launch window

The launch window meeting the restriction of coplanar rendezvous and the characteristics of trans-lunar trajectory is obtained by precise dynamics model.

采用精确轨道动力学模型，得到了满足共面交会约束的发射窗口，以及地月转移轨道特性。

The Confirmation of Field Negative Ion Emission Launch window

场致发射负离子的检验

In this context, this paper also carries out comprehensive related researches, such as the orbit design and computation of the Earth-Mars transfer orbit, the selection of its launch window, and mid-course trajectory correction maneuver, etc..

文中以此为背景，对地火转移轨道的轨道设计、轨道计算、发射窗口选择和中途轨道修正等进行了全方面的研究。

The problem on the launch window is divided into two parts, the plane window problem and the phase window problem. Analytical models of the two problems are established, and the results are deduced in explicit form.

将紧急发射任务发射窗口问题分解为平面窗口问题和相位窗口问题，分别建立了平面窗口和相位窗口的解析求解模型，导出了发射窗口的解析解。

In this dissertation, a design strategy is presented of graphical analyze and optimal launch window search.

本文提出了结合图形分析方法与发射窗口搜索的借力飞行轨道设计策略。

On this day only because of the high land and can not stand bluebottle suffering interference, launch lilies, nail the dozens, did not realize that gave female students saw in the window to steal.

这一天陆高止因受不了青蝇苦扰，发射金针，钉死了数十只，哪知却给女弟子在窗外偷看到了。

The three missions are taking advantage of a planetary launch window that only comes around once every 26 months when Earth and Mars are in favorable positions in their orbits around the sun.

这三个任务利用了行星发射窗口，26个月才会出现一次，此时地球和火星在围绕太阳的轨道上处于发射有利位置。

A next-generation Mars rover is soon to begin its voyage, with a launch window starting in late November and lasting about three weeks.

研究火星的下一代探测器不久将开始其太空之行，可能的发射时间窗口是11月下旬，可持续大约3星期。

The launch window on Oct.19,2004 was calculated under the general limited conditions and specific limited conditions of FY-2C meteorology satellite in this paper.

根据卫星发射窗口的一般性和风云二号（FY-2）C气象卫星特定限制条件，计算了2004年10月19日符合要求的发射窗口。

By analyzing the constraint conditions, the calculating method for launch window is brought out. Then the launch window in rendezvous between aerocraft and space station is researched. 4.

分析了近地交会对接发射窗口的约束条件，并给出了发射窗口的求解方法，对飞行器与近地空间站交会的发射窗口做出了研究。

The mission was cancelled until the next launch window which will be exactly three weeks from today.

太空任务取消了，要等到下次行星运转的位置对发射有利的时机再进行，那时正好是3个星期之后。

In the light of the drawbacks of the conventional pork-chop plots method that needs a lot of computation time with low computation efficiency, a search approach for optimal launch window for exploring small celestial body was proposed based on the genetic algorithm.

针对传统pork-chop图方法计算量大、计算效率低的问题，提出了一种基于遗传算法的小天体探测发射机会搜索方法。

The conclusions indicate that this method has the advantages of broadening launch window and saving fuels comparing with the active phasing method based on impulse.

该方法具有扩大发射窗口，且比基于脉冲主动调相法节省燃料等优点。

Introduce the reference frame and time system used in orbit design particularly. Analyzed the orbit characteristic of two-body problem and launch window.

详细介绍了用于轨道设计的坐标系统和时间系统，分析了二体轨道特性和发射窗口的基本特性。

Launch window design and experiment of pneumatic separation apparatus for take-off motor

发射发动机气动分离机构设计与试验

This year's launch window closes in mid August, and any spacecraft delayed past then will face two years of expensive storage.

今年的发射窗口截止8月中旬，超过这一时限没有发射的航天器就要再等上两年，而且保存费用昂贵。

The launch configuration window will be displayed.

此时显示启动配置窗口。

Search for Optimal Launch Window for Small Celestial Body Exploration Mission Using Genetic Algorithm

利用遗传算法搜索小天体探测最优发射机会

The launch window's only open until week's end.

我们的升空窗口只到周末。

Launch window A Study of Multi-channel and Waveform System for Acoustic Emission Test

多通道全波形声发射检测系统的研究

The larger the launch window, the greater the difference in speed between spacecraft and target that had to be made good.

发射窗越大，飞船与目标之间需要调整的速度差异就越大。

The parameters of trans-lunar trajectory are calculated using numerical method, and the location of entrance point and the appropriate launch window are analyzed.

利用数值方法计算得到了满足条件的奔月轨道，并对入口点位置选取以及满足条件的奔月窗口做出了分析。

Launch window The hot carrier exchange energy with lattice by emission and absorption of phonons.

热载流子通过发射和吸收声子，与晶格进行能量交换。

The vibronic emission spectrum of no in the visible region launch window

NO在可见区的电子-振动发射谱

Mack's family was at the launch pad. He saw them out the window. They were waving, his youngest daughter was crying.

麦克家人都在发射台那边，他从窗户看到他们在挥手，他的小女儿还哭了起来。

Denise Kirkpatrick, the Open University's pro vice-chancellor for learning and teaching, said at the launch: We can open up free access to educational resources as well as a window for our potential students.

开放大学负责教学的执行副校长丹尼斯•柯克帕特里克（Denise Kirkpatrick）在推出这些讲座时表示：我们在免费开放教学资源的同时，也向潜在的学生打开了一扇窗。

The analysis result showed that determination of launch window was related to the position of the satellite, the earth and the sun closely.

分析结果表明，卫星发射窗口的确定与星、地、日间的位置密切相关。

Design of the Model of Three-stage Coil Launcher Launch window

三级线圈发射模型研究

Based on the characteristics of launch window, an algorithm to calculate the launch window for space rescue mission was deduced.

从发射窗口的基本特性出发，推导了空间救援任务发射窗口的解析求解方法。

Research of HTSC Field Electron Emission Launch window

高温超导体的场致发射研究