Army newspaper revealed how long seventh plume blue? | long seventh _ news
At the long seventh success of the maiden flight, our reporter zero-distance contact to share with you the knowledge and experience of the new generation launch vehicle--
The long March family workhorse "successor" to the
Zou Weirong correspondent of PLA daily reporter Wang Tong Wang Yulei
Sound waves, coconut breeze. Shining star staring at this magnificent scene--
On June 25, 2016, 20:00, Wenchang, Hainan spaceport, lifted the long seventh of China's newly developed carrier rocket "upgrades" space shuttle bus – the expedition a level above, success will load successfully into orbit six seven, opened a prelude to manned space lab mission.
The vast space, and family first "successor" is here! Looking at the stars, long seventh rocket in aerospace science and technology group, a hospital Vice Director Zhang Tao, has been watching the new generation launch vehicle until until the trail disappeared into the night sky. "The long March of the long seventh just beginning, and in the future it will take on more missions! "He said.
At the long seventh success of the maiden flight, reporter for the story of the long March family workhorse "successor" zero-distance contact with knowledge and experience.
In addition to the "waist" unchanged, other reborn
"Ignition! Take-off! "Accompanied by a deafening roar, long seventh rocket across the sky through the roof.
"Look at it! Orange, how glorious colors! "Came the shout of excitement in the crowd.
Upon hearing this, Hainan Wenchang space launch site in engine room engineer the Thunder really wishes to rush tells them: this time, after the long seventh fire plume ejected different colors!
Carefully considering, gushing out of an orange, was a bit more blue than ever before! Blue line to join, let the long seventh plume brighter across the night sky.
Plume the color of change reminds us that this is a brand new rocket.
Despite its apparent gene with the long March rocket family--shapes and sizes broadly similar fairing and booster is still the standard diameter of 2.25 meters in diameter, 3.35 meters in diameter core level, but at the long seventh, aerospace science and technology group, a Deputy Commander Zhang Tao of the launch vehicle, in addition to "waistline" has not changed, a new man.
"Just from the appearance point of view, high face value! "Hu Leiming remember at the Tianjin assembly plant for the first time when you see the long seventh scenario: more than ever before, flying rockets, its" legs "significantly higher, more harmonious and more beautiful.
Hu Leiming "leg" refers to the long seventh 4 boosters, approximately 27 m long boosters, close Active rocket booster twice times the length. This change means the rockets designed for a comprehensive update. Traditional booster rockets fixed need to bundle two points, and the long seventh and added a bundle than statically bundled active rocket programmes, load, bundled device design greatly increases the difficulty, reliability increased dramatically.
Not only the "legs" taller, "the weight" has also increased. It's hard to imagine the takeoff weight of nearly 600 tons of "steel" big fella, 90% or more of body weight is fuel. All day long and the long seventh, explained Hu Leiming professional to work with designers: rocket was a satellite payload to space, such as "car", "car", the weight of the vehicle itself, the smaller the better, to provide power more fuel, the better. Because of this, you can put as many of the "volume" for "passengers".
"Heart" was also strong. Zhang told reporters that the long seventh most fundamental change from the power system. It uses new technologies such as liquid oxygen and kerosene rocket engine, one medium launch vehicle orbit capacity increased from 8.6 tonnes to 13.5 tons to reach international advanced level of similar rockets.
"Why does ignition Shi Weiyan the colors a bit blue? Main fuel is changed. "He said the long seventh, no toxic pollution of liquid oxygen and kerosene as a fuel, 20% higher than conventional propellant specific impulse, thrust by 60% not only adhering to the development of China green concepts, in line with the international trend, also reduces the cost of rocket performance.
Operator yanlei station launch platform at the long seventh, gas station, this station is almost below the rocket nozzle, only 40 minutes before the rocket firing, before he left the station. The closest to the rocket boys noticed that more details of the changes.
"You look at the entire tail section, all painted with a thick layer of heat-resistant plastic. Every screw, every seams are handled it fine. "Yanlei impressions directly behind is the leap in rocket design and manufacturing capabilities and technology of our country as a whole.
No exaggeration to say that, from the "womb", the long seventh with different genes in the past. It broke through the three dimensional design, three dimensional design data management and process based on three-dimension simulation, simulation of flying performance and other key technologies, blew the whole three-dimensional process from design to manufacturing, is China's first digital rocket.
