Author Topic: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)  (Read 19029 times)

Offline Liss

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Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
« Reply #40 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.
This message reflects my personal opinion based on open sources of information.

Offline jcm

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Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
« Reply #41 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).
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Offline jcm

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Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
« Reply #42 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?
« Last Edit: 11/03/2019 03:32 pm by jcm »
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Offline Galactic Penguin SST

Dianfeng means 'summit' I gather?

Affirmative. ("peak" or "pinnacle" would also work as translations depending on the usage)  :)
Astronomy & spaceflight geek penguin. In a relationship w/ Space Shuttle Discovery. Current Priority: Chasing the Chinese Spaceflight Wonder Egg & A Certain Chinese Mars Rover

Offline jcm

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Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
« Reply #44 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.
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Offline jcm

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Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
« Reply #45 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.
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Offline koroljow

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Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
« Reply #46 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
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Offline Liss

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Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
« Reply #47 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.
This message reflects my personal opinion based on open sources of information.

Offline eeergo


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
-DaviD-

Offline Semmel

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Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
« Reply #49 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 :)

Offline Alter Sachse

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Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
« Reply #50 on: 11/05/2019 06:58 am »
Does anyone know the exact launch time?
(Milliseconds)
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Offline Liss

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Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
« Reply #51 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
So the first one is Huangpu-1 and the second is SRSS-1.
« Last Edit: 11/06/2019 11:08 am by Liss »
This message reflects my personal opinion based on open sources of information.

Offline input~2

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Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
« Reply #52 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 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

Offline eeergo

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
-DaviD-

Offline Steven Pietrobon

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Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
« Reply #54 on: 11/07/2019 02:15 am »
Just in case the tweet gets deleted!
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline GELORD

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Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
« Reply #55 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
与战士站岗、炊事员做饭一样,航天员是一种职业,工作就是飞行。

Offline eeergo

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
-DaviD-

Offline Satori

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Offline Satori

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Offline FutureSpaceTourist

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Re: Gaofen-7 - CZ-4B - Taiyuan - November 3, 2019 (03:22 UTC)
« Reply #59 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

Quote
An earlier look:

 

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