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Old 11-09-2011, 04:31 AM   #91
Wishbone
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Biting nails... I wake up and I find telemetry lost, no burns and no explanation on what went wrong (apart from feeble attempts to blame the NIPs by Popovkin there are plenty of possibilities).
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Old 11-09-2011, 04:54 AM   #92
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Quote:
Originally Posted by SiberianTiger View Post
 There's information that ejection still can be commenced if the problems are fixed withing three days (maybe because after the the orbit will decay?)
I just read that the three day window is for the battery life the spacecraft has in its current configuration.

Very unfortunate news, I came to check on this mission with high hopes and was heart broken. I am very excited by the mission concept. I can only place my faith in the ground engineers...I doubt they will be sleeping much for the next three days.
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Old 11-09-2011, 05:03 AM   #93
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Quote:
1 37873U 11065B 11313.02318851 -.00003611 11416-4 00000+0 0 10
2 37873 051.4334 000.3953 0100243 017.8678 342.5852 16.02543395 04
Which is:
Inc = 51.433
RAAN = 0.395
e = 0.0100243
T = 1h 29m 51s (89.85 m)
MSemi = 6 646 km
PeA x ApA 201 x 334 km
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Old 11-09-2011, 05:09 AM   #94
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What is it with Mars and the Russians? They never mix well for some reason...
Oh well, better have a load of ready at ground control...
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Old 11-09-2011, 07:11 AM   #95
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I wake up and then this?! Come on Russia, you can fix it!
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Old 11-09-2011, 07:34 AM   #96
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It was said that the only telemetry transmission received (or known about) was obtained by a DSN stations who lent their working time to Roscosmos to support the mission. After that, the contract time ended. Ground stations in Russia were unable to acquire contact with the spacecraft.

The characteristics of the telemetry and control channel are such:

Quote:
Transmission - 7,159.72-7,176.28 MHz
Receiving - 8,412.268-8,431.1 MHz
Power - 20 kW
Bit Rate - 84 10^3 bit/s
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Old 11-09-2011, 07:42 AM   #97
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Official note on the project site:
http://phobos.cosmos.ru/index.php?id=285&L=2

Quote:
Dear Colleagues !

We need your support in the project "Phobos-Soil", because:
Two ignitions of Phobos-Grunt engine unit are planned to put spacecraft onto interplanetary mission to Mars. But unfortunately in both cases the operation of spacecraft engine is invisible from Russian ground stations. It is planned to record data about system work during engine operation on-board and when reaching the visibility area of ground stations in Russia to transmit these data to ground. But it is not so comfortable approach especially in case of some deviation from nominal scenario including failure. So there is the idea to observe the engine operation by optical instruments, i.e. telescopes, taking into account the position of spacecraft in eclipse part of the orbit during engine burn and brightness of engine plume ( engine propellant is nonsymmetrical Hydrazine and Nitrogen tetroxide, consumed with the rate of 6 kilos per second). Such approach with fast enough delivery of the results of observations may allow to confirm the very fact of the engine operation and to reach more reliable forecast of spacecraft position when the visibility area from Russian ground stations will be reached.

Many thanks for your cooperation!
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Old 11-09-2011, 07:45 AM   #98
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Quote:
Originally Posted by SiberianTiger View Post
 It was said that the only telemetry transmission received (or known about) was obtained by a DSN stations who lent their working time to Roscosmos to support the mission. After that, the contract time ended. Ground stations in Russia were unable to acquire contact with the spacecraft.

The characteristics of the telemetry and control channel are such:
And even the part that NASA's DSN has acquired signals from Phobos-Grunt might be incorrect.
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Old 11-09-2011, 07:47 AM   #99
SiberianTiger
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Don't know what does it mean, but an anonymous user writes:

Quote:
Solar arrays have deployed
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Old 11-09-2011, 07:52 AM   #100
SiberianTiger
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Emily Lakdawalla provides her insight into the present state:

http://www.planetary.org/blog/article/00003251/
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Old 11-09-2011, 08:17 AM   #101
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Hope, my dear friends.
It's not dead yet.
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Old 11-09-2011, 08:19 AM   #102
SiberianTiger
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Pass time predictions for the deep space communication station in Ussuriysk (Galenki):

Code:
Location      : Ussuriysk (131.7572 E, 44.0244 N)
Time zone     : UTC
Search period : 2011-11-09 08:12:09 - 3 days
                2011-11-12 08:12:09
Conditions    : Maximum sun elevation = None
                Minimum sat elevation = 1 deg
                Illumination NOT required

Time                Satellite              Azm  Elv  Mag Range S.Azm S.Elv
--------------------------------------------------------------------------
2011-11-09 14:13:22 #37872               207.0  1.0  ecl  1586 337.9 -61.3
2011-11-09 14:16:40 #37872               138.4 17.3  ecl   640 339.5 -61.5
2011-11-09 14:20:05 #37872                71.1  1.0  ecl  1656 341.2 -61.8

2011-11-09 15:46:37 #37872               259.7  1.0  ecl  1612  25.1 -60.9
2011-11-09 15:50:09 #37872               337.4 28.8  ecl   452  26.7 -60.6
2011-11-09 15:53:54 #37872                54.3  1.0  ecl  1715  28.5 -60.3

2011-11-09 17:20:58 #37872               295.0  1.0  ecl  1668  59.7 -49.3
2011-11-09 17:24:17 #37872               357.2 12.6  ecl   876  60.6 -48.8
2011-11-09 17:27:47 #37872                58.4  1.0  ecl  1777  61.6 -48.2

2011-11-09 18:54:51 #37872               306.8  1.0  ecl  1729  81.2 -33.5
2011-11-09 18:58:31 #37872                16.8 18.8  ecl   714  81.9 -32.8
2011-11-09 19:02:24 #37872                85.3  1.0    ?  1848  82.6 -32.1

2011-11-09 20:28:18 #37872               299.2  1.0  ecl  1780  97.6 -16.7
2011-11-09 20:32:20 #37872               211.4 68.0    ?   301  98.3 -16.0
2011-11-09 20:36:38 #37872               127.3  1.0    ?  1902  99.0 -15.2
We should wait for at least first of these periods. Even if it's in safe mode, the power supply has a chance of being Ok.
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Old 11-09-2011, 08:40 AM   #103
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For now, it's a...

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Old 11-09-2011, 09:43 AM   #104
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Quote:
Originally Posted by SiberianTiger View Post
 Official note on the project site:
http://phobos.cosmos.ru/index.php?id=285&L=2

Dear Colleagues !

We need your support in the project "Phobos-Soil", because:
Two ignitions of Phobos-Grunt engine unit are planned to put spacecraft onto interplanetary mission to Mars. But unfortunately in both cases the operation of spacecraft engine is invisible from Russian ground stations..............snip

Bad news!! Let's hope for the best.
Quoted text from SiberianTiger's link was already on that website one or two days before launch.

Last edited by Ripley; 11-09-2011 at 09:45 AM.
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Old 11-09-2011, 09:50 AM   #105
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Quote:
Originally Posted by Ripley View Post
 Bad news!! Let's hope for the best.
Quoted text from SiberianTiger's link was already on that website one or two days before launch.

Which makes it even stranger. One would have thought that ballistics and comms schedule would be worked out well in advance. Since all uplinked commands are blackboxed, we may soon learn if it was the uplink glitch that caused that.
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