Although the "new", but stand up to Polish
Before the launch, a reporter asked Zhang Tao: the long seventh, have the confidence?
The long seventh, aerospace science and technology group, a launch vehicle Deputy Inspector replied with a smile: have faith!
Zhang's confidence stems from the long seventh, a skills. On this point, Zhang at his fingertips.
"Although the ' newcomers ', but stand up to survive! "Before the launch Tower, Zhang Tao gestures as informally as possible understand the long seventh" unique skill "-
Not afraid of water. Active rocket launch window will avoid the thunderstorm days and the long seventh rocket launch is able to achieve moderate rain, this is because the new generation of launch vehicles are "waterproof" design. "Thousands of waterproof electric connector parts alone, which also contains no cable bulk, import and export of cable, instrument body, overall professional instrument with structural cracks and structural waterproofing. "Zhang said.
Not afraid of cold. Long before the seventh was launched after you fill the liquid oxygen and rocket structure temperature drops rapidly. For storage of liquid oxygen rocket tank outer surface with a layer of very low density insulating material 10 mm thick, long seventh is like putting on a "winter clothes", although liquid oxygen as low as lingxia183℃, but the rockets outside surface temperature can be maintained at 0 deg.
Not afraid of the wind. Compared with the other 3 inland launch sites, Hainan Wenchang space launch site is one of the characteristics of wind--fifty or sixty meters high from the ground where wind speeds are far above the ground wind speed. To improve the wind resistance, long seventh mounted on "wind load shedding device", even with force 8 winds weather can still field, its wind capacity more than current rockets.
Not afraid. That training successfully parked long seventh carrier rocket fuel at low temperature for 24 hours, setting a low-temperature fuel parked the longest on record. This also means that the rocket had a more favorable time, launch reliability is greatly increased.
Not afraid of rejection. Long seventh complex structures, the rocket's "brain" system has brought new challenges. Long seventh intelligent control software control system innovation on 143, for active duty more than 30 times of rocket software, greatly improving the control accuracy. In addition, the control system is installed in each segment, changes the way the past focus on, reduce the pressure control system. "This also marks my rocket control system to the comprehensive development of digital control mode. Long seventh, which mature in the future will become a new generation of manned rockets, used to launch a new generation of manned spacecraft. "Zhang said.
The ability to survive, derived from the Polish experiment. According to statistics, only prototype development research team completed a 32-key technology research, completing 289 prototype large-scale ground tests.
Do you think the long seventh booster oxidizer tank is thinnest where only 1.7 mm, only egg shells so thick, is one of the most difficult parts in the rocket development and production. For this reason, scientists should not only develop various forming, welding technology and dynamic system for which you want to test, hydrostatic test, burst test at room temperature and other dangerous tests.
You can think of it, in order to simulate the booster rocket from takeoff to separate more than 100 seconds before the real flight State, need to be tied to the long seventh arrow repeatedly on the Tower vibration of "swing".
Vibration exposure full arrow Tower, was used to fly the long seventh of 16 thick steel wire ropes, still hanging in the 93 meters high 10230 square and the buildings.
It is the long seventh in the Earth's "cradle". Now, it takes in the cradle of all "memory", boldly into the arms of the universe. Let us bless the long March family, "new"!
It's one small step, it is a major step of China's space activities
This close contact with long seventh day, journalists lucky enough to have witnessed every step it, step by step, wonderful, meaningful step by step.
The first step: sit "sofa" to Wen Chang. It is well known that long seventh is from Tianjin marine shipping to Wen Chang. "Shipping is the rocket, the most ideal choice. "Aerospace science and Technology Corporation a long seventh rocket General Designer Wang figuratively speaking," rockets by road, railway, like ' hard bed ' boat sea transportation, it is like ' sofas '. "From Tianjin Port to qinglan harbor of Wenchang, a step behind, China's space launch" origin "landmark of displacement. Since then, China's space launch ushered in a new beginning.
