NASASpaceFlight.com Forum
International Space Flight (ESA, Russia, China and others) => Chinese Launchers => Topic started by: jcm on 09/27/2020 05:49 am
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China's SAST launched a CZ-4B at 0323 UTC Sep 27, placing two enviromental/disaster management satellites in orbit. The satellites are 环境减灾二号A星
(Huanjing jianzai er hao A xing) and 环境减灾二号B星 (Huanjing jianzai er hao B xing).
http://www.xinhuanet.com/politics/2020-09/27/c_1126547379.htm (http://www.xinhuanet.com/politics/2020-09/27/c_1126547379.htm)
http://www.spaceflightfans.cn/80544.html (http://www.spaceflightfans.cn/80544.html)
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China sends two environmental monitoring satellites into space
http://www.xinhuanet.com/english/2020-09/27/c_139400747.htm
TAIYUAN, Sept. 27 (Xinhua) -- China has successfully launched two environmental monitoring satellites from the Taiyuan Satellite Launch Center in northern Shanxi Province on Sunday.
A Long March-4B rocket carrying the HJ-2A and HJ-2B satellites took off at 11:23 a.m. (Beijing Time), according to the launch center.
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http://www.xinhuanet.com/tech/2020-09/27/c_1126547246.htm
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http://9ifly.spacety.com/thread-93857-1-1.html
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A bit more detailed article
China sends two environmental monitoring satellites into space
http://www.xinhuanet.com/english/2020-09/27/c_139400928.htm
TAIYUAN, Sept. 27 (Xinhua) -- China has successfully launched two environmental monitoring satellites from the Taiyuan Satellite Launch Center in northern Shanxi Province on Sunday.
A Long March-4B rocket carrying the HJ-2A and HJ-2B satellites took off at 11:23 a.m. (Beijing Time), according to the launch center.
They will replace the HJ-1A and HJ-1B, the previous generation of environmental monitoring satellites, to provide services concerning environmental protection, natural resources, water conservancy, agriculture and forestry, according to the satellite developer China Academy of Space Technology (CAST).
The HJ-2A and HJ-2B are 16-meter optical satellites with high mobility, precision control and stability, as well as strong load adaptability and long lifespans.
The satellites can provide 16-meter multispectral, 48-meter hyperspectral and infrared image data.
They will support the monitoring of natural disasters and land utilization, regulation and protection of water resources, dynamic monitoring of crop areas and assessment of yield, as well as quake emergency rescue.
The HJ-1A and HJ-1B were launched in 2008 and provided remote sensing data for disaster relief during the 2008 earthquake in Wenchuan County, Sichuan Province, the 2010 earthquake in Yushu Tibetan Autonomous Prefecture of Qinghai Province and the 2010 mudslide in Zhouqu County, Gansu Province.
Sunday's launch was the 348th by the Long March rocket series.
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Launch video
https://tv.cctv.com/2020/09/27/VIDENlMGnzO2E50rvOvC1A4Q200927.shtml
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These 2 satellites are replacements for the 12 years old HJ-1A/B in the medium resolution Earth observation role. Unlike the HJ-1 pair (https://directory.eoportal.org/web/eoportal/satellite-missions/h/hj-1) both satellites have the same identical instrument suite, upgraded versions of the 3 HJ-1 instruments plus an atmospheric correction instrument.
The WVC now uses 4 CCD cameras for a maximum resolution of 16 m at 800 km image swath width. The IRMSS and HSI also got upgraded to 48 m resolution.
