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International Space Flight (ESA, Russia, China and others) => Chinese Launchers => Topic started by: Galactic Penguin SST on 07/27/2020 04:16 pm

Title: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Galactic Penguin SST on 07/27/2020 04:16 pm
Apparently this launch patch for the launch team has surfaced. Something to look out for a launch in August?  ::)
Title: Re: Gaofen-11 (02) - CZ-4B - 2020?
Post by: zubenelgenubi on 07/27/2020 05:40 pm
Gaofen-11 (https://space.skyrocket.de/doc_sdat/gf-11.htm)

Gaofen-11 (01) launch thread (https://forum.nasaspaceflight.com/index.php?topic=46051.0)

Speculation: Could this be the next launch from Taiyuan LC-9?  Looking through the recent years' history of launches from TSLC LC-9 (https://space.skyrocket.de/doc_lau_fam/df-5.htm), the minimum turn-around time for LC-9 is approximately 20 days.  The last launch from this launch complex was on July 25 UTC.
***

EDIT
Cross-post:
Quote from: LaunchStuff Tweet
Hmmm... 3 notams all active between the same time frame. Pink and green look to be missile testing related but the red one is same area as CZ-2C carrying HY-1D from june 10th.
Hmmmmm.....
Red NOTAM zone: close/open times: August 15 UTC 0348 and 0429.  Did anything happen?
In any event no object was cataloged
Could have been a DF-ZF target type flight.
Title: Re: Gaofen-11 (02) - CZ-4B - 2020?
Post by: zubenelgenubi on 09/01/2020 08:40 pm
https://twitter.com/Cosmic_Penguin/status/1297393927142572032
Quote
(PROBABLE) There was a mission logo of a certain “GF-11-02” that appeared last month. The launch mentioned above [Gaofen-3 (02)] might be instead w/ this one & LM-4B as the last GF-11 was lifted into a 200 x 700 km polar orbit before raising its on orbit, which might mean down-range tracking [Yuan Wang 3 entered Indian Ocean].

https://twitter.com/Cosmic_Penguin/status/1298170509515866113
Quote
(RUMOR) After entering the Indian Ocean the Yuan Wang 3 tracking ship went W instead of SW as expected, which lessen the chance of a LM-4C launch soon & aligns more with the LM-2F (s/n T3 according to a Chinese guidance control paper)/spaceplane thingy flying soon!
Title: Re: Gaofen-11 (02) - CZ-4B - September 7, 2020 (~06:00 UTC)
Post by: Galactic Penguin SST on 09/04/2020 12:18 pm
NOTAMs are out with zones exactly the same as in the earlier GF-11 launch:

https://twitter.com/LaunchStuff/status/1301853947859275779
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (~06:00 UTC)
Post by: Alter Sachse on 09/04/2020 06:03 pm
http://www.spaceflightfans.cn/event/china-long-march-4b-rocket-launch-gaofen-11b-satellite
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (~06:00 UTC)
Post by: Steven Pietrobon on 09/06/2020 11:40 pm
9ifly has a launch time of 05:57 UTC.

http://9ifly.spacety.com/thread-93689-4-1.html

Photo from SFF.

http://www.spaceflightfans.cn/event/china-long-march-4b-rocket-launch-gaofen-11b-satellite
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (~06:00 UTC)
Post by: Steven Pietrobon on 09/07/2020 05:57 am
Launch should be happening about now.
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (~06:00 UTC)
Post by: tehwkd on 09/07/2020 05:57 am
9ifly has a launch time of 05:57 UTC.

http://9ifly.spacety.com/thread-93689-4-1.html

Photo from SFF.

http://www.spaceflightfans.cn/event/china-long-march-4b-rocket-launch-gaofen-11b-satellite

The image is from july3 launch
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (~06:00 UTC)
Post by: Galactic Penguin SST on 09/07/2020 06:11 am
https://twitter.com/Nextlaunch/status/1302851244579590146

Liftoff confirmed.
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (~06:00 UTC)
Post by: Steven Pietrobon on 09/07/2020 06:13 am
Report of launch at 06:00 UTC.

http://9ifly.spacety.com/forum.php?mod=redirect&goto=findpost&ptid=93689&pid=764078

"Launched at 14:00, it's time for the Star Arrows to separate."
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (~06:00 UTC)
Post by: Steven Pietrobon on 09/07/2020 06:21 am
Official time of launch is 05:57 UTC. Doesn't appear to be any other payloads.

http://9ifly.spacety.com/forum.php?mod=redirect&goto=findpost&ptid=93689&pid=764080

"Congratulations on the successful launch of the 11th 02 star! At 13:57 today, China successfully put the High Point 11 02 into orbit with the Long March IV B carrier rocket at the Taiyuan Satellite Launch Center, and the launch was a complete success. High score 11 02 star is an optical remote sensing satellite, the ground image resolution up to sub-meter level, mainly used in land census, urban planning, land rights, road network design, crop estimation and disaster prevention and mitigation and other fields, can provide information security for the "Belt and Road" construction. (The head of the CCTV reporter Yan Noon Liu Weiyu - our space)"
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (~06:00 UTC)
Post by: Galactic Penguin SST on 09/07/2020 06:22 am
Confirmed launch success with T-0 at 05:57 UTC.
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Steven Pietrobon on 09/07/2020 06:25 am
Long report.

http://9ifly.spacety.com/forum.php?mod=redirect&goto=findpost&ptid=93689&pid=764083

Long March IV B successfully launched high score 11 02 stars.
Shanghai Aerospace today.

