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International Space Flight (ESA, Russia, China and others) => Chinese Launchers => Topic started by: beidou on 12/29/2014 04:45 am

Title: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: beidou on 12/29/2014 04:45 am
According to Chinese news reports: this project was kicked off on Dec 26th, and the principal contractor is the National Administration of Surveying, Mapping and Geoinformation of China (NASMG). Gaofen-7 will have similar but better capability than that of Ziyuan-3, which was launched at the beginning of 2012.
Title: Re: Gaofen-7 - CZ-2D - Jiuquan - December 2018
Post by: Satori on 09/04/2018 03:54 pm
Launch to take place in December 2018.
Title: Re: Gaofen-7 - CZ-2D - Jiuquan - 2019
Post by: zandr on 03/21/2019 08:09 pm
http://www.xinhuanet.com/english/2019-03/21/c_137913427.htm
Quote
Source: Xinhua| 2019-03-21 20:38:42
BEIJING, March 21 (Xinhua) ...
Zhang Kejian, vice minister of industry and information technology and head of SASTIND and CNSA, said at a press conference that after the launch of the Gaofen-7 satellite later this year, China will complete the construction of its space-based Earth observation system with seven high-resolution satellites...
Title: Re: Gaofen-7 - CZ-2D - Jiuquan - 2019
Post by: Galactic Penguin SST on 09/30/2019 12:58 am
Launch scheduled for November 2019 according to 9ifly.

BTW past data gives the satellite mass as 2400 kg with the orbit altitude at 500 km, so (confirmed by official reports) this will be launched on a CZ-4B out of Taiyuan instead.
Title: Re: Gaofen-7 - CZ-2D - Jiuquan - 2019
Post by: tehwkd on 09/30/2019 02:31 am
Launch scheduled for November 2019 according to 9ifly.

BTW past data gives the satellite mass as 2400 kg with the orbit altitude at 500 km, so (confirmed by official reports) this will be launched on a CZ-4B out of Taiyuan instead.

November is based on:
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 2019
Post by: tehwkd on 11/02/2019 03:16 am
Post has been updated to 0400 UTC tomorrow (Nov3)


Launch possibly happening today around 0400 UTC. No notams and haven't found a second source yet

https://twitter.com/LaunchStuff/status/1190481693351776256
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019
Post by: Satori on 11/02/2019 09:25 am
Gaofen-7 and three small satellites:

-  high-altitude test satellite developed by Shenzhen Aerospace Red Sea Special Satellite Co., Ltd.

- Sudan Science Experiment Satellite No.1 (?)

- Tianyi's Space Science and Technology Research Institute Co., Ltd, Xiaoxiang-8
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019
Post by: zubenelgenubi on 11/02/2019 10:28 am
Gunter lists Gaofen-7 (https://space.skyrocket.de/doc_sdat/gf-7.htm) as a similar, yet improved Ziyuan-3 (https://space.skyrocket.de/doc_sdat/zy-3.htm).

The previous 2 ZY-3's were launched to SSO's with a LTDN circa 10:30 am (https://directory.eoportal.org/web/eoportal/satellite-missions/v-w-x-y-z/zy-3a).  Both launched at 03:17 UTC.

(LTDN = local time descending node)

ZY-3 #1 launch thread (https://forum.nasaspaceflight.com/index.php?topic=26375.0)
ZY-3 #2 launch thread (https://forum.nasaspaceflight.com/index.php?topic=33321.0)
***

Belated congratulations on another international "two-fer" orbital launch day (UTC):
Cygnus NG-12,
this launch.
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019
Post by: Steven Pietrobon on 11/03/2019 01:16 am
Here's the 9ifly thread. There is a report of fog at the launch site.

http://www.9ifly.cn/thread-14212-5-1.html
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019
Post by: Steven Pietrobon on 11/03/2019 01:33 am
The first satellite is called 精致高分试验卫星 or Exquisite High-score Test Satellite or Jingzhi Gaofen Shiyan Weixing.

