NASASpaceFlight.com Forum
International Space Flight (ESA, Russia, China and others) => Chinese Launchers => Topic started by: Satori on 07/24/2015 06:46 pm
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China will launch the SJ-10 Shijian-10 scientific satellite on the first half of 2016.
From Xinhua, China to launch scientific satellite in 2016 (http://news.xinhuanet.com/english/photo/2015-07/24/c_134442016.htm).
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Here's an illustration of the SJ-10 satellite: (from http://english.nssc.cas.cn/missions/FM/)
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According to the Go Taikonauts! issue n.Ί 16, on 15 May, the first batch of flight models of payloads of the SJ-10 satellite were delivered for satellite integration. By the end of June, 28 of 29 payloads had been delivered.
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Is it clear to anyone whether these two "seeds satellites" (as they were originally called) are derived from the JB-2 or JB-4 remote sensing/photoreconnaissance satellites? The lifetime of Shijian 8 fit with neither of these satellite series.
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http://english.nssc.cas.cn/ns/NU/201410/W020141016603618747022.pdf
"Space experiments aboard Microgravity satellite SJ-10"
ABSTRACT
SJ-10 satellite will carry out the missions of space microgravity experiments in both
fields of physical science and life science on board the 24th recoverable satellite of
China. Scientific purpose of the program is to promote the scientific research in the
space microgravity environment by operation of recoverable satellite at low Earth
orbit for 2 weeks. There are 6 experiments of fluid physics, 3 of combustion and 8 of
materials science in the field of physical science, 3 experiments of radiation biology, 3
of gravitational biology and 4 of biotechnology in the field of life science. The
experiments were selected from more than 200 applications. The satellite will be
launched at the end of 2015 or later. Fruitful scientific results on microgravity science
and space life science are expected to be contributed by this program.
EDIT: let me highlight one.
B3-3 Development of mouse early embryos in space
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At the end of January the satellite had passed the pre-acceptance review
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SJ-10 delivered today.
(http://)
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Any news about this (e.g. a slightly more concrete launch date) given that ESA has quite a few experiments on board? ;)
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SJ-10 will be launched on April 6
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Mouse embryos in space, again.
The aims of the program are:
(i) to determine whether early mammalian embryo can develop in outer space or not; (ii) and if yes, to observe the development process during space flight by tele-transferring of the embryo photos from the satellite to the ground; (iii) to inves tigate the profiles of the early embryo development in space.
..
This investigation will be critical in understanding the beginning of mammalian life, as well as the first step in understanding the entire process of reproduction in space.
I like it
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It looks like the launch may happen on TODAY GMT (i.e. wee hours April 6 local time) based on reports on the Chinese forum, with the source being people involved with tracking SJ-10. ::)
No NOTAMs till now, which isn't a surprise given the target 43 degree inclination orbit. :-X
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ESA reports a 18:00 UTC launch time:
ESA Operations @esaoperations
Sending crude oil into space - launching tonight 18:00 UTC from Jiuquan space centre, #China
Here's their newest article on the crude oil experiment in co-operation with CNSA: http://www.esa.int/Our_Activities/Human_Spaceflight/Research/Sending_crude_oil_into_space_to_study_Earth_s_depths (http://www.esa.int/Our_Activities/Human_Spaceflight/Research/Sending_crude_oil_into_space_to_study_Earth_s_depths)
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No NOTAMs till now, which isn't a surprise given the target 43 degree inclination orbit.
Why do you expect no NOTAM for this orbit inclination?
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No NOTAMs till now, which isn't a surprise given the target 43 degree inclination orbit.
Why do you expect no NOTAM for this orbit inclination?
I wrote this when I thought it was going to a 63 degree inclination orbit. I only remember one such occasion where NOTAM was released. However other sources indicate a 43 degree target orbit. :-\
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lift-off should have already taken place!
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Well, it looks like the launch had already taken place at 17:38 UTC and the satellite's in orbit!
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Confirmation of launch success from Chinese military media (http://bbs.9ifly.cn/forum.php?mod=redirect&goto=findpost&ptid=754&pid=463945&fromuid=24484).