September 7, 2020.
Long March IV B carrier rocket.
Ignition at Taiyuan Satellite Launch Centre.
Successfully put high-score 11 02 into orbit.
The launch was a complete success.

The Long March IV B carrier rocket, developed by China Aerospace Science and Technology Group Co., Ltd. in august, has a single-star and multi-star launch capability for launching a variety of satellites and different orbital requirements, and has a solar synchronous circular orbit carrying capacity of 2.5 tons (orbital altitude 700 km).
The mission is the third in this year's Long March IV series of launch vehicles, kicking off the 2020 model's continuous high-density launch. In the recent stage, the Long March IV series of launch vehicles is facing two base launch missions in Taiyuan and Jiuquan in parallel. In order to ensure high-quality completion of this task, the project office planning ahead of time, from the follow-up mission planning arrangements, product and ground equipment configuration, key tasks to ensure the success of the means to do a comprehensive planning, to ensure that the technical status is correct, risk identification in place, effective control measures, reliable product quality.

In order to meet the requirements of the satellite envelope, the rocket is equipped with a s4m von Carmen rective shroud, and the use of high-altitude wind passive load reduction technology, reducing the additional load caused by high-altitude wind, enhance the rocket's ability to adapt to the wind field. At the same time, this model for the first time added a wireless star cover environmental monitoring system, simplifying the launch area of the satellite rectification hood temperature and humidity environment detection.
Long March 4 series launch vehicle development team for the separation system, by optimising product redundancy, further eliminate single-point fault link, improve the reliability of the whole arrow; In order to ensure high quality at the same time effectively improve the efficiency of quality control and the effectiveness of the implementation of the work, effectively guarantee the "three high" requirements of the landing, to help the construction of space power.

The satellite launched is the space science and technology group's five institutes to grasp the total development of the high score of 11 02 stars, will be mainly used in land census, urban planning, land rights, road network design, crop assessment and disaster prevention and mitigation and other fields, for the "Belt and Road" and other major national strategic implementation and national defence modernisation to provide information security.
The launch was the 345th launch of the Long March series of launch vehicles and the 122nd flight test of the Long March series of launch vehicles developed by the Eight Houses.

Photograph: Ma Wei.
Editing by Ma Yongxiang.
Responsibility: Yue Fusheng.
Supervised by: Liu Xi Shen Rui.
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Steven Pietrobon on 09/07/2020 06:28 am
Y46.

https://mp.weixin.qq.com/s?__biz=MjM5MjMxOTcwMQ==&mid=2651281444&idx=1&sn=934381d91f1cfd39ca6d9559aec73e6d
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Steven Pietrobon on 09/07/2020 06:35 am
Launch photo.

https://mp.weixin.qq.com/s?__biz=MjM5Njc4ODY1MQ==&mid=2651924732&idx=2&sn=67ec9110d48f8651ef9579537f84e17a
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Steven Pietrobon on 09/07/2020 06:41 am
Launch video.

"The Long March IV B carrier rocket was launched at 13:57 on September 7th at 13:57, and successfully put the high-score 11th 02 into orbit and the launch was a complete success. The satellite and the high-score 11 satellite in orbit after the network, will greatly improve the efficiency of observation. The mission was the 345th launch of the Long March series of launch vehicles."

https://www.weibo.com/5386897742/JjwoopIVo?from=page_1001065386897742_profile&wvr=6&mod=weibotime&type=comment
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Steven Pietrobon on 09/07/2020 06:44 am
Andrew Jones@AJ_FI
16m
A Long March 4B successfully launched the Gaofen-11 (02) Earth observation satellite from Taiyuan, lifting off 30 minutes ago (05:57 UTC), SAST confirms. [image: OurSpace]

twitter.com/AJ_FI/status/1302855758887948288
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Steven Pietrobon on 09/07/2020 06:47 am
Mission 345.

http://9ifly.spacety.com/forum.php?mod=redirect&goto=findpost&ptid=93689&pid=764113
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Liss on 09/07/2020 08:43 am
Project Chief Designer (工程总设计师) is 徐福祥 [Xu Fuxiang].
Satellite Commander (总指挥) is 邱家稳 [Qiu Jiawen].
Satellite Chief Designer (总设计师) is 李劲东 [li Jindong]
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Steven Pietrobon on 09/07/2020 11:36 am
Sorry for the poor resolution. I don't have a 9ifly account.