The second satellite is called 苏丹科学实验卫星一号 or Sudan Scientific Experimental Satellite 1.

The third satellite is called 潇湘一号08星 or Xiaoxiang-1 08.

http://www.9ifly.cn/forum.php?mod=redirect&goto=findpost&ptid=14212&pid=688559

Space insights
Today 11:53 From SpaceNews Superword Edited
Launch Forecast: Tomorrow (November 3) at noon, China will launch the High Score 7 satellite and three small satellites with the Long March IV B carrier rocket at the Taiyuan Satellite Launch Center. The three small satellites are the exquisite high-score test satellite developed by Shanghai Aerospace Technology Research Institute, the Development of Sudan Science Experimental Satellite One by Shenzhen Aerospace Oriental Red Sea Satellite Co., Ltd., and the Xiang-1 08 star developed by Changsha Tianyi Space Science and Technology Research Institute Co., Ltd.
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019
Post by: Steven Pietrobon on 11/03/2019 01:41 am
This post is estimating launch at about 3:20 UTC.

http://www.9ifly.cn/forum.php?mod=redirect&goto=findpost&ptid=14212&pid=688583

Guess about 11:20 launch
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019
Post by: GELORD on 11/03/2019 02:14 am
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019
Post by: Steven Pietrobon on 11/03/2019 02:20 am
Launch should be happening about now.
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019
Post by: Galactic Penguin SST on 11/03/2019 02:33 am
Liftoff confirmed.

Picture from somewhere near the launch site.
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019
Post by: tehwkd on 11/03/2019 02:50 am
SUCCESS, T-0 0322 UTC

Quote
[Forward congratulations! #高分七号星发射成功# The[mighty] reporter learned from the National Space Administration that at 11:22 today, China successfully launched the high-scoring satellite No. 7 with the Long March 4B carrier rocket at the Taiyuan Satellite Launch Center. The high-scoring satellite No. 7 is China's first civilian sub-meter optical transmission stereo mapping satellite. After the star runs, it will play an important role in land surveying and mapping, urban and rural construction, and statistical surveys. (CCTV reporter Li Xia)



https://www.weibo.com/2656274875/IetKPEAPZ?refer_flag=1001030103_&type=comment#_rnd1572753019416
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Steven Pietrobon on 11/03/2019 02:57 am
Launch images.

https://www.weibo.com/6528178851/IetL6w1au?type=comment#_rnd1572753388708
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Steven Pietrobon on 11/03/2019 03:00 am
Launch video.

https://www.weibo.com/3279752321/IetNSclVP

twitter.com/LaunchStuff/status/1190840955945078784
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: whiztech on 11/03/2019 03:03 am
short launch video from Our Space
https://weibo.com/tv/v/IetObpCue
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: tehwkd on 11/03/2019 03:12 am
Our Space has deleted their photo and video posts. Here's hoping it doesn't mean anything...
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Galactic Penguin SST on 11/03/2019 03:37 am
Our Space has deleted their photo and video posts. Here's hoping it doesn't mean anything...

The post has been resubmitted.

Also it seems thst this flight is also testing 1st stage grid fins as well.
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Steven Pietrobon on 11/03/2019 03:43 am
Grid fin!

http://www.9ifly.cn/forum.php?mod=redirect&goto=findpost&ptid=14212&pid=688818
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Steven Pietrobon on 11/03/2019 03:48 am
Some other images.

http://www.jintiankansha.me/t/MLxU1u1RUF
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Galactic Penguin SST on 11/03/2019 03:52 am
Interestingly none of the rumored co-passengers have been mentioned in the reports so far. We will have to see if they are really flying with GF-7.

Edit: They are indeed flying on this flight.
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Steven Pietrobon on 11/03/2019 04:20 am
Report on one the satellites. Article says that 精致一号/Jingzhi 1/Exquisite 1 was launched in November 2017, but I can't find the corresponding launch for this.