The second step: with the "umbilical cord" to the tower. Vertical transition day, wrapping long seventh giant activity Tower is especially notable. "This is specifically designed for long seventh Tower of the umbilical cord. "The long seventh ground equipment designers, Deputy Director Wu Mengqiang said, with 6 pendulum rods on both sides of it, laying the flop, compressed air, air conditioning control cables around the lines and arrows, and equipped with gas and medium-frequency power supply rooms, so that its structure and composition is the most complex, which also means the development of launch vehicle technology has taken a giant step. "This step behind is perpendicular to the vertical Assembly, test, vertical transitions" three down "the great changes in test mode, the rocket in launch position test time becomes shorter.
Step three: successful first step towards space. Hainan Wenchang launch command and control center, password and report sound one after another. Long seventh success will load successfully into orbit six seven fettle, accused of cheering in the Hall.
"It's one small step, it is a major step of China's space activities. "This step marks China's manned space project and made a major breakthrough in the new generation of launch vehicles, to perfect our launch vehicle spectrum, improving access to space capabilities is of great significance.
Long seventh dream carrier. Launch platform at the long seventh, a valve room, several engineers and operators the imagination about the future: "I'm looking forward to launch cargo ship" "hope March seventh lifted the early manned spacecraft" ... ... When asked to participate in the long March launched by the seventh, the first time they old-timers say: space space station, the Moon, Mars, and deep hole detector, future, here's "the first time" is only going to get more!
Long seventh to go. "' Up to seven ' long, long March! "This is true. At the long seventh, aerospace science and technology group, a Deputy Commander Zhang Tao of the launch vehicle, how magnificent is the long seventh open era, how glorious is its mission. Complete the first task the long seventh, which soon will take on China's first space cargo ship-launched boat first-day, in the not too distant future, it will also take on multiple types of China's space mission.
