论文:2017,Vol:35,Issue(5):761-766
引用本文:
方群, 王雪峰, 孙冲. 混合推力作用下基于傅里叶级数展开的轨道设计方法[J]. 西北工业大学学报
Fang Qun, Wang Xuefeng, Sun Chong. A Shape-Based Method Using Fourier Series with a Hybrid Low-Thrust Propulsion System[J]. Northwestern polytechnical university

混合推力作用下基于傅里叶级数展开的轨道设计方法
方群1,2, 王雪峰1,2, 孙冲1,2
1. 西北工业大学 航天学院, 陕西 西安 710072;
2. 航天飞行动力学技术国家重点实验室, 陕西 西安 710072
摘要:
针对航天器机动轨道设计问题,引入太阳帆/电推进混合推力模式(太阳帆产生径向推力,用于改变引力场的引力大小;而与此同时电推进产生切向推力),研究了混合推力作用下的基于傅里叶级数展开的轨道设计方法。首先,根据太阳帆/电推进混合推力模型,建立航天器在极坐标系下的运动模型;然后,依据傅里叶级数展开式,将轨道设计问题转化为关于傅里叶系数的非线性规划问题。另外,文中改进原有的形状轨道设计方法,研究了航天器轨道转移的时间最优问题。最后,在考虑航天器任务约束的情况下,基于该方法设计了混合推力作用下的"地球-火星"转移轨道。仿真分析了太阳光压对形状轨道设计方法产生的影响,验证了应用混合推力设计形状轨道的可行性,并且在一定范围内可以得到燃料消耗更优的航天器连续推力转移轨道,为轨道优化提供了参考依据。
关键词:    连续推力    混合推力    轨道设计    傅里叶级数    形状方法   
A Shape-Based Method Using Fourier Series with a Hybrid Low-Thrust Propulsion System
Fang Qun1,2, Wang Xuefeng1,2, Sun Chong1,2
1. School of Astronautics, Northwestern Polytechnical University, Xi'an 710072, China;
2. National Key Laboratory of Aerospace Flight Dynamics, Xi'an 710072, China
Abstract:
In order to design spacecraft maneuver orbit, we investigate a shape-based method using Fourier series with a hybrid low-thrust propulsion (HLTP) system, which is constituted by a low-thrust thruster coupled with a solar sail, in this paper. In such way, a solar sail can provide a radial force, so the spacecraft is virtually subjected to a reduced solar gravity; meanwhile, the electric thruster provides a tangential force. Firstly, with the HLTP system, a new spacecraft dynamics model under the polar coordinate is given. Secondly, according to the Fourier series expansion, the differential equation is converted to an algebraic equation and the trajectory design problem is converted to a nonlinear programing problem about Fourier series coefficients. And an optimal time problem is discussed in this paper. With thrust constraint, a simple Earth-Mars rendezvous is used to depict the proposed method's feasibility in interplanetary low-thrust orbit design with HLTP system. Results show that the auxiliary solar sail can decrease the fuel consumption under certain conditions.
Key words:    continuous thrust    hybrid thrust    orbit design    fourier series    shape-based method    MATLAB   
收稿日期: 2017-02-12     修回日期:
DOI:
基金项目: 国家自然科学基金(11272255)资助
通讯作者:     Email:
作者简介: 方群(1960-),女,西北工业大学教授,主要从事飞行器动力学与控制研究。
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