"On November 3, 2019, at 11:22:39, the Long March 4B carrier rocket ignited at the Taiyuan Satellite Launch Center, successfully carried out a four-star launch, successfully put the exquisite high-score test satellite into a predetermined orbit, the exquisite high-score test satellite is the second satellite of the exquisite microsatellite platform, It is also the first application of the platform on high-score remote sensing payloads.
...
The series' debut star, the Exquisite One satellite, was successfully launched in November 2017 and has been in orbit for two years so far. High-score remote sensing "exquisite high score" satellite platform weighs about 30KG, load carrying capacity of up to 60KG, maximum load power is not less than 200W."

https://mp.weixin.qq.com/s/gYYHdZqeqfW9Vccfcdscow
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: tehwkd on 11/03/2019 04:39 am
Report on Jifeng satellite (Xiaoxiang No. 1 08 Star), the 15th satellite by Tianyi Research Institute


https://www.weibo.com/ttarticle/p/show?id=2309404434519905140746
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Steven Pietrobon on 11/03/2019 04:46 am
Short video showing the first stage return. Vehicle looked pretty steady coming in for a vertical landing.

https://www.weibo.com/3613317253/Ieu2tAOoF?type=comment

twitter.com/LaunchStuff/status/1190865283357007877
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Steven Pietrobon on 11/03/2019 05:15 am
Y38. Landing mission was called SGD-01.

http://www.9ifly.cn/forum.php?mod=redirect&goto=findpost&ptid=14212&pid=688901
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: whiztech on 11/03/2019 06:15 am
first object

Quote
1 44703U 19072A   19307.26107553 -.00000072  00000-0  00000+0 0  9995
2 44703  97.4860  20.0004 0011496 267.9276 150.8970 15.22978440    13

505 km x 489 km, 97.49
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Galactic Penguin SST on 11/03/2019 08:23 am
https://twitter.com/LaunchStuff/status/1190921856519413760
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Liss on 11/03/2019 08:45 am
Report on one the satellites. Article says that 精致一号/Jingzhi 1/Exquisite 1 was launched in November 2017, but I can't find the corresponding launch for this.

The series' debut star, the Exquisite One satellite, was successfully launched in November 2017 and has been in orbit for two years so far. High-score remote sensing "exquisite high score" satellite platform weighs about 30KG, load carrying capacity of up to 60KG, maximum load power is not less than 200W.

https://mp.weixin.qq.com/s/gYYHdZqeqfW9Vccfcdscow

Hede-1 (HEAD-1) on 15 Nov 2017?
It was described as having "exquisite" satellite platform (精致卫星平台).
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: eeergo on 11/03/2019 08:49 am
.

So why is there a quite noticeable exhaust contrail?
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: tehwkd on 11/03/2019 09:32 am
So why is there a quite noticeable exhaust contrail?

n2o4 venting? Maybe trying to avoid the smashdown boom that the gridfinned lm2c had or perhaps using it as a visual indicator to find it more easily?
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: eeergo on 11/03/2019 10:49 am
So why is there a quite noticeable exhaust contrail?

n2o4 venting? Maybe trying to avoid the smashdown boom that the gridfinned lm2c had or perhaps using it as a visual indicator to find it more easily?

Doesn't look reddish (could be the illumination though), looks almost like a hidrocarbon-rich sooty exhaust similar to an aircraft's. Just wondering if there's any open loop separate system powering the fins that may be causing it.
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: tehwkd on 11/03/2019 11:27 am
So why is there a quite noticeable exhaust contrail?

n2o4 venting? Maybe trying to avoid the smashdown boom that the gridfinned lm2c had or perhaps using it as a visual indicator to find it more easily?

Doesn't look reddish (could be the illumination though), looks almost like a hidrocarbon-rich sooty exhaust similar to an aircraft's. Just wondering if there's any open loop separate system powering the fins that may be causing it.

