航空航天港

 找回密码
 注册会员

QQ登录

只需一步,快速开始

返回列表
楼主: wsl2005
收起左侧

[俄罗斯] 2017年11月28日13:41,Meteor-M2-1等19星由Soyuz-2.1b/Fregat自东方发射场发射失败

  [复制链接]
月神号特快 发表于 2017-11-30 09:57 | 显示全部楼层
http://www.russianspaceweb.com/meteor-m2-1.html#culprit

By November 29, specialists at NPO Lavochkin, which builds Fregat, had already narrowed down the most likely culprit in the failure of the Soyuz launch from Vostochny spaceport, industry sources close to investigation told RussianSpaceWeb.com.


Although the information is still preliminary, it is increasingly clear that all the hardware aboard the Fregat upper stage performed as planned. But, almost unbelievably, the flight control system on the Fregat did not have the correct settings for the mission originating from the new launch site in Vostochny, as apposed to routine launches from Baikonur and Plesetsk. As a result, as soon as Fregat and its cargo separated from the third stage of the launch vehicle, its flight control system began commanding a change of orientation of the stack to compensate for what the computer had perceived as a deviation from the correct attitude, which was considerable. As a result, when the Fregat began its first preprogrammed main engine firing, the vehicle was apparently still changing its attitude, which led to a maneuvering in a wrong direction.


At the time, ground control was still receiving telemetry from the mission, but the space tug left the communications range around 7o0 seconds after the liftoff and before the completion of the first maneuver. Apparently, it was not immediately possible to predict the exact trajectory of the stage resulting from the wrong attitude, but it likely led to a suicidal plunge of the stack into the Earth's atmosphere. The available telemetry also allows to establish the exact culprit in the failure, sources said.


转了发射场没调整好控制软件就出事了...

jht001 发表于 2017-11-30 10:08 | 显示全部楼层
月神号特快 发表于 2017-11-30 09:57
http://www.russianspaceweb.com/meteor-m2-1.html#culprit

By November 29, specialists at NPO Lavoch ...

看人家这归零速度, 估计一周就搞定了
cmj9808 发表于 2017-11-30 10:33 | 显示全部楼层
qwxr 发表于 2017-11-30 00:15
中国有朝北发射过吗?

有,西昌打SSO需要朝北发射,不过这种机会很有限
cmj9808 发表于 2017-11-30 10:50 | 显示全部楼层
Fregat在冰岛附近再入大气层。该空域恰好临近繁忙的欧美跨洋航线,空管公开频道内突然涌入大量目击报告,很多航班上的机组和旅客都有幸看到这一变形金刚降临地球般的壮观场面。

图片1.png

原始视频详见
https://twitter.com/thatjetsetgirl/status/935569848507170817
ceres 发表于 2017-12-1 10:08 | 显示全部楼层
貌似比想象的复杂啊 (rsw)
The complex failure scenario of the second Soyuz rocket launch from Vostochny continued emerging in the days following the accident. Although the culprit had quickly been pinned down by flight control specialists, even seasoned space engineers, who were not directly involved in the intricacies of guidance systems, struggled to fully comprehend the bizarre nature of the accident.

In the Soyuz/Fregat launch vehicle, the first three booster stages of the rocket and the Fregat upper stage have their two separate guidance systems controlled by their own gyroscopic platforms. The guidance reference axis used by the gyroscopes on the Soyuz and on the Fregat had a 10-degree difference. The geographical azimuth of previous Soyuz/Fregat launcher from Baikonur, Plesetsk and Kourou normally laid within a range from positive 140 to negative 140 degrees. To bring the gyroscopic guidance system into operational readiness, its main platform has to be rotated into a zero-degree position via a shortest possible route. The azimuth of the ill-fated Vostochny launch was 174 degrees, and with an additional 10 degrees for the Fregat's reference axis, it meant that its gyro platform had to turn 184 degrees in order to reach the required "zero" position.

