NASASpaceFlight.com Forum
International Space Flight (ESA, Russia, China and others) => Chinese Launchers => Topic started by: Satori on 05/13/2016 06:20 pm
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The launch of the Hard X-ray Modulation Telescope 'HXMT' is schedule for November 2016 using a Chang Zheng-2D launch vehicle from the Jiuquan Satellite Launch Center.
http://english.ihep.cas.cn/rs/fs/sm/SM/AH/ (http://english.ihep.cas.cn/rs/fs/sm/SM/AH/)
http://www.integral.soton.ac.uk/missions/HXMT.html (http://www.integral.soton.ac.uk/missions/HXMT.html)
http://astro.tsinghua.edu.cn/index.php?m=content&c=index&a=lists&catid=31 (http://astro.tsinghua.edu.cn/index.php?m=content&c=index&a=lists&catid=31)
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Launch is a few weeks (2 / 3?) away and no information about it.
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Delayed until 2017, it seems.
https://twitter.com/cnspaceflight/status/795264560055730177
AFAIK the delay became apparent a while back.
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HXMT, 550km@43°;
CAS-4A/4B， 524km@42°，march 31 ，2017。
one mission ？？
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HXMT to launch in June with two Zhuhai-1 video microsatellites for the Orbita system.
Launch vehicle is a CZ-4B.
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HXMT to launch in June with two Zhuhai-1 video microsatellites for the Orbita system.
Launch vehicle is a CZ-4B.
Launchsite is still Jiuquan?
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yes
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yes
Any source?
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yes
Any source?
the fact that parts of HXMT or a simulator was shipped to JSLC last year before being shipped back.
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HXMT satellite payload test unit stationed in the launching site.
http://www.spaceflightfans.cn/13424.html
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From Xinhua,
China's space telescope to see why black holes get "angry" (http://news.xinhuanet.com/english/2017-05/25/c_136315167.htm).
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From Xinhua,
China's space telescope to observe "big eaters" in universe (http://news.xinhuanet.com/english/2017-05/29/c_136323775.htm).
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From Xinhua,
China's space telescope to survey Milky Way (http://news.xinhuanet.com/english/2017-05/28/c_136321720.htm).
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I'm told that a rocket is in final process of stacking on the pad. type is unknown until later stages arrive.
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According to local tour reports the launch date will be around June 16. (http://bbs.9ifly.cn/forum.php?mod=redirect&goto=findpost&ptid=68546&pid=541859&fromuid=19646) ;)
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China's space telescope looking for gravitational wave breakthrough (http://news.xinhuanet.com/english/2017-05/30/c_136325488.htm).
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China's space telescope to observe pulsars in Milky Way (http://news.xinhuanet.com/english/2017-06/03/c_136336692.htm).
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I found this interesting presentation, delivered by Fangjun Lu in 2013:
The Current Status and Calibration Plan of the Hard X-ray Modulation Telescope Project
http://web.mit.edu/iachec/meetings/2013/Presentations/Lu.pdf
It gives this information:
Orbit: 550 km, 43 deg.
Mass: ~3000 kg
Instrument Mass: ~1000 kg
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This paper in 2004 in Advances in Space Research https://www.researchgate.net/publication/222235318_HXMT_satellite_for_space_hard_X-ray_observation explains why this orbit was chosen: to stay below (most of) the Van Allen belt and to minimize the effects of the South Atlantic Anomaly.
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The paper also summarizes the method used for hard X-ray imaging: collimated detector and the Direct Demodulation (DD) imaging technique.
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Regarding the launch vehicle change from CZ-2D to CZ-4B, I learn from Gunter's Space Page http://space.skyrocket.de/doc_lau_fam/df-5.htm , that a CZ-2D can launch a 3300 kg payload to LEO, while a CZ-4B can launch a 4200 kg payload to LEO.
Was the launch vehicle changed to provide a greater margin of performance?
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It seems that Satellogic's ÑuSat-3 "Milanesat" is also on board, and according to them (http://is-milanesat-in.space/) the launch is on June 15 at 03:15 UTC (also see here where I confirmed the launch time with their engineers (https://twitter.com/Cosmic_Penguin/status/874207813228150784)).
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I found this interesting presentation, delivered by Fangjun Lu in 2013:
The Current Status and Calibration Plan of the Hard X-ray Modulation Telescope Project
http://web.mit.edu/iachec/meetings/2013/Presentations/Lu.pdf
It gives this information:
Orbit: 550 km, 43 deg.
Mass: ~3000 kg
Instrument Mass: ~1000 kg
***
This paper in 2004 in Advances in Space Research https://www.researchgate.net/publication/222235318_HXMT_satellite_for_space_hard_X-ray_observation explains why this orbit was chosen: to stay below (most of) the Van Allen belt and to minimize the effects of the South Atlantic Anomaly.
***
The paper also summarizes the method used for hard X-ray imaging: collimated detector and the Direct Demodulation (DD) imaging technique.
***
Regarding the launch vehicle change from CZ-2D to CZ-4B, I learn from Gunter's Space Page http://space.skyrocket.de/doc_lau_fam/df-5.htm , that a CZ-2D can launch a 3300 kg payload to LEO, while a CZ-4B can launch a 4200 kg payload to LEO.