Details about these fins haven't been released but the ones in the summer launch of Long March 2C were electric. My guess is that the video is of low enough quality filmed far enough away that it could be orange/red but we don't have enough pixels to be sure.
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Alter Sachse on 11/03/2019 12:22 pm

https://www.youtube.com/watch?v=A7EbkUoz_kA
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Alter Sachse on 11/03/2019 12:37 pm
https://www.youtube.com/watch?v=Sz2ewmzsLIQ

17:25....18:10

Control room screen censored  :(
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: tehwkd on 11/03/2019 01:23 pm
https://twitter.com/pbdes/status/1190996368791416833

Quote
China's @CGWIC Long March 4B rocket launches Chinese smallsat builder #Spacety 6U cubesat carrying 1st solid-iodine propulsion unit from @ThrustMe_  of France. Satellite has deployed & is communicating. Switch-on & results from ThrustME unit expected w/in a week.
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Chris Bergin on 11/03/2019 01:34 pm
Rui's article!

https://www.nasaspaceflight.com/2019/11/63864/

https://twitter.com/NASASpaceflight/status/1191000580543729666
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Liss on 11/03/2019 02:26 pm
The correct transcription for the Tianyi satellite is Dianfeng.
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Satori on 11/03/2019 02:55 pm
The correct transcription for the Tianyi satellite is Dianfeng.

So, Xianxiang-1-8 is incorrect or Dianfeng is another designation for the satellite?
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Liss on 11/03/2019 03:09 pm
The correct transcription for the Tianyi satellite is Dianfeng.

So, Xianxiang-1-8 is incorrect or Dianfeng is another designation for the satellite?
Yes, a personal name Dianfeng (巅峰号) in addition to the serial name Xiaoxiang-1-08 and the sequential Tianyi-15.
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: jcm on 11/03/2019 03:30 pm
Report on one the satellites. Article says that 精致一号/Jingzhi 1/Exquisite 1 was launched in November 2017, but I can't find the corresponding launch for this.

"On November 3, 2019, at 11:22:39, the Long March 4B carrier rocket ignited at the Taiyuan Satellite Launch Center, successfully carried out a four-star launch, successfully put the exquisite high-score test satellite into a predetermined orbit, the exquisite high-score test satellite is the second satellite of the exquisite microsatellite platform, It is also the first application of the platform on high-score remote sensing payloads.
...
The series' debut star, the Exquisite One satellite, was successfully launched in November 2017 and has been in orbit for two years so far. High-score remote sensing "exquisite high score" satellite platform weighs about 30KG, load carrying capacity of up to 60KG, maximum load power is not less than 200W."

https://mp.weixin.qq.com/s/gYYHdZqeqfW9Vccfcdscow


At www.lzsat.com we learn that HEAD-1 and today's Jinghzhi gaofan shiyan weixing were built by Shanghai Lizheng Satellite Application Technology Co. Ltd.  上海利正卫星应用技术有限公司以, founded in Nov 2012 and affiliated to the CASC 5th Institute. Unclear to me what the current status of HEAD (Beijing HEAD Aerospace Tech Co Ltd) is and what its relationship to Lizheng is (just customer for the first sat I guess).
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: jcm on 11/03/2019 03:32 pm
The correct transcription for the Tianyi satellite is Dianfeng.

Yes, google translate shows Dianfeng in the transliteration but in the English translation box wrecks it as  'Jifeng', "Fengfeng' and various other things depending on the sentence!

Dianfeng means 'summit' I gather?
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Galactic Penguin SST on 11/03/2019 03:52 pm
Dianfeng means 'summit' I gather?

Affirmative. ("peak" or "pinnacle" would also work as translations depending on the usage)  :)
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: jcm on 11/03/2019 03:55 pm
The first satellite is called 精致高分试验卫星 or Exquisite High-score Test Satellite or Jingzhi Gaofen Shiyan Weixing.