In the Soyuz rocket, the gyro platform normally rotated from 174 degrees back to a zero position, providing the correct guidance. However on the Fregat, the shortest path for its platform to a zero-degree position was to increase its angle from 184 to 360 degrees. Essentially, the platform came to the same position, but this is not how the software in the main flight control computer on the Fregat interpreted the situation. Instead, the computer decided that the spacecraft had been 360 degrees off target and dutifully commanded its thrusters to fire to turn it around to the required zero-degree position. After a roughly 60-degree turn, the gyroscope system on the Fregat stalled, essentially leaving the vehicle without any ability to orient itself in space...

wsl20005 发表于 2017-12-1 11:11 | 显示全部楼层
貌似Fregat上面级的卫星导航定位系统在合练中就反复发生系统故障,而两位主官却批准发射,他们将以渎职罪受到刑事处罚。
https://iz.ru/677025/dmitrii-strugovetc-nikolai-krasnov-aleksei-ramm/avariei-fregata-zainteresovalsia-sledstvennyi-komitet


                               
登录/注册后可看大图



Lsquirrel 发表于 2017-12-1 11:16 | 显示全部楼层
发信人: ESSE (Ad Astra Per Aspera), 信区: Aero
标  题: 联盟-2.1B火箭发射失败原因
发信站: 水木社区 (Fri Dec  1 11:07:40 2017), 站内

在联盟号火箭和Fregat上面级的组合中,联盟号火箭的三级和Fregat上面级都有两个独
立的导引系统,由各自的陀螺仪控制。联盟号火箭的陀螺仪和Fregat上面级的陀螺仪所
使用的引导参考轴相差10度。

之前从拜科努尔,普列谢茨克和库鲁发射时,地理方位角一般在正140度到负140度之
间。为了使陀螺制导系统进入准备状态,其主平台必须通过尽可能短的路线旋转到零度
位置。而从Vostochny发射时,它的地理方位角是174度,而Fregat的参考轴又增加了
10度,这意味着它的陀螺仪平台必须旋转184度才能达到所需的“零”位置。

在联盟号火箭中,陀螺平台通常从174度旋转回零位,提供正确的指导。然而在Fregat
上,其平台到零度位置的最短路径是将其角度从184度增加到360度。从本质上说,这
个平台到了相同的位置。但Fregat主要飞行控制计算机中的软件却不认为零度和360度
是相同的位置,它认为相差了360度,因此指挥其方位调整推进器点火,把它转向所需
的零度位置。经过大约60度的旋转,Fregat上的陀螺仪系统卡住了,而使飞船失去了在
太空中调整自己方位的能力。
--

ddgs_wlz 发表于 2017-12-1 11:22 | 显示全部楼层
wsl20005 发表于 2017-12-1 11:11
貌似Fregat上面级的卫星导航定位系统在合练中就反复发生系统故障,而两位主官却批准发射,他们将以渎职罪受 ...

虽然最高苏维埃不复存在了,但领导还留有当年的遗风
wsl20005 发表于 2017-12-1 11:41 | 显示全部楼层
助推器残骸。

                               
登录/注册后可看大图



                               
登录/注册后可看大图


                               
登录/注册后可看大图



                               
登录/注册后可看大图



                               
登录/注册后可看大图

https://www.gzt-sv.ru/2017/12/01/najdennye-tyndinskom-rajone-fragmenty-raketynositelya.html

wsl20005 发表于 2017-12-1 12:22 | 显示全部楼层
wsl20005 发表于 2017-12-1 11:11
貌似Fregat上面级的卫星导航定位系统在合练中就反复发生系统故障,而两位主官却批准发射,他们将以渎职罪受 ...

2天前的报道,,,

MOSCOW, November 29. /TASS/. The Fregat booster carrying a cluster of nineteen satellites may have been lost due to a failure in the GLONASS equipment, which is responsible for enhancing the accuracy of orbiting space satellites, a source in the space rocket industry told TASS.

"According to preliminary findings, there occurred a technical flaw in the booster’s satellite navigation equipment, which operates on the basis of GLONASS and GPS signals and enhances the Fregat’s accuracy in putting space satellites into the designated orbits," the source said.

As a result the booster after separation from the third stage of the Soyuz-2.1b rocket was not properly oriented, entered the atmosphere and splashed into the Atlantic Ocean.

The Soyuz-2.1b space rocket carrying the booster Fregat and nineteen space satellites blasted off from the Vostochny spaceport at 08:41 on Tuesday. The Russian space corporation Roscosmos then said the weather satellite Meteor-M N.2-1 was successfully delivered to an intermediate orbit but contact with it failed to be established.



