Author Topic: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011  (Read 426696 times)

Offline plutogno

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #480 on: 11/09/2011 03:26 PM »
Mars-96 apparently intended to do the same -- did Phobos-1 and -2?

yes. only Phobos 2 did, of course

which reveals only a SINGLE ground site can perform the required comm.

this is crazy!

Online Nicolas PILLET

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #481 on: 11/09/2011 03:41 PM »
my next big concern is the operation of the Fregat stage

There is no Fregat stage. There is a MDU, which is derived from Fregat stage.  :)
Nicolas PILLET
Kosmonavtika : The French site on Russian Space

Offline BrunoQuiocca

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #482 on: 11/09/2011 03:43 PM »
How long is it taking to do a full lap around the earth?
According to this: http://digilander.libero.it/SATrack/Phobos.html?q=phobos&jd=2455874.35069566&Post=800#MAP the spacecraft just went over Argentina, and on the next 4 passes will be almost on the same spot as it was last night when i saw it. Actually a bit over west. As sunset is around 21:30 GMT here, it will be perfect for me to see it again.
Of course, if the russians don't fire up the rocket, cause it will start to fly over them in the same laps.
« Last Edit: 11/10/2011 09:25 AM by BrunoQuiocca »

Offline sdsds

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #483 on: 11/09/2011 03:59 PM »
How long is it taking to do a full lap around the earth?
According to this: http://digilander.libero.it/SATrack/Phobos.html?q=phobos&jd=2455874.35069566&Post=800#MAP the shuttle just went over Argentina, and on the next 4 passes will be almost on the same spot as it was last night when i saw it. Actually a bit over west. As sunset is around 21:30 GMT here, it will be perfect for me to see it again.
Of course, if the russians don't fire up the rocket, cause it will start to fly over them in the same laps.

If the shape of the orbit is 207 x 347 km then the period of the orbit would be almost exactly 90 minutes, I think.

-- sdsds --

Offline Vladi

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #484 on: 11/09/2011 04:08 PM »
Orbital period is 1h 29m 51s.

Ulan Ude might have got 8 minutes to contact the spacecraft, however it appears that we have to wait until a pass over Baikonur for better data.

Offline Nick

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #485 on: 11/09/2011 04:09 PM »
RIA Novosti is quoting Vladimir Popovkin as saying that there are two weeks to send the necessary commands to Phobos-Grunt and that it will remain in orbit for four weeks::

http://en.rian.ru/science/20111109/168547329.html


Offline BrunoQuiocca

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #486 on: 11/09/2011 04:11 PM »

If the shape of the orbit is 207 x 347 km then the period of the orbit would be almost exactly 90 minutes, I think.



Thanks.
So it should be over me around 22:45 GMT. Almost the same time as it was yesterday.
We will be looking up to the sky here.

Offline Nickolai

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #487 on: 11/09/2011 04:12 PM »
This was posted a couple pages ago, but to elaborate on the statement from Roscosmos: http://roscosmos.ru/main.php?id=2&nid=18227

The Google translate link is surprisingly good: http://translate.google.com/translate?sl=ru&tl=en&js=n&prev=_t&hl=en&ie=UTF-8&layout=2&eotf=1&u=http%3A%2F%2Froscosmos.ru%2Fmain.php%3Fid%3D2%26nid%3D18227

But to clarify a bit on the third paragraph: During the first planned engine burn an off-nominal situation occured - the engines were not fired. At the time of this planned burn the spacecraft was not in view of ground stations.
At the present time all parameters related to the motion/orbit of the spacecraft have been determined.

Key point: Adjusted analysis of the orbital parameters and energy supply on board showed that these commands must be issued within 2 weeks.

NOT 3 days, as initially reported. Remember, this is an official source.

We'll hopefully know more sometime around 3pm EST (23MSK) or at least shortly thereafter.

And can we please stop calling it a shuttle?

