攻角剖面，将攻角作为状态变量，仅对倾侧角进行单变量寻优。优化过程中，再入纵程被视为终端约束，以获取不同纵程下的最大横程，将速度倾角视为过程约束，以消除弹道的跳跃现象。通过仿真，求解出了通用航空飞行器的再入可达域，结果与间接法的理论证明一致。 |
| 关键词: 再入 可达域 Gauss伪谱法 攻角剖面 横程 |
| DOI：10.11887/j.cn.201603013 |
| 投稿日期：2015-03-13 |
| 基金项目:航天科技创新基金资助项目（CASC201306） |
|
| Landing footprint generation of entry vehicle based on Gauss pseudospectral method |
| WANG Tao1, ZHANG Hongbo1, LI Yongyuan2, TANG Guojian1 |
|
(1.College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China;2.Research & Development Center, China Academy of Launch Vehicle Technology, Beijing 100076, China)
|
| Abstract: |
| To reduce calculation time and improve optimization result, a Gauss pseudospectral method was proposed. For the attack angle was regarded as a state variable and only bank angle was optimized, which was reasonable since attack angle profile was often predesigned in engineering. Down-range of vehicle was regarded as event constraint to obtain the maximum cross-range, while the flight path angle was regarded as path constraint to eliminate skips on the trajectory. Through simulation, the footprint of CAV(common aero vehicle) is generated, which is in accordance with the theoretical analysis of the indirect optimization method. |
| Keywords: entry footprint Gauss pseudospectral method attack angle profile cross-range |
|
|
|
|
|
