The report, Limiting future collision risk to spacecraft, was commissioned by Nasa last April to evaluate its programmes on 'space junk', officially known as MMOD (Micrometeoroids and Orbital Debris).
一份旨在限制未来这些碎片可能会对航空飞船造成的危险的报告在去年的四月份由宇航局发布，用来评估他们关于太空垃圾，名为MMOD（微流星体和太空碎片）的项目。
The signals indicate that the spacecraft bus is functioning normally and ready to begin orbital maneuvers and operational testing.
此信号表明，该卫星运转良好且准备好开始轨道演习和操作测试。
Orbital plans to carry out the development, production and integration of the Cygnus spacecraft and cargo modules at company facilities in Dulles, Va., and Greenbelt, Md.
轨道科学公司计划在位于弗吉尼亚州Dulles和马里兰州Greenbelt的工厂完成“天鹅座”太空船和货物模块的开发、制造和集成。
What You’ll Learn: How to design and model spacecraft and orbital and planetary outposts
你将学习：如何设计和制作航天器和轨道及星际前哨站的模型
To counteract its orbital drag, mission controllers must use propellant in attached spacecraft to periodically loft the station to a higher orbit.
为了抵消其轨道牵引力，任务控制中心必须使用f飞船自带的推进器定期将其推进到一个更高的轨道。
We propose performing launches of spacecraft of other nations and international organizations with our launch vehicles and carrying out joint studies at orbital stations, based on mutual agreement.
我们希望在双方协商的基础上，用我们的运载火箭实现为其他国家或国际组织发射航天器，并在轨道空间站上开展联合研究。
The dynamics of the relative motion between two nearby spacecraft is investigated in a local orbital coordinate system. It' has been pointed out that an equilibrium state may exist in the motion;
采用本地轨道坐标系对两邻近飞船间相对运动动力学展开研究，指出在相对运动中也存在平衡状态；
The method of intelligent control applied to the orbital control of rendezvous and docking phase of spacecraft is presented in this paper.
本文介绍了将智能控制方法用于航天器交会对接段的轨道控制。
This paper presents a method by using of which the orbital elements of two spacecrafts can be determined by an adjoint orbit. Also, this method can be used to the condition of multi-spacecraft.
文中给出一种从伴随轨道确定两个航天器轨道要素的方法，这一方法也可推广应用于多个航天器的情况。
This paper presents a method by using of which the orbital elements of two spacecrafts can be determined by an adjoint orbit. Also, this method can be used to the condition of multi-spacecraft.
文中给出一种从伴随轨道确定两个航天器轨道要素的方法，这一方法也可推广应用于多个航天器的情况。
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