Offline cro-magnon gramps

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #488 on: 11/09/2011 04:15 PM »
this is part of a concise chronology of the crisis of the space craft

http://www.russianspaceweb.com/phobos_grunt_launch.html

At 16:35 Moscow Time (7:35 EST), a poster on Astronomy.ru web forum reported that new attempts to escape Earth orbit would be conducted between 03:00 and 05:00 Moscow Time on Thursday, November 10 (6 p.m. - 8 p.m. EST on Wednesday). According to Interfax news agency, Phobos-Grunt was expected to enter the range of Russian ground control stations at around 21:30 Moscow Time (12:30 p.m. EST), however only a ground station in Baikonur was equipped to downlink all necessary telemetry data and transmit new commands for the upcoming maneuver.
"Hate, it has caused a lot of problems in the world, but it has not solved one yet." Maya Angelou
 Tony Benn: "Hope is the fuel of progress and fear is the prison in which you put yourself."

Offline lucspace

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #489 on: 11/09/2011 04:25 PM »
The previous two posts indicate the two-week period to solve the problems is virtual; there are only three days... the click is ticking!

Offline Jason1701

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #490 on: 11/09/2011 04:27 PM »
This makes me wonder what this forum would have been like during Apollo 13.

Offline ugordan

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #491 on: 11/09/2011 04:27 PM »
The previous two posts indicate the two-week period to solve the problems is virtual; there are only three days... the click is ticking!

How do they indicate that?

Offline Svetoslav

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #492 on: 11/09/2011 04:31 PM »
Quote
And can we please stop calling it a shuttle?

People in USA/English speaking countries call it an unmanned probe or an unmanned spacecraft...

The true name in Russian - Автоматическая межпланетная станция can be translated into English as "Automatic Interplanetary Station"

Offline Chris Bergin

This makes me wonder what this forum would have been like during Apollo 13.

"OMG! Just heard 'Houston, we have a problem' over the loop! That doesn't sound good?!"

"Calm down, it could be anything."

"Uh oh, someone's just tweeted they are losing O2!"

And so on ;)

Offline JWag

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #494 on: 11/09/2011 04:33 PM »
The RussianSpaceWeb site says this:

Quote
in just two days [Phobos-Grunt] would descent too low for the available propellant to raise its parking orbit and conduct another attempt to enter escape trajectory toward Mars, reports said.

It's not clear to me what "reports" the author is referring to.
« Last Edit: 11/09/2011 04:35 PM by MondoMor »

Offline Jason1701

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #495 on: 11/09/2011 04:39 PM »
This makes me wonder what this forum would have been like during Apollo 13.

"OMG! Just heard 'Houston, we have a problem' over the loop! That doesn't sound good?!"

"Calm down, it could be anything."

"Uh oh, someone's just tweeted they are losing O2!"

And so on ;)

.. for three and a half straight days. And let's hope you wouldn't change the thread's title to "LOC: Apollo 13" during the period before splashdown!

Offline cro-magnon gramps

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #496 on: 11/09/2011 04:50 PM »
This makes me wonder what this forum would have been like during Apollo 13.

we slept in shifts, in the living room with the TV on; I can only say, it would have been 10 times the pages on this thread by now at least; would have been a zoo with the hundreds of people posting; I think the closest equivalent would have been Katrina, Christmas Tsunami or last springs Japan Earth Quake;

edit - it is quite probable that this website would have crashed in the first day along with many others as people tried to get news; I'm not sure the TV networks would have coped any better; interesting idea though, perhaps someone has a book in them on this ;-)
« Last Edit: 11/09/2011 05:07 PM by cro-magnon gramps »
"Hate, it has caused a lot of problems in the world, but it has not solved one yet." Maya Angelou
 Tony Benn: "Hope is the fuel of progress and fear is the prison in which you put yourself."

Offline Svetoslav

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #497 on: 11/09/2011 05:13 PM »
http://www.firstnews.ru/news/lenta/evropa-predlagaet-rf-pomoshch-v-podderzhanii-svyazi-s-fobos-gruntom/

Europe offers help to Russia. ESA says the deep space station of the agency can be activated so specialists would communicate with Phobos-Grunt all the time...

I wonder ... what is that station
 


Offline Jason1701

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #499 on: 11/09/2011 05:21 PM »
I wonder ... what is that station
 

"Station" as in "ground tracking station," not "orbital station."

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