返回轨道

文章探讨利用遗传算法（GA）来自动设计标准返回轨道。

This paper studies that Genetic Algorithm ( GA ) is used to automatically design the standard return trajectory .

对自由返回轨道与Hybrid轨道进行了概述与定性分析，提出了满足一定约束的自由返回轨道详细设计方法，计算获得的精确算例可作为载人登月任务标称轨道。

Firstly free-return trajectories and hybrid trajectories are introduced briefly and analyzed qualitatively . Then an approach to design free-return trajectories satisfying certain constraints is proposed , with which a precise trajectory is calculated and can be treated as a nominal trajectory of the manned lunar landing mission .

有返回轨道的区间连续映射的周期问题

Periodic Problem of Continuous Self-map of the Interval Having Return Orbits

关于区间映射的返回轨道与周期点的一点注记

A note on return trajectories and periodic points of interval maps

遗传算法在载人飞船返回轨道一体化设计中的应用

Genetic algorithm applied to integration design for reentry trajectory of manned-spacecraft

基于遗传算法的载人航天器标准返回轨道设计

Design standard return trajectory of manned spacecraft based on genetic algorithm

大气密度变化对卫星返回轨道参数的影响

The effects of atmospheric density variance on return trajectory parameters of satellite

有返回轨道的区间连续自映射

Continuous Self - Map of the Interval Having Return Orbits

通过仿真表明，遗传算法在标准返回轨道设计中具有一定的优越性。

Simulation shows that GA has advantage for designing the standard return trajectory .

亚轨道飞行器返回轨道设计

Return Trajectory Design of the Sub-orbital Vehicle

载人飞船的返回轨道设计

Design of return orbit for manned spacecraft

航天飞机返回轨道

Return trajectory of space shuttle

另外，本文还介绍了近似估计大气密度变化对返回轨道参数影响的影响系数法。

Also , this paper deals with the " method of influence coefficients " used in evaluating approximately the effects of random atmospheric density variance on return trajectory parameters .

最后用与地月转移轨道相类似的研究方法建立了返回轨道的数学模型，应用该模型对轨道进行仿真分析并给出算例。

Finally , mathematical model as well as the simulation analysis and the design example of the return trajectory are established by the similar method as that of the Earth-Moon transfer trajectory .

本文建立了月球探测器的地月转移轨道与返回轨道的数学模型，得到了轨道的解析表达式，然后通过数值仿真对轨道的特性进行了分析并给出了具体的设计算例。

In the paper mathematical models of the Earth-Moon transfer trajectory and return trajectory for lunar probe are established , analytic expressions for the trajectory are derived , then characteristics of the trajectory are analysed via numerical simulations , and specific examples are proposed in addition .

弹道式再入飞行器以配平攻角状态返回的轨道计算原理及相应的控制要求

The Calculating Principle of Reentry Trajectory and the Corresponding Control Requirements for a Ballistic Reentry Vehicle in Trim Attack Angle

基于上述考虑，本文给出了这种飞行器以配平攻角状态返回的轨道计算原理及相应的控制要求。

On the basis of above considerations , this paper gives the calculating principle of reentry trajectory and the corresponding control requirements for the vehicle .

载人飞船返回再入轨道设计的主要任务是确定出标准返回轨道和再入制导规律。

Task of designing reentry trajectory of manned spacecraft is to make standard reentry trajectory and laws of guidance and control according to requirement of task .

重点研究了卫星通过轨道机动逃避碰撞、拦截并经一段时间后返回原轨道的逃逸方式。

The evasive - return maneuver had been studied , which is used for the satellite to avoid or evade the interception and collision in space .

全球制造业已明显进入反弹。昨日的各项调查报告显示，美国和欧洲大陆工业活动的萎缩显著放缓，而英国工业已返回增长轨道。

Global manufacturing is clearly on the rebound , with survey reports yesterday showing activity contracting at a significantly slower pace in the US and continental Europe , and UK industry back on a growth path .

接下来，轨返组合体将离开月球轨道，返回地球轨道，并在那里实施分离，返回器将进行一系列复杂的操控，于12月中旬在内蒙古自治域的预定地点着陆。

The combination of orbiter and returner will then depart the lunar orbit and return to Earth 's orbit , where the pair will break up and the returner will conduct a host of complicated maneuvers to return to a preset landing site in North China 's Inner Mongolia autonomous region in mid-December .

逼近马氏链及非黏返回过程样本轨道的构造（Ⅰ）

Approximating Markov Chains and construction of paths for nonsticky return processes (ⅰ)

然后，他们返回绕月轨道上的指令舱，开始返回地球。

Then they returned to the orbiting command module and started back to Earth .

经过长久的诸多工作，他们中的一部分可能会返回进化的轨道。

After a very long time and a great deal of work some of them may be able to return to the path of evolution .

探测器的上升器将很快从月球表面起飞，将样本送到等待在月球轨道上的返回器和轨道器。

The ascender of the probe will from the lunar surface soon to transfer the samples to the returner and orbiter waiting in the lunar orbit .

然后，他们开始准备发动登月舱起飞，返回正在绕月轨道上飞行的指令舱。

Then they began to prepare to launch the lander for the return flight to the orbiting command module .

轨道舱位于飞船的前段，通过舱口与后面的返回舱相通，轨道舱是宇航员在轨飞行期间的生活舱、试验舱和货舱。

The orbit module is the place where astronauts live and work . The descent cabin lies in the middle of the spaceship , and is the astronauts cabin and the command and control center .

和传统的贫困研究相比，长期贫困更关注贫困的动态分析以及人们随着时间摆脱（并且经常返回）贫困的轨道。

In comparison with the traditional poverty , the chronic poverty pays more attention to the dynamic analysis and eradication of the poverty as time goes on . An important concept of the chronic poverty study is the generation conduction , i.

载人航天器返回时，根据任务的要求，需要设计一条标准返回轨道，作为制导时的参考轨道。

According to the task , must design a standard return trajectory which is reference trajectory for guidance when a manned spacecraft returns .