This is the main rocket in service of our country "successor", more of China's future space missions "main force". High hopes Zhang long seventh: as the basic configuration of a new generation of medium-launch vehicles, through modification, or combined with the upper stage the long seventh, carrying capacity will be required to cover most major satellite launch capability, for mainstream satellite markets, adapt wide.
Here, he pointed to the uniform image of the arm, said: "you see, this is the long seventh rocket in orbit around the Earth, meaning the long seventh international reputation, to the world! ”
(, Wenchang, June 25)
Responsible editor: Kun Qu SN117
Article keywords:Long seventh
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军报揭秘:为啥长征七号的尾焰多了蓝色？|长征七号_新闻资讯
长征七号首飞成功之际，本报记者与你分享零距离接触新一代运载火箭的见闻和感受——
长征家族主力“接班人”来了
■解放军报记者 王通化 邹维荣 通讯员 王玉磊
涛声阵阵，椰风习习。灿烂星空注视着这壮丽一幕——
公元2016年6月25日20时00分，海南文昌航天发射场，我国全新研制的长征七号运载火箭托举“升级版”太空摆渡车——远征一甲上面级，成功将六类七项载荷成功送入预定轨道，拉开了我国载人航天工程空间实验室任务的序幕。
茫茫太空，长征家族主力“接班人”来了！仰望星空，航天科技集团一院长征七号运载火箭副总指挥张涛，一直注视着这个全新一代运载火箭，直到尾焰消失在夜空为止。“长征七号的长征之路刚刚开始，未来，它将承担更多使命！”他说。
长征七号首飞成功之际，本报记者为你讲述与这个长征家族主力“接班人”零距离接触的见闻和感受。
除了“腰围”没变，其他全脱胎换骨
“点火！起飞！”伴随着振聋发聩的轰鸣声，长征七号运载火箭划破天际，冲向云霄。
“看！橘红色，多壮丽的颜色！”人群中传来兴奋的呼喊。
闻听此言，海南文昌航天发射场动力室工程师胡雷鸣真想冲过去告诉他们：这一次，长征七号点火之后喷出的尾焰颜色不一样了！
仔细分辨，那喷薄而出的橘红色中，果然比以往多了一点蓝色！蓝色系的加入，让长征七号划过夜空的尾焰更亮了。
尾焰颜色的变化提醒我们，这是一款全新的火箭。
尽管它身上带着长征系列运载火箭家族的明显基因——外形和尺寸大致相似的整流罩，助推器直径仍然是标准的2.25米直径，芯级直径为3.35米，但在航天科技集团一院长征七号运载火箭副总指挥张涛看来，除了“腰围”没变，其他都脱胎换骨了。
“仅从外观上看，颜值更高了！”胡雷鸣至今记得在天津总装厂房第一次看到长征七号时的情形：比起以往在飞的长征系列火箭，它的“腿”明显变高了，更协调、更美观。
胡雷鸣口中的“腿”是指长征七号的4个推进器，长约27米的助推器，接近现役火箭助推器长度的2倍。这种改变，意味着要对火箭的设计进行全面的更新。传统火箭固定助推器需要两个捆绑点，而长征七号又增加了一个捆绑点，相对现役火箭静定的捆绑方案，载荷、捆绑装置等设计难度大大增加、可靠性大幅提升。
不仅“腿”变高了，“体重”也增加了。很难想象，这个起飞重量接近600吨的“钢筋铁骨”大个子，体重的90%甚至更多居然都是燃料。成天和长征七号工程设计人员一起工作的胡雷鸣解释得颇有专业味道：火箭是卫星等载荷通往太空的“专车”，对于这辆“专车”来说，车本身的自重越小越好，能提供动力的燃料越多越好。因为这样，就可以把尽可能多的“运量”留给“乘客”。
“心脏”也更强壮了。张涛告诉记者，长征七号最根本的变化来自动力系统。它采用了液氧煤油发动机等新技术，一举将我国中型运载火箭低轨道的运载能力由8.6吨提高至13.5吨，达到国外同类火箭先进水平。
“为什么点火时尾焰的颜色中会有点蓝？主要是燃料出现了变化。”他说，长征七号采用无毒无污染的液氧煤油作为燃料，较常规推进剂比冲提高20%，推力提高了60%，不仅秉承了中国航天绿色环保的发展理念，顺应国际潮流，还降低了成本提高了火箭性能。
操作手闫雷的工位在长征七号发射平台的配气台，这个工位几乎就在火箭喷管下面，只有在火箭点火前40分钟，他才能离开这个工位。这位离火箭最近的小伙子注意到了更多细节的变化。
“你看它的整个尾段，全部涂了一层厚厚的防热胶。每个螺钉、每个接缝都处理得很精细。”闫雷的直接观感背后，是我国火箭设计制造能力和工艺的整体跃升。
毫不夸张地说，打从“娘胎”里，长征七号就带着与以往不一样的基因。它突破了三维协同设计、三维设计数据管理及基于三维的流程仿真、飞行综合性能仿真等多项关键技术，打通了从设计到制造的全三维流程，堪称我国第一枚全数字火箭。
