摘要
火星表面发射起飞是实现火星采样返回任务的关键环节之一。为准确评估火星上升器(Mars Ascent Vehicle,MAV)发射起飞时的动力学响应,基于离散单元法(Discrete Element Method,DEM)构建了模拟火壤颗粒介质模型,研究模拟火壤的承载力学特性。构建了“模拟火壤–着陆器–发射装置–上升器”多要素耦合动力学模型,开展了倾斜热发射动力学仿真。结果表明,在斜坡表面沿不同方向发射时,上升器发射分离时姿态角变化较小,偏航、俯仰、滚转角分别不大于1.0°、3.2°、0.18°;上升器运动将影响模拟火壤对着陆器各足垫支承载荷的幅值,发射过程中着陆器俯仰角与滑移量较小,整体姿态稳定,可有效支撑上升器的发射分离过程。研究方法可用于指导星表发射装置的动力学仿真与稳定性设计。
The launch and takeoff process of spacecraft from Mars is one of the key steps in the mission of Mars Sampling Return(MSR).Based on the Discrete Element Method(DEM),a particle medium model of Martian soil simulant is established to study the bearing behavior of the soil.A multi-factor coupling dynamic model including Martian soil,lander,launcher and Mars Ascent Vehicle(MAV)is also constructed to perform oblique-launch simulation.Results show that the changes in attitude angles of the MAV are relatively small under different launch directions on a slope.The yaw,pitch and roll angles of the MAV are respec-tively no greater than 1.0°,3.2°and 0.18°during the launch and separation process.The launch process will affect the magnitude of the bearing load of the Martian soil simulant on each footpad of the lander.However,the lander’s pitch angle and sliding distance are small.The overall attitude of the lander is stable,which means the lander can effectively support the MAV’s launch process.The research method used in this paper is able to guide the dynamics simulation and stability design of planetary launch devices.
作者
王惠娟
周迪
张胜
周典
唐晓峰
刘广
WANG Huijuan;ZHOU Di;ZHANG Sheng;ZHOU Dian;TANG Xiaofeng;LIU Guang(College of Astronautics,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;Shanghai Electro-Mechanical Engineering Institute,Shanghai 201109,China)
出处
《深空探测学报(中英文)》
北大核心
2025年第3期261-270,共10页
Journal Of Deep Space Exploration
基金
行星探测工程天问三号任务关键技术攻关项目(TW3001)。
关键词
火星上升器
发射
离散单元法
动力学仿真
姿态角
Mars sampling return
launch
discrete element method
dynamics simulation
attitude angle
作者简介
通信作者:周迪(1994−),男,博士,工程师,主要研究方向:发射装置设计与动力学仿真分析。通信地址:上海市闵行区中春路1333−1号(201109),E-mail:zd421315159@163.com。