The second satellite is called 苏丹科学实验卫星一号 or Sudan Scientific Experimental Satellite 1.

The third satellite is called 潇湘一号08星 or Xiaoxiang-1 08.

http://www.9ifly.cn/forum.php?mod=redirect&goto=findpost&ptid=14212&pid=688559

Space insights
Today 11:53 From SpaceNews Superword Edited
Launch Forecast: Tomorrow (November 3) at noon, China will launch the High Score 7 satellite and three small satellites with the Long March IV B carrier rocket at the Taiyuan Satellite Launch Center. The three small satellites are the exquisite high-score test satellite developed by Shanghai Aerospace Technology Research Institute, the Development of Sudan Science Experimental Satellite One by Shenzhen Aerospace Oriental Red Sea Satellite Co., Ltd., and the Xiang-1 08 star developed by Changsha Tianyi Space Science and Technology Research Institute Co., Ltd.

What google is translating as "Shenzhen Aerospace Oriental Red Sea Satellite Co., Ltd" is Shenzhen Aerospace DFH HIT Satellite Co Ltd,
DFH = Dongfanghong, "The East Is Red", name of China's first sat and a component of several related company names.
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: jcm on 11/03/2019 04:13 pm
A remaining mystery is this Sudan Science test satellite.   ? I haven't been able to find any evidence of a China-Sudan joint satellite technology agreement although it seems plausible. It doesn't seem to be a mistranslation since the English xinhua article http://www.xinhuanet.com/english/2019-11/03/c_138525378.htm explicitly says it's developed for Sudan. If so, the National Centre for Research and the Sudan Univ. of Science and Tech in Khartoum seem likely participants.
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: koroljow on 11/03/2019 04:20 pm
Jingzhi Gaofen Shiyan Weixing = Huangpu-1 (黄埔一号)
first experimental satellite for a planned 90 satellite LEO-constellation (named Dawan Zhitong or Grand Bay Zhitong)
source: http://scitech.people.com.cn/n1/2019/1103/c1007-31434697.html (http://scitech.people.com.cn/n1/2019/1103/c1007-31434697.html)
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Liss on 11/03/2019 07:47 pm
What google is translating as "Shenzhen Aerospace Oriental Red Sea Satellite Co., Ltd" is Shenzhen Aerospace DFH HIT Satellite Co Ltd
Shenzhen Aerospace DFH Haite Satellite Co Ltd.
I think this Haite is a Chinese transcription of high-tech, but I may be wrong.
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: eeergo on 11/04/2019 10:28 am

Interstage disposal strategy, gridfins included (TM): push it to the bottom of the crevass with some sticks.


I do hope it was just a way to stabilize it and pick it up more easily.  ::)


https://twitter.com/LaunchStuff/status/1191240973210279936
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Semmel on 11/04/2019 01:12 pm
Fantastic to see China advancing on vertical landing. Fingers crossed that they get it working. Probably not with this version of the long march series though. But I love the steps they take :)
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Alter Sachse on 11/05/2019 06:58 am
Does anyone know the exact launch time?
(Milliseconds)
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Liss on 11/06/2019 11:07 am
Jingzhi Gaofen Shiyan Weixing = Huangpu-1 (黄埔一号)
first experimental satellite for a planned 90 satellite LEO-constellation (named Dawan Zhitong or Grand Bay Zhitong)
source: http://scitech.people.com.cn/n1/2019/1103/c1007-31434697.html (http://scitech.people.com.cn/n1/2019/1103/c1007-31434697.html)
So the first one is Huangpu-1 and the second is SRSS-1.
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: input~2 on 11/06/2019 02:13 pm
A remaining mystery is this Sudan Science test satellite.   ? I haven't been able to find any evidence of a China-Sudan joint satellite technology agreement although it seems plausible. It doesn't seem to be a mistranslation since the English xinhua article http://www.xinhuanet.com/english/2019-11/03/c_138525378.htm (http://www.xinhuanet.com/english/2019-11/03/c_138525378.htm) explicitly says it's developed for Sudan. If so, the National Centre for Research and the Sudan Univ. of Science and Tech in Khartoum seem likely participants.
Sudan launches its first ever satellite in partnership with China (https://www.aljazeera.com/news/2019/11/sudan-launches-satellite-partnership-china-191106070709063.html)
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: eeergo on 11/07/2019 01:02 am
Grid fin!

