Long seventh Wenchang launch site showing true transfer full exposure vertically | Wenchang launch site _ long seventh | news
Coconut trees in the long seventh 
Long seventh following is the launch platform 
Turn launches platform 
From another point of view "up to seven" Long seventh latest pictures: transfer full exposure vertically Wenchang launch site showing true
Today, the long seventh rocket vertical transport to the launch area, will be held from 25th to 29th of this month as planned satellite launch, which is a new built in Wenchang, Hainan spaceport first flight test mission.
From 8 o'clock in the morning, after steady for about 3 hours later, launch vehicle and carrying the load combination of launch platform safe transfer of activities to launch Tower.
According to reports, the long seventh rocket with improved vertical Assembly, vertical tests, vertical transitions "new three-down" test pattern, shorten the preparation-time of rocket launching area, improve the reliability of launch. Vertical transport of completed marking the long seventh officially entered the launching phase of launch vehicle and carrying the load combination.
Vertical transfer, you should know these things
With vertical transport of the long seventh launch vehicles. Rockets why use vertical transport? What do rocket in the transit and rats fear?
So-called transit, also known as the transition, is to rocket has carried the load vertically transferred to the launch Tower from the Assembly plant. After final assembly and testing of the rocket, and transported to the launch pad level and vertical transport can be taken two ways. Early in the space development, horizontal mode of transport due to the relatively simple, more. Today, countries are increasingly favored the vertical transportation.
Vertical transportation to maximize the rocket and spacecraft status unchanged, improve reliability and safety. If the horizontal transhipment, firing up, may result in unreliable, so the rockets after completion shipped to the launch pad, usually vertical transshipment.
Activities of the new car will turn launches platform
Vertical transport, not just the long seventh rocket, but the launch platform.
Rocket launch platform beyond the bounds of the starting point, can provide the rockets with meticulous care. Hainan Wenchang launch site, long seventh launch platform and not just a stand to support the rocket iron knot, as well as a Jina system of large-scale precision equipment, is integral to the unsung heroes of rocket was successfully launched.
Rocket lifted off from a standing start to the final firing is closely connected with the launch platform. The platform itself weighing 1800 tonnes, plus up to seven rockets nearly 600 tons of weight, total weight up to 2400 ton, platform area the size of two basketball courts.
Launch platform is one of the most important tasks from here to the rocket launch Tower about 3 kilometers away. How to do it? Is a bit heavy rail like train wheels, power car, driven by the launch platform is slowly moving forward.
Unlike in the past, the mobile platform is the biggest feature is that it not only to be able to walk in a straight line, and will go on a new course.
Design at the beginning, in order not to damage the Wenchang of the local ecological environment, seven rocket long March routes to share a track with five rockets, this requires the platform to turn 4 nearly 90 degree bend, is also the first time in the history of China's space.
And China launch site used in the past to launch platform, Wenchang satellite launch Center supports almost all the ground work is focused on the launch platform, largely because of climatic variability, frequent typhoons in Hainan, so you need to shorten the maximum residence time of the rocket launch site, speedy completion of the launch.
Precise details on the active launch platform design
Long seventh rocket launch platforms are not only powerful, in detail also give full consideration to the noise, the impact of high temperature on the launch platform, has been designed.
Noise
Rocket take off will make a huge impact and noise, which makes launching platform devices, require special protection in order to work properly. The launch platform dedicated to the noise isolation technology, meeting mission requirements.
High temperature
When the rocket firing, plume temperature will reach more than 2,800 degrees, heat is also launching platform to solve the problem. To do this, launch pad surface many sprinklers are installed, when the rocket firing, first by level water sprayer, form a protective film on the ground, when the rocket up to a certain height when opening secondary spray water again. It is calculated that before and after the rocket takes off within 1 minute or so, launch platform some 250 tons of water will be sprayed on the surface of the platform, the equivalent of a standard swimming pool water, from platform 12 valves on both sides of this work completed. Water spray must be precisely controlled, 12 valves must at the same time, split-second.
Don't think that it's just a spray of water, a lot of learning. Early fuel injection can cause catastrophic damage to rocket, and later spray also play a protective role. So, when design, consistency and reliability of the water of the entire valve, have been fully discussed and experiments, it is also a challenge to the launch pad.
Long seventh Sprint has reached a critical moment and wish it a successful maiden flight!