@军报记者
【实践十号返回式科学实验卫星发射圆满成功】2016年4月6日1时38分，我国在酒泉卫星发射中心用长征二号丁运载火箭，成功发射了首颗微重力科学实验卫星实践十号返回式科学实验卫星。此次运载火箭系统由中国航天科技集团所属上海航天技术研究院负责研制，这是长征系列运载火箭的第226次飞行。
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Rui's article!
https://www.nasaspaceflight.com/2016/04/long-march-2d-shijian-10/
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CZ-2D serial number is Y36.
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Massimo @Rainmaker1973 31m31 minutes ago
Chinas SJ-10 launches sending crude oil into space to study Earth's depth
[Short launch video at:]
https://twitter.com/i/videos/tweet/717456421001019392 (https://twitter.com/i/videos/tweet/717456421001019392)
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More pictures
http://news.xinhuanet.com/photo/2016-04/06/c_1118537271.htm
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China launches SJ-10 retrievable space science probe (http://news.xinhuanet.com/english/2016-04/06/c_135252986.htm).
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Some photos in hi-res can be seen below.
NORAD has found the satellite in a 234 x 268 km x 42.89° orbit. According to Chinese reports the landing site has changed from the original one in Sichuan to Inner Mongolia.
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https://www.youtube.com/watch?v=Uao4O4NCfKM
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Video with mission description (in Chinese)
http://tv.cctv.com/2016/04/06/VIDEVNp6GCFsk0Tfc8CQv4jQ160406.shtml
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Launch video:
http://tv.cctv.com/2016/04/06/VIDEF1slg9E7aQ2fO3m0kx2d160406.shtml
Exact launch time: 17:38:04.160
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Exact launch time was 17:38:04.160UTC.
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Robert Christy assumes that there was CZ-2D underperformance: https://twitter.com/Zarya_Info/status/717667744192311297
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Robert Christy assumes that there was CZ-2D underperformance: https://twitter.com/Zarya_Info/status/717667744192311297
...or maybe this one is heavier than the early FSWs. After all the orbit inclination and planned landing site were changed as well.
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...or maybe this one is heavier than the early FSWs. After all the orbit inclination and planned landing site were changed as well
The question which resolves this problem is: what was the planned SJ-10 orbit?
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JSpOC has cataloged 3 objects
2016-023A/41448 in 233 x 268 km x 42.89°
2016-023B/41449 in 234 x 268 km x 42.89°
2016-023C/41450 in 222 x 248 km x 42.87°
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Robert Christy assumes that there was CZ-2D underperformance: https://twitter.com/Zarya_Info/status/717667744192311297
...or maybe this one is heavier than the early FSWs. After all the orbit inclination and planned landing site were changed as well.
The FSW-2 and FSW-4 satellites, from which SJ 8 and 10 are derived, reportedly had masses of 3,600-3,800 kg.
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According to http://english.nssc.cas.cn/missions/FM/ , planned orbit was perigee altitude 220 km, the apogee altitude 482 km and orbital inclination 63°.
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According to http://english.nssc.cas.cn/missions/FM/ , planned orbit was perigee altitude 220 km, the apogee altitude 482 km and orbital inclination 63°
Galactic Penguin SST says that SJ-10 planned orbit was changed before launch.
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According to http://english.nssc.cas.cn/missions/FM/ , planned orbit was perigee altitude 220 km, the apogee altitude 482 km and orbital inclination 63°
Galactic Penguin SST says that SJ-10 planned orbit was changed before launch.
I wonder why. And how close to the launch the change took place.
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According to http://english.nssc.cas.cn/missions/FM/ , planned orbit was perigee altitude 220 km, the apogee altitude 482 km and orbital inclination 63°
Galactic Penguin SST says that SJ-10 planned orbit was changed before launch.
I wonder why. And how close to the launch the change took place.
Early this year, from what I understand. Landing is scheduled for around 1500 Beijing time on April 18th at Siziwang Banner, with the mission extended by 12 hours plus from original plan in order for a more convenient deorbiting.
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Early this year, from what I understand
Do you know what was SJ-10 changed planned orbit?
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Early this year, from what I understand
Do you know what was SJ-10 changed planned orbit?
What I was told is that it was simply logistical. Ease of access. I suppose if some of the experiments need to be processed as soon as, then being closer to relevant facilities in Beijing would help.