http://www.9ifly.cn/forum.php?mod=redirect&goto=findpost&ptid=14212&pid=688818

Interesting: it seems the grid fins for this flight are made in titanium alloy (like F9-B5's?), but not forged -- instead laser-welded into shape from 38 individual pieces by a 6-axis robot. Also, the fins used in this flight are a different (in which way) from July's CZ-2C's.

https://mp.weixin.qq.com/s/h50mmOiCPyPhzA4OC4Z76A

Also, from space:

https://twitter.com/LaunchStuff/status/1192042883416776704
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Steven Pietrobon on 11/07/2019 02:15 am
Just in case the tweet gets deleted!
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: GELORD on 11/08/2019 08:15 am
China confirms reception of data from Gaofen-7 satellite.
http://www.xinhuanet.com/english/2019-11/08/c_138539279.htm
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: eeergo on 11/10/2019 01:50 am
Grid fin!

http://www.9ifly.cn/forum.php?mod=redirect&goto=findpost&ptid=14212&pid=688818

Interesting: it seems the grid fins for this flight are made in titanium alloy (like F9-B5's?), but not forged -- instead laser-welded into shape from 38 individual pieces by a 6-axis robot. Also, the fins used in this flight are a different (in which way) from July's CZ-2C's.

https://mp.weixin.qq.com/s/h50mmOiCPyPhzA4OC4Z76A


Post-flight: https://twitter.com/LaunchStuff/status/1193137737588727808
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Satori on 12/12/2019 09:30 am
From Xinhua,

China releases first 3D images based on Earth observation satellite (http://www.xinhuanet.com/english/2019-12/10/c_138620096.htm).
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Satori on 12/12/2019 09:32 am
From Xinhua,

China improves space-based observation of Earth (http://www.xinhuanet.com/english/2019-12/10/c_138620146.htm).
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: FutureSpaceTourist on 03/13/2020 03:20 pm
twitter.com/aj_fi/status/1238490845185224704

Quote
Close up look at the grid fins on a Long March 4B launched in November, with engineer Chen Xuewei. These apparently reduced the target drop zone by 85%. Images: SAST mp.weixin.qq.com/s/ReFpPyolP6n6

https://twitter.com/aj_fi/status/1238490848180002820

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An earlier look:
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Alter Sachse on 03/13/2020 04:20 pm
XX 1-08 satellite

https://twitter.com/AJ_FI/status/1238497454733111296
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: Satori on 08/21/2020 12:28 pm
From Xinhua,

China's Gaofen-7 satellite put into service (http://www.xinhuanet.com/english/2020-08/20/c_139305283.htm).

The China National Space Administration announced Thursday that the Gaofen-7 Earth observation satellite has been put into service, representing significant progress for the country's surveying and mapping capabilities.
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: zubenelgenubi on 08/21/2020 05:51 pm
From Xinhua,
Where is this?
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: luhai167 on 08/24/2020 05:59 pm
From Xinhua,
Where is this?
The City of Huludao.
https://en.wikipedia.org/wiki/Huludao


It's also where all of China's nuclear submarine are built by the way.
Title: Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
Post by: plutogno on 10/30/2020 09:30 am
the latest issue of the journal Chinese Space Science & Technology (Volume 40 Issue 5) has a few papers (in Chinese) on GF-7, its overall design and its orbit design
http://zgkj.cast.cn/EN/1000-758X/home.shtml