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Gaofen-Multi-Mode & BY70-2 - CZ-4B - TSLC - July 3, 2020 (03:10 UTC)
by
Galactic Penguin SST
on 01 Jul, 2020 05:06
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A2437/20 - A TEMPORARY RESTRICTED AREA ESTABLISHED BOUNDED BY: N320734E1100137-N320430E1102335-N312707E1101623-N313007E1095436 BACK TO START. VERTICAL LIMITS:GND-UNL. ALL ACFT SHALL BE FORBIDDEN TO FLY INTO THE RESTRICTED AREA. GND - UNL, 03 JUL 03:01 2020 UNTIL 03 JUL 03:34 2020. CREATED: 30 JUN 11:45 2020----------------------------------------------------------------------------------------------
I'm not quite sure how to translate the name of this GF series satellite ("multi-imaging mode" is the closest thing I can think of), but this project has apparently been floating around for the last few years already. Specifications are for a 2400 kg satellite with 0.5 m panchormatic/ 2 m multi-spectral (8 wave bands) imaging resolution and a planned mission life of 8+ years.
The satellite is the first use of CAST's "Agility Remote Sensing Medium Platform" (see below, from previous years' Zhuhai Airshow), which gives it a pointing accuracy of 10 m without control points, spacecraft body pointing capability of ±45º in all directions and movement time of < 20 s in rotating POV by 25º. It is mentioned in official sources as similar in capability as DigitalGlobe's Worldview-2.
Sources
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#1
by
zubenelgenubi
on 01 Jul, 2020 05:23
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Cross-post; secondary payload? My
bold.
http://9ifly.spacety.com/thread-88710-2-1.html
"太原有高分多模及搭载星西柏坡星、资源三号03星，那就是说7月有两发长四乙任务"
→ "Taiyuan's state-of-the-art multimode and equipped with Xibaipoxing and Resource 3 03 stars, which means that there are two long four missions in July
If the translation is correct, there are two CZ-4B launches scheduled for July, which include:
- Xibaipo and a Gaofen satellite
- Ziyuan-3 03
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#2
by
Liss
on 01 Jul, 2020 16:49
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I would group the names as follows:
太原有[高分多模]及[搭载星西柏坡星]、[资源三号03星]，那就是说7月有两发[长四乙]任务
Taiyuan [Gaofen Multimode] with [Piggyback Star Xibaipo Star],
[Resource Three 03 Star],
that means there are two [CZ-4B] missions in July
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#3
by
Olaf
on 02 Jul, 2020 17:35
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#4
by
GELORD
on 02 Jul, 2020 21:25
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科普卫星 “西柏坡号”（八一02星）/ Xibaipo
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#5
by
Steven Pietrobon
on 03 Jul, 2020 03:04
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#6
by
Steven Pietrobon
on 03 Jul, 2020 03:09
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Launch should be happening about now.
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#7
by
Steven Pietrobon
on 03 Jul, 2020 03:33
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#8
by
Galactic Penguin SST
on 03 Jul, 2020 03:34
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Confirmed launch success, T-0 was at 03:10 UTC.
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#9
by
Steven Pietrobon
on 03 Jul, 2020 03:34
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Launch success!
'Turn up congratulations! China successfully launched a high-score multi-mode satellite on July 3 at 11:10 a.m., China successfully launched a high-resolution multi-mode integrated imaging satellite with the Long March IV B carrier rocket at the Taiyuan Satellite Launch Center. The satellite is a civil optical remote sensing satellite with sub-meter resolution, which can realize a variety of imaging modes, and its application in orbit will further enhance the technical level of remote sensing satellite in China, and meet the needs of the user departments of the relevant industry for high-precision remote sensing image data. The mission carried the launch of the "Sibaipo" youth science satellite. (Feng Hua)"
http://9ifly.spacety.com/forum.php?mod=redirect&goto=findpost&ptid=88710&pid=750724
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#10
by
GELORD
on 03 Jul, 2020 03:37
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【长四乙火箭“一箭双星”发射圆满成功】7月3日11时10分，长征四号乙运载火箭在太原卫星发射中心将高分辨率多模综合成像卫星及搭载的“西柏坡号”科普卫星（八一02星）发射升空，卫星顺利进入预定轨道，发射取得圆满成功。此次发射是长征系列运载火箭的第337次飞行。
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#11
by
Steven Pietrobon
on 03 Jul, 2020 03:40
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Xibaipo is also called Bayi 02.
"China Aerospace Science and Technology Group
10 seconds ago
Watch the launch of the long four-b rocket "one arrow two stars" launch success: July 3, 11:10, the Long March IV B carrier rocket in Taiyuan Satellite Launch Center will be high-resolution multi-mode integrated imaging satellite and the "Xibaipo" Kop satellite (Bayi 02 stars) launched, the satellite successfully entered the scheduled orbit, the launch was a complete success. The launch was the 337th flight of the Long March series of launch vehicles."
http://9ifly.spacety.com/forum.php?mod=redirect&goto=findpost&ptid=88710&pid=750729
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#12
by
Galactic Penguin SST
on 03 Jul, 2020 03:45
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CZ-4B s/n Y43 was used for this launch.
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#13
by
Steven Pietrobon
on 03 Jul, 2020 03:47
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#14
by
Steven Pietrobon
on 03 Jul, 2020 03:50
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More launch preparation photos. Seems like a new satellite separation device was used.
https://mp.weixin.qq.com/s?__biz=MjM5MjMxOTcwMQ==&mid=2651278410&idx=1&sn=e8a5f208ec432cd7fdb7ee676cd0487e"The launch was the first of its kind in the 2020 Long March IV series of launch vehicles, which also kicked off the series' high-density launch this year. For the first time, the task used the newly developed four-point connection unlock device and the precise drop-off control technology to change the position of the original secondary fall zone.