These 2 satellites were in the official plans for some time and was recently floated as being launched soon, also people noticed a gap around today where a CZ-4 series launch may well take place, but the final confirmation never came. :P
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launch video
https://www.youtube.com/watch?v=wwvqb4D4T5o
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https://tv.cctv.com/2020/09/27/VIDEyt0Vz9AKhgREm07dQoQl200927.shtml
T-0: 3:23:04.609 UTC
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These 2 satellites were in the official plans for some time and was recently floated as being launched soon, also people noticed a gap around today where a CZ-4 series launch may well take place, but the final confirmation never came. :P
Circa 3 week intervals:
China launches in 2020 from Taiyuan Launch Complex 9 (times in UTC)
June 10 (18:31:24) - CZ-2C (Y40) - TSLC, LC9 - HY-1D Haiyang-1D
July 3 (03:10) - CZ-4B (Y43) - TSLC, LC9 - Gaofen Duomo, Xibaipo 'Babi-2' (BY70-2) 24 days
July 25 (03:13) - CZ-4B (Y45) - TSLC, LC9 - ZY-3 Ziyuan-3 (3); Longxia Yan; Tianqi-10 22 days
? August 15 (~04:00) - CZ-2C - TSLC, LC9 - suborbital DF-ZF target ? 21 days
September 7 (05:57:04.918) - CZ-4B (Y46) - TSLC, LC9 - Gaofen-11 (02) 23 days
September 27 (03:23:04.609) - CZ-4B (Y42) - TSLC, LC9 - HJ-2A, HJ-2B 20 days
Also noting: Apparently, no published NOTAMs/NOTMARs as a heads-up? Any pilots traversing such a zone would have been notified when filing a flight plan?
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https://twitter.com/TSKelso/status/1310290436502683648
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These 2 satellites were in the official plans for some time and was recently floated as being launched soon, also people noticed a gap around today where a CZ-4 series launch may well take place, but the final confirmation never came. :P
Circa 3 week intervals:
China launches in 2020 (times in UTC)
June 10 (18:31:24) - CZ-2C (Y40) - TSLC, LC9 - HY-1D Haiyang-1D
July 3 (03:10) - CZ-4B (Y43) - TSLC, LC9 - Gaofen Duomo, Xibaipo 'Babi-2' (BY70-2) 24 days
July 25 (03:13) - CZ-4B (Y45) - TSLC, LC9 - ZY-3 Ziyuan-3 (3); Longxia Yan; Tianqi-10 22 days
? August 15 (~04:00) - CZ-2C - TSLC, LC9 - suborbital DF-ZF target ? 21 days
September 7 (05:57:04.918) - CZ-4B (Y46) - TSLC, LC9 - Gaofen-11 (02) 23 days
September 27 (03:23:04.609) - CZ-4B (Y42) - TSLC, LC9 - HJ-2A, HJ-2B 20 days
Also noting: Apparently, no published NOTAMs/NOTMARs as a heads-up. Any pilots traversing such a zone would have been notified when filing a flight plan?
If in flight would be via ATC or an ATIS message.
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Rui's take:
https://twitter.com/NASASpaceflight/status/1310374603102081025
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HJ-2A and HJ-2B have the same identical instrument suite. These are upgraded versions of the original HJ-1 instruments with the addition of an atmospheric correction instrument.
This is not true. In fact, the main instrument of four 16m cameras is an upgrade of Gaofen 1 instrument of the same design by the 508th institute.
Also, SITP designed the infrared camera for HJ-2 and the Anhui Institute of Optics and Fine Mechanics delivered the atmospheric corrector.
Still don't know if XIOPM made the hyperspectral imager as it did with HJ-1.
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Maybe this explains the missing NOTAMs? 🤔
https://twitter.com/Zarya_Info/status/1310527663992438785
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Maybe this explains the missing NOTAMs? 🤔
https://twitter.com/Zarya_Info/status/1310527663992438785
Nope.
They have already exchanged designations in the catalog: what was 2020-067B until 28 Sep 06:49 UTC is now 2020-067C and vice versa.
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Another launch video
https://tv.cctv.com/2020/09/27/VIDEpo10OUfhmA8JxtoTL8st200927.shtml
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Vehicle on the pad and animation showing deployment of the two satellites.
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https://twitter.com/planet4589/status/1310261393757700099?s=20 (https://twitter.com/planet4589/status/1310261393757700099?s=20)
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Both spacecraft started to rise their orbits.