Author Topic: Chuang Xin-3, Shiyan-7 and Shijian-15; Long March 4C; TSLC - July 19, 2013  (Read 24069 times)

Online Galactic Penguin SST

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First TLE for one of the objects from the launch has been released - orbit is 661*673 km * 98.06°.
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Offline jcm

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Now 4 objects

39208   37A  660 x 673 km x 98.06
39209   37B  666 x 673 km x 98.06
39210   37C  664 x 673 km x 98.06
39211   37D  478 x 671 km x 98.10

Orbit is sun-synch with 0642 local time descending ode.
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Offline jcm

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http://news.xinhuanet.com/english/china/2013-07/20/c_132557420.htm
for the English version of the story.

So what happened to Chuangxin-2, Shiyan-5 and 6, and SJ-13/14?

"A Long March-4C carrier rocket carring three satellites for scientific experiments blasts off from the launch pad in the Taiyuan Satellite Launch Center in Taiyuan, capital of north China's Shanxi Province, July 20, 2013. China successfully launched three satellites for scientific experiments, namely the Chuangxin-3, Shiyan-7 and Shijian-15, into space at 7:37 a.m. Saturday. The three satellites will be used mainly for conducting scientific experiments on space maintenance technologies"
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Offline beidou

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Satori, please merge this thread with the other one. Thanks!

Online Galactic Penguin SST

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A short news report on the launch: http://tv.cntv.cn/video/C10616/309f9285620f4fdba3c7e82edf964e7b

Exact launch time 23:37:55.685 UTC.

http://news.xinhuanet.com/english/china/2013-07/20/c_132557420.htm
for the English version of the story.

So what happened to Chuangxin-2, Shiyan-5 and 6, and SJ-13/14?

"A Long March-4C carrier rocket carring three satellites for scientific experiments blasts off from the launch pad in the Taiyuan Satellite Launch Center in Taiyuan, capital of north China's Shanxi Province, July 20, 2013. China successfully launched three satellites for scientific experiments, namely the Chuangxin-3, Shiyan-7 and Shijian-15, into space at 7:37 a.m. Saturday. The three satellites will be used mainly for conducting scientific experiments on space maintenance technologies"


I suppose they are still under development...  ::)
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Rui's article!
http://www.nasaspaceflight.com/2013/07/china-secretly-long-march-4c-three-sats/

It was also the fifth successful orbital Chinese launch in 2012.

May be in 2013  ::) ?
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Offline Lewis007

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A few additional launch pix can be found here:
http://www.chinanews.com/tp/hd2011/2013/07-20/226329.shtml
« Last Edit: 07/20/2013 08:18 AM by Lewis007 »

Offline beidou

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Rui's article!
http://www.nasaspaceflight.com/2013/07/china-secretly-long-march-4c-three-sats/

This launch was from TSLC (Taiyuan Satellite Launch Center), why were there so many paragraphs about JSLC (Jiuquan Satellite Launch Center), like shown below ???

"The Jiuquan Satellite Launch Center, in Ejin-Banner – a county in Alashan League of the Inner Mongolia Autonomous Region – was the first Chinese satellite launch center and is also known as the Shuang Cheng Tze launch center.

The site includes a Technical Centre, two Launch Complexes, Mission Command and Control Centre, Launch Control Centre, propellant fuelling systems, tracking and communication systems, gas supply systems, weather forecast systems, and logistic support systems.

Jiuquan was originally used to launch scientific and recoverable satellites into medium or low earth orbits at high inclinations. It is also the place from where all the Chinese manned missions are launched.

Presently, only the LC-43 launch complex, also known by South Launch Site (SLS) is in use. This launch complex is equipped with two launch pads: 921 and 603. Launch pad 921 is used for the manned program for the launch of the Chang Zheng-2F launch vehicle (Shenzhou and Tiangong). The 603 launch pad is used for unmanned orbital launches by the Chang Zheng-2C, Chang Zheng-2D and Chang Zheng-2C launch vehicles.

The first orbital launch took place on April 24, 1970 when the CZ-1 Chang Zheng-1 (CZ1-1) rocket launched the first Chinese satellite, the Dongfanghong-1 (04382 1970-034A).

"

Offline Satori

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Rui's article!
http://www.nasaspaceflight.com/2013/07/china-secretly-long-march-4c-three-sats/

This launch was from TSLC (Taiyuan Satellite Launch Center), why were there so many paragraphs about JSLC (Jiuquan Satellite Launch Center), like shown below ???


Thanks for the note. It will be corrected soon.

Offline jcm

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A fifth object has been cataloged - probably an adapter like the Ariane Sylda, I guess, separating the vertically stacked satellites
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Online Galactic Penguin SST

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Looks like one of the three (SJ-15?) is the long awaited "Chinese robotic arm test satellite" that has been planned for some time (maybe they are trying to put one on TG-2?), while another (SY-7?) will look for orbital debris (and maybe NEOs?).

I guess CX-3 is built by the Chinese Academy of Sciences again....

Apparently SJ-15 is built by SAST - so I think the identity of SJ-15 and SY-7 should be swapped over: SJ-15 being the orbital thingy tracker and SY-7 the robotic arm satellite (which made sense since there was a proposal by the Harbin Institute of Technology, which built all of the previous SY series of satellites, of such a satellite in 2009). CX-3 may be the target satellite of SY-7. (not a surprise either - the companion satellite released during Shenzhou 7 was based on CX-1)
« Last Edit: 07/20/2013 02:30 PM by Galactic Penguin SST »
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Offline Lewis007

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Has anyone seen a launch video on CCTV?
Thanks !

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Offline jcm

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Nice report! I don't see a "Y" serial number anywhere on the rocket or console displays, but you can sort of make out a list of flight events, I think the numbers in seconds from launch are (with my guesses at what the events might be:)

 0    Launch
156   (Stage 1 shutdown?)
210   
213?  (things like Stage 2 ignition, but I thought that would be more like T+156-160)
214?  (fairing separation??)
622?  (stage 3 burn?)
1172?  )
1252?  )  satellite separation events?
1349?  )

Can someone improve this?
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Offline input~2

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Another video at
http://military.cntv.cn/2013/07/20/VIDE1374320646266670.shtml

Exact launch time: 23:37:55.685 UTC
and a mission profile extracted from the video


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