Earlier, a source in the space rocket industry told TASS none of Russian or foreign emergency services had reported anything like the fall of debris of the Fregat booster and 19 satellites. With a high degree of probability it may be assumed that it either fell into the Atlantic or, which is less likely, entered the wrong orbit.


http://tass.com/science/978015
wsl20005 发表于 2017-12-3 12:11 | 显示全部楼层
本次任务的背锅侠Fregat-M上面级

IMG_20171203_120300.jpg IMG_20171203_120247.jpg IMG_20171203_120228.jpg
cmj9808 发表于 2017-12-4 13:02 | 显示全部楼层
目前基本认定是项目管理的责任。制造Soyuz-2火箭的RKTs Progress与制造Fregat上面级的NPO Lavochkin之间缺少必要的沟通,由于火箭最初安排的是拜科努尔的任务,更换发射场后技术人员忽略了发射台转角改变这一细节,而高层管理人员则根本不知道有这一回事。

http://russianspaceweb.com/meteor-m2-1.html#1203
hdcscience2012 发表于 2017-12-4 13:23 | 显示全部楼层
cmj9808 发表于 2017-12-4 13:02
目前基本认定是项目管理的责任。制造Soyuz-2火箭的RKTs Progress与制造Fregat上面级的NPO Lavochkin之间缺 ...

原来是这样,这责任认定书咋写?……
wsl20005 发表于 2017-12-4 13:45 来自航空航天港手机版! | 显示全部楼层
能否将一楼图片改为Fregat图片?WNISAT-1R毕竟不属于本次任务,有关本次任务失败的网络消息配图中有的配有WNISAT-1R卫星LOGO,多少有点委屈了小日本。
cmj9808 发表于 2017-12-4 13:56 | 显示全部楼层
wsl20005 发表于 2017-12-4 13:45
能否将一楼图片改为Fregat图片?WNISAT-1R毕竟不属于本次任务,有关本次任务失败的网络消息配图中有的配有W ...

主帖改成了Meteor-M 2-1的信息,以后也要注意尽量根据主载荷开发射帖,因为次级载荷切换频繁,很难跟踪
cmj9808 发表于 2017-12-4 13:57 | 显示全部楼层
hdcscience2012 发表于 2017-12-4 13:23
原来是这样,这责任认定书咋写?……

各打五十大板。相关人员撤职,视损失大小,也许有人要承担刑事责任
nashesvobodnoye 发表于 2017-12-5 08:43 | 显示全部楼层
ceres 发表于 2017-12-1 10:08
貌似比想象的复杂啊 (rsw)
The complex failure scenario of the second Soyuz rocket launch from Vostoc ...
Instead, the computer decided that the spacecraft had been 360 degrees off target and dutifully commanded its thrusters to fire to turn it around to the required zero-degree position.


这也行。。。360°的偏差。。。
zscn 发表于 2017-12-5 10:20 | 显示全部楼层
这算不算是低级错误呢?
漆室葵忧 发表于 2017-12-5 10:43 | 显示全部楼层
zscn 发表于 2017-12-5 10:20
这算不算是低级错误呢?

复杂系统经常会出意想不到的问题。
hdcscience2012 发表于 2017-12-5 20:19 | 显示全部楼层
cmj9808 发表于 2017-12-4 13:57
各打五十大板。相关人员撤职,视损失大小,也许有人要承担刑事责任

俄总理:火箭发射失败要追责

新华社莫斯科12月4日电(记者王晨笛)俄罗斯总理梅德韦杰夫4日说,对于“联盟-2.1B”火箭日前发射失败,应追究相关人员责任。

  据今日俄罗斯通讯社报道,梅德韦杰夫当天与副总理开会时指出,此次发射失败给俄航天业带来的损失“不只是钱的事”,更影响到俄在该行业的声誉。因此,应意识到事件的严重性,全面调查原因,并追究相关人员责任。

  他同时批评一些部门负责人草率公布发射成功的消息。

  据报道,梅德韦杰夫已责成负责航天事务的副总理罗戈津调查事故原因、处理善后事宜,相关调查委员会已经成立。

  11月28日,俄罗斯航天集团从位于俄远东地区的东方发射场发射了一枚携有19颗卫星的“联盟-2.1B”运载火箭,但火箭未能将这些卫星送入预定轨道。这些卫星来自俄罗斯、加拿大、挪威、日本、德国、美国等国,其中约半数没有航天发射保险。

http://news.xinhuanet.com/world/2017-12/05/c_1122060967.htm

这下好了~


回复 支持 1 反对 0

使用道具 举报

您需要登录后才可以回帖 登录 | 注册会员

本版积分规则

QQ|小黑屋|航空航天港 ( 豫ICP备12024513号-1 )

GMT+8, 2019-12-7 20:25 , Processed in 0.249601 second(s), 22 queries , Gzip On.

技术支持:飞腾网络

© 2001-2018

豫公网安备 41019702002513号

快速回复 返回顶部 返回列表