虽说是“新人”，但经得起千锤百炼
发射前，有记者问张涛：对长征七号有没有信心？
这位航天科技集团一院长征七号运载火箭副总指挥笑着回答：有信心！
张涛的底气源自长征七号的一身本领。对这一点，张涛了如指掌。
“虽说是‘新人’，但经得起千锤百炼！”在发射塔架前，张涛比划着尽可能通俗地讲明白长征七号的“独门功夫”——
不怕水。现役火箭发射选择窗口时都会避开雷雨天，而长征七号运载火箭则能实现中雨发射，这是因为新一代运载火箭是做了“防水”设计的。“仅电连接器防水部位就有千余处，这还不包含电缆本体、电缆进出口、仪器本体、仪器与结构缝隙和结构总体专业防水。”张涛说。
不怕冷。长征七号发射前加注完液氧后，火箭结构温度会急速下降。因为存贮液氧的火箭贮箱外表面有一层10毫米厚的密度极低的绝热材料，长征七号好比披上了一件“防寒服”，尽管液氧温度低至零下183℃，但是火箭外表面温度依然可以保持在0℃以上。
不怕风。与其他3个内陆发射场相比，海南文昌航天发射场的特点之一便是风大——距地面五六十米高的地方风速要远高于地面风速。为提升抗风能力，长征七号装上了“防风减载装置”，即使遇到8级大风的天气，依旧可以转场，其抗风能力超过现役火箭。
不怕等。那天合练，长征七号运载火箭低温燃料加注后成功停放了24小时，创下了低温燃料停放时间最长纪录。这也意味着火箭发射有了更多有利时间，发射的可靠性大大提高。
不怕扰。长征七号复杂的结构，给火箭的“大脑”控制系统带来了全新挑战。长征七号控制系统创新采用了143项智能控制软件，为现役火箭软件使用量的30倍以上，大大提高了控制精确度。另外，在每个舱段中都安装了控制系统，改变了以往集中处理的方式，减轻了控制系统压力。“这也标志着我国火箭控制系统已向全面数字化控制模式发展。长征七号未来成熟后将成为新一代载人火箭，用于发射新一代载人飞船。”张涛说。
千锤百炼的本领，源自千锤百炼的试验。据统计，仅初样研制，研制队伍就完成了32项关键技术攻关，完成了289项初样大型地面试验。
你能想到吗，长征七号的助推氧化剂箱最薄的地方仅有1.7毫米，只有鸡蛋壳那么厚，是火箭研制生产中难度最大的部分之一。为此，科学家们不仅要研发各种成形、焊接的新技术，还要对其进行动力系统试车、常温静力试验、爆破试验等危险测试。
你能想到吗，为了模拟火箭从起飞到助推器分离前100多秒的真实飞行状态，需要把长征七号绑在全箭振动塔上反复“荡秋千”。
置身全箭振动塔，当初用来悬挂长征七号的16根粗钢丝绳，仍悬垂在这个高93米、面积达10230平方米的建筑内。
那是长征七号在地球上的“摇篮”。而今，它带着在摇篮里的所有“记忆”，义无反顾地投进了宇宙的怀抱。让我们祝福这位长征家族的“新人”！
它的一小步，是中国航天的一大步
与长征七号密切接触的这段日子，记者有幸目睹了它迈出的每一步，可谓步步精彩，步步意味深长。
第一步：坐着“沙发”去文昌。众所周知，长征七号是从天津海运到文昌的。“海运是目前火箭运输方式中，最理想的选择。”航天科技集团一院长征七号运载火箭总体设计人员王旭形象地说，“火箭走公路、铁路，就像坐‘硬板床’；乘船走海运，就好似坐‘沙发’。”从天津港到文昌清澜港，这一步的背后，是我国航天发射“原点”的划时代位移。从此，我国航天发射迎来一个崭新的起点。
第二步：带着“脐带塔”走向发射塔。垂直转场那天，紧紧包裹长征七号的巨型活动塔架格外引人注意。“这是为长征七号专门设计的脐带塔。”长征七号地面设备副主任设计师吴梦强说，它的两侧装有6根摆杆，内部铺设有加注、供气、空调管路和箭上众多控制电缆，以及配气台和中频电源房间，因此它的结构及组成是最复杂的，这也意味着我国运载火箭的研制技术又迈出了一大步。”这一步的背后，也是垂直总装、垂直测试、垂直转场“三垂”测发模式的巨大变革，火箭待在发射阵地的测试时间从此变得更短。
第三步：成功迈出太空第一步。海南文昌航天发射场指挥控制中心，口令声和报告声此起彼伏。长征七号成功将六类七项载荷成功送入预定轨道的喜讯传来，指控大厅内欢呼一片。
“它的一小步，是中国航天的一大步。”这一步，标志着我国在载人航天工程和新一代运载火箭研制中取得了重大突破，对于完善我国运载火箭型谱、提升进入空间能力具有重大意义。
长征七号，梦想载体。在长征七号发射平台的一间配气室里，几名工程师和操作手畅想着未来：“很期盼发射货运飞船”“希望长征七号早日托举载人航天器”……当被问及参加长征七号第一次发射的感受，他们七嘴八舌地说：空间站、载人登月、火星舱、深孔探测器，未来，这里的“第一次”只会越来越多！
长征七号，任重道远。“‘长七’，长期，长征！”此言不虚。在航天科技集团一院长征七号运载火箭副总指挥张涛看来，长征七号所开启的时代有多壮丽，它的使命就有多光荣。完成此次首飞任务，长征七号很快将承担中国首个空间货运飞船——天舟一号的发射，在不远的未来，它还将承担中国航天多种类型的发射任务。
这是我国在役主力火箭的“接班人”，更是我国未来航天发射任务的“主力军”。张涛对长征七号寄予厚望：作为我国新一代中型运载火箭的基本构型，通过改型或与上面级组合，长征七号运载能力将覆盖大多数主流卫星所需的运载能力，面向主流卫星市场，适应面更宽。
说到这里，他指了指工作服臂上的图案说：“你看，这是长征七号火箭在环绕地球，寓意长征七号誉满全球、走向世界！”
（解放军报文昌6月25日电）
责任编辑：瞿崑 SN117
文章关键词： 长征七号
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