Responsible editor: Chen yan SN225
Article keywords:Long seventh Wenchang launch site
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长征七号垂直转运全程曝光 文昌发射场露真容|长征七号|文昌发射场_新闻资讯
△椰林树影中的长征七号 △长征七号下面的就是发射平台 △会拐弯的发射平台 △换个角度看“长七” 长征七号最新图集：垂直转运全程曝光 文昌发射场露真容
今天，长征七号运载火箭垂直转运至发射区，按计划将于本月25日至29日择机发射，这也是新建成的海南文昌航天发射场首次执行飞行试验任务。
从上午8时开始，经过平稳行驶约3小时后，运载火箭与搭载载荷组合体的活动发射平台安全转运至发射塔架。
据介绍，长征七号运载火箭采用改进后的垂直总装、垂直测试、垂直转场“新三垂”测发模式，缩短了火箭在发射区的射前准备时间，有效提高了发射可靠性。垂直转运的顺利完成，标志着长征七号运载火箭与搭载载荷组合体正式进入发射阶段。
关于垂直转运，你应该知道这些事儿
此次长征七号运载火箭采用垂直转运的方式。火箭为什么要采用垂直转运？在转运过程中火箭最怕什么呢？
所谓转运，也称转场，就是要把已经搭载了载荷的火箭从总装厂房垂直转运到发射塔架。火箭组装测试后，运往发射台可以采取水平运输和垂直运输两种方式。在航天发展的早期，水平运输方式由于比较简单，采用得较多。现如今，各国越来越青睐垂直运输方式。
垂直运输能够最大限度地保持火箭及航天器的状态不变，提高测试的可靠性和安全性。如果水平转运，发射时才竖起来，可能会导致可靠性不高，所以火箭组装后运往发射台，一般采用垂直转运的方式。
新座驾 会拐弯的活动发射平台
垂直转运，可不只是光长征七号火箭，而是整个发射平台。
发射平台是火箭登天的起点，可以为火箭提供各种无微不至的照顾。在海南文昌发射场，长征七号使用的发射平台并不仅仅是一个用来支撑火箭站立的铁疙瘩，同时也是一个集纳了多套系统的大型精密设备，是火箭成功发射不可或缺的幕后英雄。
火箭从站立起来开始到最终点火升空都跟发射平台紧密相连。这个平台本身重量就达到1800吨，加上长七火箭发射时接近600吨的重量，总重量达到了2400吨，平台的面积相当于两个篮球场大。
发射平台一个最重要的任务就是把火箭从这里运往将近3公里之外的发射塔架。如何做到的呢？就是靠有点像火车车轮一样的重型钢轨，在电源车的驱动下，发射平台可以缓缓向前行驶。
与过去不同，这个移动平台最大的特点是，它不光要会走直线，而且，要会拐弯儿。
设计之初，为了不破坏文昌当地的生态环境，长七火箭行进的路线要跟长五火箭共用一段轨道，这就要求平台要拐4个接近90度的大弯，在中国的航天史上也算是第一次。
和中国过去在发射场使用的发射平台不同，文昌卫星发射中心几乎把所有的地面支持工作都集中在这个发射平台上来进行，这主要是因为海南气候多变、台风频繁，所以需要最大限度缩短火箭在发射场的停留时间，迅速完成发射。
活动发射平台上精确的细节设计
长征七号火箭使用的发射平台不仅功能强大，在细节上还充分考虑到了噪音、高温的对发射平台的影响，进行了相应的设计。
噪音
火箭起飞时将会带来巨大的冲击和噪音，这使得发射平台中的设备，必须进行专门防护才能正常工作。此次，发射平台专门采用了隔噪技术，满足任务需求。
高温
火箭点火时，尾焰温度将达到2800多度，耐高温也是发射平台要解决的问题。为此，发射台表面安装了很多喷头，在火箭点火的时候呢，先通过一级喷头喷水，形成地面的一个保护水膜，当火箭升到一定高度的时候，再开启二级喷水。据计算，在火箭起飞前后1分钟左右的时间内，发射平台会将有约250吨的水喷洒在平台表面，相当于一个标准泳池的水量，这项工作由平台两侧的12个阀门共同完成。喷水时间必须精确掌控，12个阀门也必须同时动作，分秒不差。
别以为这只是个喷水的工作，里面也大有学问。早喷了会对火箭造成灾难性的破坏，晚喷了也起不到防护作用。所以，设计的时候，整个阀门的一致性以及喷水的可靠性，都进行了充分地讨论和实验，这也是对此次发射台的一个挑战。
长征七号已经到了箭在弦上的冲刺时刻，祝愿它首飞成功！
责任编辑：陈琰 SN225
文章关键词： 长征七号 文昌发射场
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