http://9ifly.spacety.com/forum.php?mod=redirect&goto=findpost&ptid=93689&pid=764175
http://9ifly.spacety.com/forum.php?mod=redirect&goto=findpost&ptid=93689&pid=764173
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Liss on 09/07/2020 11:41 am
The orbit for 46396U is 97.3°, 248x694 km.
The page from press kit is attached.
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Galactic Penguin SST on 09/07/2020 12:03 pm
 ::)

https://twitter.com/LaunchStuff/status/1302933386990891008
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: sdsds on 09/07/2020 12:27 pm
Shattered expectations. :(

At some point it became common for a "first stage return" to involve ... landing legs?
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Chris Bergin on 09/07/2020 01:11 pm
Rui;s article.

https://www.nasaspaceflight.com/2020/09/long-march-4b-lofts-gaofen-11-02/

https://twitter.com/NASASpaceflight/status/1302956559220252676
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Liss on 09/07/2020 02:18 pm
So many words on Gaofen and CZ-4B and Taiyuan, and almost nothing on Gaofen 11 02 itself...
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: jcm on 09/07/2020 04:24 pm
The orbit for 46396U is 97.3°, 248x694 km.
The page from press kit is attached.


Very nice!  Can anyone translate steps 10, 12 and 13 on the timeline? (T+690, 1056, 1296s )
I assume step 13 refers to the stage 3 depletion burn which based on the TLEs occurred around that time, 0618 UTC.
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Galactic Penguin SST on 09/07/2020 04:28 pm
The orbit for 46396U is 97.3°, 248x694 km.
The page from press kit is attached.


Very nice!  Can anyone translate steps 10, 12 and 13 on the timeline? (T+690, 1056, 1296s )
I assume step 13 refers to the stage 3 depletion burn which based on the TLEs occurred around that time, 0618 UTC.

Item 10 is the "3rd stage terminal guidance shutdown" - which probably means the YF-40s on the 3rd stage have a minimum thrust mode at the tail end of the flight, or that the RCS is involved.
Item 12 and 13 are 3rd stage fuel and oxidizer blow-down respectively - it seems passive blow-down is what the Chinese uses to lower the orbit of the 3rd stage post-flight.
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Alter Sachse on 09/07/2020 04:33 pm
05:57:04.918

Thanks to Liss !

https://forum.novosti-kosmonavtiki.ru/index.php?topic=18351.msg2033195#msg2033195
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Alter Sachse on 09/07/2020 04:39 pm
Gaofen 11 (01) 97.42° 94.02 min 249 693 km---> 478x506km (2019 April)
Gaofen 11-02   97.33° 94.02 min 248 694 km
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Liss on 09/07/2020 05:13 pm
05:57:04.918

Thanks to Liss !

https://forum.novosti-kosmonavtiki.ru/index.php?topic=18351.msg2033195#msg2033195
No, thanks to the Chinese author of posting http://9ifly.spacety.com/forum.php?mod=redirect&goto=findpost&ptid=93689&pid=764216&fromuid=1812
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Alter Sachse on 09/07/2020 05:22 pm
05:57:04.918

Thanks to Liss !

https://forum.novosti-kosmonavtiki.ru/index.php?topic=18351.msg2033195#msg2033195
No, thanks to the Chinese author of posting http://9ifly.spacety.com/forum.php?mod=redirect&goto=findpost&ptid=93689&pid=764216&fromuid=1812
Well, thanks to both of them.
I have not found the chinese source.
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: jak Kennedy on 09/07/2020 07:46 pm
Perhaps grid fins would be useful.

https://www.dailymail.co.uk/sciencetech/article-8706837/Chinas-Long-March-4B-rocket-booster-explodes-crashing-nearby-town.html
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Steven Pietrobon on 09/08/2020 07:24 am
Launch video.

https://www.youtube.com/watch?v=isrCo_6G6I4
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: input~2 on 09/08/2020 07:48 am
More launch videos

https://tv.cctv.com/2020/09/08/VIDEVR8EBi9GJyfs7wwZH1Py200908.shtml

https://tv.cctv.com/2020/09/07/VIDEh2bim6vEYvbnhE2OoOfn200907.shtml
Title: Re: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Steven Pietrobon on 09/08/2020 08:35 am
Screen grabs. The launch control room screens were censored.
Title: Gaofen-11 (02) - CZ-4B - Taiyuan - September 7, 2020 (05:57 UTC)
Post by: Star One on 09/09/2020 04:36 pm
Related to this launch is this new article by Eric Berger.

Quote
As often happens with the first stages of Chinese rockets launching from the inland Taiyuan facility, the spent Long March 4B booster fell downstream of the spaceport. In this case, it landed near a school, creating a predictably large cloud of toxic gas.

https://arstechnica.com/science/2020/09/another-chinese-rocket-falls-near-a-school-creating-toxic-orange-cloud/