Perhaps it's also decent run-out for recovery teams ahead of Shenzhou-11?
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What I was told is that it was simply logistical. Ease of access. I suppose if some of the experiments need to be processed as soon as, then being closer to relevant facilities in Beijing would help
Thanks for info!
I am sorry, but I meant to ask this question: do you know parameters of the planned SJ-10 orbit that was changed this year?
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What I was told is that it was simply logistical. Ease of access. I suppose if some of the experiments need to be processed as soon as, then being closer to relevant facilities in Beijing would help
Thanks for info!
I am sorry, but I meant to ask this question: do you know parameters of the planned SJ-10 orbit that was changed this year?
Only info I saw was that which Satori quoted earlier:
According to http://english.nssc.cas.cn/missions/FM/ , planned orbit was perigee altitude 220 km, the apogee altitude 482 km and orbital inclination 63°.
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In order to evaluate Robert Christy's claim that the CZ-2D2 under-performed on this mission we need to know the target orbit at 42.9 deg. Without that we cannot estimate the magnitude of any under-performance (if any).
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Only info I saw was that which Satori quoted earlier:
According to http://english.nssc.cas.cn/missions/FM/ , planned orbit was perigee altitude 220 km, the apogee altitude 482 km and orbital inclination 63°.
Yes, but inclination has been changed from 63 to 43, so it is interesting whether they changed heights too.
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Apologies for answering questions not asked earlier. Did some digging which reveals an article from October 2015 (thus earlier than I'd been told) noting the change in orbit from 65° to 43° and landing at Siziwang Banner, not Sichuan, for 'better recovery conditions'. No mention of planned altitude.
However, it notes that SJ-10 is new generation of recoverable sat, with "use of small attitude control engine as the propulsion system thrusters", improvements to TT&C, and roughly doubling the number of payloads, etc:
曾担任过多颗返回式卫星总设计师的中国航天科技集团第五研究院研究员、实践十号工程总师唐伯昶介绍，作为我国新一代返回式卫星，实践十号实现了四大技术飞跃：一是姿态控制采用小发动机作为推进系统的推力器，俗称热气，而过去是高压气瓶氮气作为推力工质，俗称冷气；二是以与国际接轨的数据管理系统替代原先的程序控制器，使得遥控指令和遥测数据的安排以及改变飞行程序的数据注入都更加灵活；三是增设流体回路的热控分系统，使卫星回收舱内部的热能有效排到星外，以确保生物样品的温度环境；四是改进轨道设计，将卫星回收区改至内蒙古四子王旗，卫星轨道倾角由65°改为43°，使回收落区有更好的搜寻回收条件，使回收落点精度满足快速回收的要求。
Google translate:
"the practice of the 10th" project chief engineer Tangbo Chang describes as China's new generation recoverable satellite, "the practice of the 10th" to achieve the four technological leap: First, the use of small attitude control engine as the propulsion system thrusters, commonly known as "hot air", and the past is the high-pressure nitrogen gas cylinder as the thrust of the working fluid, commonly known as "air-conditioning"; second is with the international data management system to replace the original program controller, making arrangements for remote command and telemetry data, and change flight data injection procedures are more flexible; third is additional fluid circuit of thermal control subsystems, making satellite recovery compartment inside heat efficiently discharged outside the star to make sure the temperature environment of biological samples; fourth is to improve the design orbit, the satellite will be relocated to Siziwangqi recovery area, satellite orbital inclination by the 65 ° to 43 °, the recovered off the search area better recovery conditions, the recovered placement accuracy meet the rapid recovery requirements.
"In the past recoverable satellite carrying a maximum payload eighty-nine, the 'practice on the 10th' has doubled in size, equipped with a total of 19 payloads." Tangbo Chang told the "Science News."
http://www.science-weekly.cn/skhtmlnews/2015/10/3032.html
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4 objects now in JSpOC catalog with ID given respectively as
A) SJ-10
B CZ-2D R/B (2nd stage)
C) CZ-2D debris (separation motor cover?)
D) CZ-2D debris (separation motor cover?)