Was the launch vehicle changed to provide a greater margin of performance?
AFAIK, CZ-2D is still grounded from last years failure from TSLC so that is the reason for the switch.
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Hard X-ray Modulation Telescope HXMT
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CZ-4B serial number is Y31.
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NOTAMs were issued for today in China? Any news regarding this launch?
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HXMT is nammed '慧眼' - Huiyan (Eye).
Picture from the 9ifly.com Chinese space forum.
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Liftoff confirmed.
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Rui's article:
https://www.nasaspaceflight.com/2017/06/china-x-ray-telescope-long-march-4b/
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Just got the confirmation that the satellites are now in a good orbit.
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T-0 seems to be 03:00 UTC instead.
Source (http://cn.chinadaily.com.cn/2017-06/15/content_29756429.htm)
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This seems to be the home page for the OVS-1A/B Zhuhai sats
from Zhuhai Orbita Control Engineering Co.
http://www.myorbita.net/
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Zhuhai-1(01) 50 кg; Zhuhai-1(02) 80-100 kg
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China launches space telescope to search for black holes, pulsars
http://news.xinhuanet.com/english/2017-06/15/c_136367703.htm
JIUQUAN, June 15 (Xinhua) -- China launched its first X-ray space telescope to observe black holes, pulsars and gamma-ray bursts, via a Long March-4B rocket from Jiuquan Satellite Launch Center in northwest China's Gobi Desert at 11 a.m. Thursday.
The 2.5-tonne Hard X-ray Modulation Telescope (HXMT), dubbed Insight, was sent into an orbit of 550 kilometers above the earth to help scientists better understand the evolution of black holes, and the strong magnetic fields and the interiors of pulsars.
Through the telescope, scientists will also study how to use pulsars for spacecraft navigation, and search for gamma-ray bursts corresponding to gravitational waves.
The result of the wisdom and efforts of several generations of Chinese scientists, Insight is expected to push forward the development of space astronomy and improve space X-ray detection technology in China.
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Hard X-ray Modulation Telescope launch, 15 June 2017
https://www.youtube.com/watch?v=YMaRoo0GcFk
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HXMT is nammed '慧眼' - Huiyan (Eye).
Huìyǎn translates as "insight"
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Other launch videos:
http://tv.cctv.com/2017/06/15/VIDEK1jg860W4fzO59KQy7sh170615.shtml
http://tv.cctv.com/2017/06/15/VIDEFH0g3iMDRaqu28H875B6170615.shtml
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Zhuhai-1(01) 50 кg; Zhuhai-1(02) 80-100 kg
AFAIK, both Zhuhai-1(01) and Zhuhai-1(02) are of the 50 kg OVS-1 type
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'Orbita' is Portuguese (Órbita) translates to 'Orbit'.
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China launches X-ray space telescope to scan Galactic plane for black holes, neutron stars (http://gbtimes.com/china/china-launches-x-ray-space-telescope-scan-galactic-plane-black-holes-neutron-stars).
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China launches space telescope to search for black holes, pulsars (http://news.xinhuanet.com/english/2017-06/15/c_136367874.htm).
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From Xinhua,
China Focus: China launches space telescope to search for black holes, pulsars (http://news.xinhuanet.com/english/2017-06/15/c_136368037.htm).
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From Xinhua,
China launches remote-sensing micro-nano satellites (http://news.xinhuanet.com/english/2017-06/15/c_136368683.htm).
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2017-034A 42758 TBA OBJECT A 95.47min 43.02° 546km 537km
2017-034B 42759 TBA OBJECT B 95.43min 43.02° 545km 534km
2017-034C 42760 TBA OBJECT C 95.45min 43.01° 545km 536km
2017-034D 42761 TBA OBJECT D 95.43min 43.02° 545km 534km
2017-034E 42762 ROCKET BODY 92.66min 43.12° 542km 268km
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CAMSAT CAS-4A & 4B Linear Transponder Payloads Launched
Posted on June 15, 2017 by N8HM
CAMSAT has announced the launch of its CAS-4A and CAS-4B linear transponder payloads. These payloads piggyback on the OVS-1A and OVS-1B optical remote sensing satellites, which were launched along with the hard X-ray modulation telescope (HXMT) satellite aboard a CZ-4B rocket from Jiuquan Satellite Launch Center at 03:00 UTC on June 15, 2017. Both satellites are in a 43 degree inclination orbit with an apogee of 524 km.
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Scientists voice expectations of China's new space telescope (http://news.xinhuanet.com/english/2017-06/16/c_136371060.htm).
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03:00
Is there an exact launch time?
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So our run of hi-res launch pics has come to an end? :(
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Scientific results:
Insight-HXMT observations of the first binary neutron star merger GW170817
http://engine.scichina.com/publisher/scp/journal/SCPMA/61/3/10.1007/s11433-017-9107-5?slug=full%20text
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China's first X-ray space telescope put into service after in-orbit tests (http://www.xinhuanet.com/english/2018-01/30/c_136936640.htm).