Author Topic: Yaogan-30-group 03 - CZ-2C - XSLC - December 25, 2017 (19:44 UTC)  (Read 11368 times)

Offline russianhalo117

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it is quite possible that they work together but all we know from the State media and the forums in China is that YG-30 operates with the YG-30 Groups and that we may see additional launches for this Constellation in 2018 to further expand coverage in this multi inclination constellation.
I doubt it very much because orbital heights are different and hence there is no synchronization in movements of YG-24/GF-9/YG-30 optical birds with the three triplets which are not optical per official statements.
Yet I'm open to a possibility of three additional launches to bring the constellation to six planes x three satellites.

I'm also skeptical, does someone have a link to the original claim? Seems like it could be a confusion with a statement that the YG-30 Groups would work with each other (as opposed to with the original YG-30)
original: https://forum.nasaspaceflight.com/index.php?topic=42724.msg1731226#msg1731226

Offline jcm

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it is quite possible that they work together but all we know from the State media and the forums in China is that YG-30 operates with the YG-30 Groups and that we may see additional launches for this Constellation in 2018 to further expand coverage in this multi inclination constellation.
I doubt it very much because orbital heights are different and hence there is no synchronization in movements of YG-24/GF-9/YG-30 optical birds with the three triplets which are not optical per official statements.
Yet I'm open to a possibility of three additional launches to bring the constellation to six planes x three satellites.

I'm also skeptical, does someone have a link to the original claim? Seems like it could be a confusion with a statement that the YG-30 Groups would work with each other (as opposed to with the original YG-30)
original: https://forum.nasaspaceflight.com/index.php?topic=42724.msg1731226#msg1731226

The "original" is a Hong Kong newspaper's English language restatement citing a Xinhua statement. It's hard to evaluate without seeing the original Xinhua release their claim is based on, preferably in its Chinese version.
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Offline input~2

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it is quite possible that they work together but all we know from the State media and the forums in China is that YG-30 operates with the YG-30 Groups and that we may see additional launches for this Constellation in 2018 to further expand coverage in this multi inclination constellation.
I doubt it very much because orbital heights are different and hence there is no synchronization in movements of YG-24/GF-9/YG-30 optical birds with the three triplets which are not optical per official statements.
Yet I'm open to a possibility of three additional launches to bring the constellation to six planes x three satellites.

I'm also skeptical, does someone have a link to the original claim? Seems like it could be a confusion with a statement that the YG-30 Groups would work with each other (as opposed to with the original YG-30)
original: https://forum.nasaspaceflight.com/index.php?topic=42724.msg1731226#msg1731226

The "original" is a Hong Kong newspaper's English language restatement citing a Xinhua statement. It's hard to evaluate without seeing the original Xinhua release their claim is based on, preferably in its Chinese version.
Was it an extrapolation of the 2nd paragraph of the original Xinhua press release (http://news.xinhuanet.com/politics/2017-09/29/c_1121745112.htm ) which prompted the SCMP author to talk about a "constellation" involving the earlier YG-30?

Offline input~2

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Other ideas on YG-30-Groups mission (in French)
http://www.eastpendulum.com/la-mysterieuse-constellation-yaogan-30

Offline jcm

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it is quite possible that they work together but all we know from the State media and the forums in China is that YG-30 operates with the YG-30 Groups and that we may see additional launches for this Constellation in 2018 to further expand coverage in this multi inclination constellation.
I doubt it very much because orbital heights are different and hence there is no synchronization in movements of YG-24/GF-9/YG-30 optical birds with the three triplets which are not optical per official statements.
Yet I'm open to a possibility of three additional launches to bring the constellation to six planes x three satellites.

I'm also skeptical, does someone have a link to the original claim? Seems like it could be a confusion with a statement that the YG-30 Groups would work with each other (as opposed to with the original YG-30)
original: https://forum.nasaspaceflight.com/index.php?topic=42724.msg1731226#msg1731226

The "original" is a Hong Kong newspaper's English language restatement citing a Xinhua statement. It's hard to evaluate without seeing the original Xinhua release their claim is based on, preferably in its Chinese version.
Was it an extrapolation of the 2nd paragraph of the original Xinhua press release (http://news.xinhuanet.com/politics/2017-09/29/c_1121745112.htm ) which prompted the SCMP author to talk about a "constellation" involving the earlier YG-30?

I bet that's it.  "Remote sensing satellite No. 30 uses multi-satellitet networking mode, mainly for electromagnetic environment detection and related technical tests. Since the satellite came into operation on August 21, Xichang Satellite Launch Center has conducted a comprehensive review on organization and management, command operation, facilities and equipment, test instruments and so on"

I interpret that as referring not to the original YG-30 but the YG-30 Group satellites, and the Aug 21 referring to
start of ground tests at Xichang. So I think the claim that there is an admitted link to the original YG-30 is very weak.
And indeed I still suspect that someone goofed and it should have been YG-31 Group 01 etc.
« Last Edit: 12/27/2017 02:27 AM by jcm »
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Offline Phillip Clark

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Following from Jonathan's comment, this is what I posted on September 29 in the thread for the first cluster in this constellation:

"Maybe the Chinese screwed up with the numbering system or mis-translated it into western numbers, and it should be Yaogan Weixing 31A, B and C?"
I've always been crazy but it's kept me from going insane - WJ.

Offline jcm

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Following from Jonathan's comment, this is what I posted on September 29 in the thread for the first cluster in this constellation:

"Maybe the Chinese screwed up with the numbering system or mis-translated it into western numbers, and it should be Yaogan Weixing 31A, B and C?"

As I'm sure you know, we are now sure it's not a mistranslation - it's definitely 30 and not 31 in the Chinese: 三十
But it could be a mistake that they were too embarrassed to correct! Or, they are deliberately trolling us.
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Offline Galactic Penguin SST

Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline input~2

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I bet that's it.  "Remote sensing satellite No. 30 uses multi-satellitet networking mode, mainly for electromagnetic environment detection and related technical tests. Since the satellite came into operation on August 21, Xichang Satellite Launch Center has conducted a comprehensive review on organization and management, command operation, facilities and equipment, test instruments and so on"

I interpret that as referring not to the original YG-30 but the YG-30 Group satellites, and the Aug 21 referring to
start of ground tests at Xichang. So I think the claim that there is an admitted link to the original YG-30 is very weak.
And indeed I still suspect that someone goofed and it should have been YG-31 Group 01 etc.
The sentence 自卫星8月21日进场以来 can be translated as "Since the arrival of the satellite on August 21,..' which fits all the more with your interpretation.

Offline input~2

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First stage debris were recovered near Longchang village (264621N1072751E) Guizhou province, at the edge of the NOTAMed area
source