From latest TLEs available:
2016-023A/41448 in 232 x 268 km x 42.89°
2016-023B/ 41449 in 232 x 262 km x 42.89°
2016-023C/41450 in 165 x 172 km x 42.86°
2016-023D/41451 in 208 x 227 km x 42.90°
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There's been an increase in altitude and orbital period:
https://twitter.com/Zarya_Info/status/719077671150428160
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I have not seen it mentioned in the thread (apologies if it was): how does SJ-10 reenters? a retrograde rocket burn or a brute force radial burn taking it out of orbit like the FSW recoverable satellites?
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Reentry of the capsule expected on April 18 from 08:05 to 08:31 UTC in Inner Mongolia
A0784/16 - A TEMPORARY RESTRICTED AREA ESTABLISHED BOUNDED BY: N414725E1122551-N424802E1121540-N422847E1100017-N412810E1101040 BACK TO START. VERTICAL LIMITS:GND-UNL. GND - UNL, 18 APR 08:05 2016 UNTIL 18 APR 08:31 2016. CREATED: 15 APR 09:55 2016
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rehearsing the recovery of SJ-10
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The return capsule should be down by now, but no confirmation of that yet. At least the news reports today do mention search teams are now ready to retrieve it...
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Xinhua News just confirmed that the capsule has landed at 08:30 UTC.
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Xinhua News just confirmed that the capsule has landed at 08:30 UTC.
That time looks as if it might be rounded. Or maybe I am too much of a suspicious "Cold War warrior"!!
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Recovery scene
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Xinhua News just confirmed that the capsule has landed at 08:30 UTC.
That time looks as if it might be rounded. Or maybe I am too much of a suspicious "Cold War warrior"!!
The news reports also give the following times:
08:15 UTC - separation of the capsule from the orbital module (which will continue to function for at least 3 days for some fluid physics experiments on board)
08:19 UTC - detection of the capsule from the ground
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Xinhua News just confirmed that the capsule has landed at 08:30 UTC.
That time looks as if it might be rounded. Or maybe I am too much of a suspicious "Cold War warrior"!!
The news reports also give the following times:
08:15 UTC - separation of the capsule from the orbital module (which will continue to function for at least 3 days for some fluid physics experiments on board)
08:19 UTC - detection of the capsule from the ground
Will the orbital module be deliberately de-orbited or allowed to decay naturally?
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Historically, the instrument module left in orbit is allowed to decay naturally.
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Good work guys! I've updated Rui's article, per mission completion.
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A few more post-recovery pics
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Historically, the instrument module left in orbit is allowed to decay naturally.
Thank you. Is that estimated to take long in the current orbit?
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Re-entry capsule of SJ-10 lands in N. China (http://news.xinhuanet.com/english/2016-04/18/c_135290254.htm).
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Mammal embryos successfully develop in space (http://news.xinhuanet.com/english/2016-04/17/c_135286897.htm).
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Mammal embryos successfully develop in space (http://news.xinhuanet.com/english/2016-04/17/c_135286897.htm).
That's pretty awesome. One small step
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The attached image - from www.news.cn - shows the return capsule from the Shijian-10 mission.
The capsule appears to be wrapped in a dark coloured (matt black ? ) fabric covering .
Anyone know what that fabric is or wish to comment on this covering as it appears to have withstood entry into atmosphere very, very well ?
A-P
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Looking again more closely at image it may not be fabric but "scorch marks " on the top of the capsule !
Still interested though if anyonekns material being used.
A-P
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A cropped closeup of return capsule of Shijian-10 spacecraft showing the forward end
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Very interesting. After the descent module was recovered the equipment module was tracked in a 253-269 km orbit. Then on April 22 the module manoeuvred from 252-267 km to 254-308 km. Clearly this is still operating and presumably doing some useful work.
This happened on a couple of the FSW reconnaissance/remote sensing satellites which use the same bus as Shijian 10.
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papers on SJ-10 experiments:
Ground Experimental Study of the Colloidal Material Box aboard SJ-10 Satellite
http://www.cjss.ac.cn/EN/abstract/abstract2248.shtml
Experimental Facility for Ignition and Burning of Solid Materials aboard SJ-10 Satellite
http://www.cjss.ac.cn/EN/abstract/abstract2254.shtml
Analyses on Ground-based Results of Evaporation-convection Box Experiment Prepared for SJ-10 Satellite
http://www.cjss.ac.cn/EN/abstract/abstract2257.shtml