In order to meet the requirements of the new platform interface of the main star, the eight-house lasted 3 years of research and development, tailored to the first flight of the four-point connection unlocking device. The separation device underwent 3 rounds of design optimization iteration and more than 100 development tests, providing a strong support and low impact environment for the satellite by means of low impact high reliability, high strength and light weight. Compared with the previous package connection unlock device, the product has the advantages of "small impact, light weight and wide adaptability".
The precision drop zone control adopted by this mission, using the yaw maneuvering method to change the direction of the rocket at all levels of flight segments, greatly solved the safety problem of the landing area."
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#15
by
Galactic Penguin SST
on 03 Jul, 2020 07:10
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The GF satellite and its 1 meter diameter main camera:
Source
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#16
by
Galactic Penguin SST
on 03 Jul, 2020 07:11
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And.....we got a mission pamplet for this launch! (translation available on request)
Target orbit is 644 km altitude SSO at 98.0 degrees inclination.
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#17
by
Bean Kenobi
on 03 Jul, 2020 07:16
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Xibaipo is also called Bayi 02.
"China Aerospace Science and Technology Group
10 seconds ago
Watch the launch of the long four-b rocket "one arrow two stars" launch success: July 3, 11:10, the Long March IV B carrier rocket in Taiyuan Satellite Launch Center will be high-resolution multi-mode integrated imaging satellite and the "Xibaipo" Kop satellite (Bayi 02 stars) launched, the satellite successfully entered the scheduled orbit, the launch was a complete success. The launch was the 337th flight of the Long March series of launch vehicles."
http://9ifly.spacety.com/forum.php?mod=redirect&goto=findpost&ptid=88710&pid=750729
Bayi 02 : based on letters of this name (B and Y), and the fact there is no mention of a third payload, I think it is also called BY70-2 by AMSAT.
https://twitter.com/AMSAT/status/1278699806798512129
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#18
by
whiztech
on 03 Jul, 2020 07:41
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1 object so far
2020-042A / 45856: 649 km x 631 km, 98º
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#19
by
Alter Sachse
on 03 Jul, 2020 07:45
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#20
by
Alter Sachse
on 03 Jul, 2020 07:51
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#21
by
SciNews
on 03 Jul, 2020 08:24
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Short video of the preparations and launch
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#22
by
input~2
on 03 Jul, 2020 13:28
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#23
by
Alter Sachse
on 03 Jul, 2020 13:47
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#24
by
Chris Bergin
on 03 Jul, 2020 14:03
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#25
by
jcm
on 03 Jul, 2020 17:03
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And.....we got a mission pamplet for this launch! (translation available on request)
Target orbit is 644 km altitude SSO at 98.0 degrees inclination.
Can you translate items 10 and 11 in the launch sequence? (at 717 and 803 s)
I have
T+2:33 Stage 1 MECO
T+2:34 Stage 1 sep
T+2:57 Fairing sep
T+4:42 Stage 2 MECO
T+4:52 Stage 2 VECO (vernier engine cutoff)
T+4:53 Stage 2 sep
T+11:43 Stage 3 (burn? or MECO?)
T+11:57 (717s) - possibly stage 3 shutdown?
T+13:23 (803s) - possibly main payload sep?
T+14:03 BY-02 sep.
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#26
by
jcm
on 03 Jul, 2020 17:06
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The name 高分辨率多模综合成像卫星 parses out as Gao (High) Fen bian lu (resolution) duomo (Multimode) zonge (integrated) chengxiang
(imaging) weixing (satellite) per google translate. I am a bit surprised by the use of "gao fen bian lu" rather than just the
usual abbreviated "gao fen" - perhaps this means this satellite is not a Gaofen series satellite but just happens to have 'high resolution'
in the description.
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#27
by
Liss
on 03 Jul, 2020 19:32
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T+11:43 Stage 3 (burn? or MECO?)
Definitely shutdown.
T+13:23 (803s) - possibly main payload sep?
Yes, with a shorter name Gaofen duomo weixing.
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#28
by
Galactic Penguin SST
on 04 Jul, 2020 01:36
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And.....we got a mission pamplet for this launch! (translation available on request)
Target orbit is 644 km altitude SSO at 98.0 degrees inclination.
Can you translate items 10 and 11 in the launch sequence? (at 717 and 803 s)
I have
T+2:33 Stage 1 MECO
T+2:34 Stage 1 sep
T+2:57 Fairing sep
T+4:42 Stage 2 MECO
T+4:52 Stage 2 VECO (vernier engine cutoff)
T+4:53 Stage 2 sep
T+11:43 Stage 3 (burn? or MECO?)
T+11:57 (717s) - possibly stage 3 shutdown?
T+13:23 (803s) - possibly main payload sep?
T+14:03 BY-02 sep.
T+11:43 is 3rd stage shutdown
T+11:57 is “3rd stage terminal guidnace shutdown” - since the 3rd stage doesn’t have verniers I guess either the YF-40 engine has a low thrust mode or they are referring to using the RCS.
T+13:23 is indeed GF satellite separation.
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#29
by
Steven Pietrobon
on 04 Jul, 2020 05:06
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The Chinese are calling this GFDM or Gaofen Duomo (see last screen capture).
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#30
by
Conexion Espacial
on 23 Jan, 2022 20:22
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