Author Topic: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011  (Read 426755 times)

Offline anik

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #80 on: 08/13/2011 02:36 PM »
According to http://www.vesti.ru/doc.html?id=536316, the launch is planned on November 5, 2011.

Offline Nicolas PILLET

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #81 on: 08/15/2011 06:49 PM »
« Last Edit: 08/16/2011 03:25 AM by Ronsmytheiii »
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Offline anik

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #82 on: 09/22/2011 05:26 PM »
Photos were made on September 22nd.

Offline Moe Grills

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #83 on: 09/22/2011 07:48 PM »
  Now let me get this straight!
Have they done the vacuum-chamber test on the Phobos-Grunt bus
BEFORE they applied the gold foil, or will the vacuum-chamber test for the Phobos-Grunt bus happen AFTER it is applied ?

Offline Cbased

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #84 on: 09/23/2011 01:37 PM »
Have they done the vacuum-chamber test on the Phobos-Grunt bus
BEFORE they applied the gold foil, or will the vacuum-chamber test for the Phobos-Grunt bus happen AFTER it is applied ?

Gold foil was applied before.
http://rutube.ru/tracks/4560346.html?v=34f46a40f5fafeb05c12f1bba8d17916

Offline Cbased

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #85 on: 09/24/2011 12:59 PM »
According to RIA Novosti Phobos-Grunt will be shipped to Baikonur on the 29th of September.

http://ria.ru/science/20110922/441831975.html

Current planned launch date is 5th of November but the window is opened till 20th of November.

The cost of the project is 5 billion roubles.

Offline TheFallen

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #86 on: 09/25/2011 05:53 AM »
  Now let me get this straight!
Have they done the vacuum-chamber test on the Phobos-Grunt bus
BEFORE they applied the gold foil, or will the vacuum-chamber test for the Phobos-Grunt bus happen AFTER it is applied ?


Does it matter? I'm not getting my hopes up that this mission will have a different outcome than Mars '96. And Phobos 1. And Phobos 2. Etc...

Prove me wrong :)
« Last Edit: 09/25/2011 05:54 AM by TheFallen »

Offline Danderman

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #87 on: 09/25/2011 05:57 AM »
Phobos 2, IIRC, provided a lot of data about Mars and Phobos.

But I am not optimistic that the return capsule is going to be 100% successful, it seems like a long shot, like Hayabusa.

Offline Moe Grills

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #88 on: 09/26/2011 03:29 AM »
Phobos 2, IIRC, provided a lot of data about Mars and Phobos.

But I am not optimistic that the return capsule is going to be 100% successful, it seems like a long shot, like Hayabusa.


Hopefully the Russian unmanned spaceflight teams have well-learned
the hard lessons from Phobos 1, 2 & Mars 96.

BTW, the Russians do have good experience recovering unmanned capsules that have reentered Earth's atmosphere at over 11 km/sec,
starting with Luna 16 in September, 1970.

Offline Olaf

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #89 on: 09/27/2011 05:28 PM »
According to the NK forum the launch will be delayed to NET Nov, 8th or 9th. No reasons are mentioned. The launch window will be open until Nov, 25th.

Offline anik

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #90 on: 09/28/2011 12:52 PM »
According to Novosti kosmonavtiki forum, the launch is planned at 19:16 UTC on November 8th.

I have data that at 20:16 UTC on November 7th.
« Last Edit: 09/28/2011 01:34 PM by anik »

Offline anik

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #91 on: 10/04/2011 07:31 PM »
Fobos-Grunt spacecraft will be delivered to Baikonur cosmodrome on October 17th.

Offline hektor

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #92 on: 10/05/2011 08:55 AM »
Aviation Week talks about another 26-month delay.

http://www.aviationweek.com/aw/generic/story_channel.jsp?channel=space&id=news/awx/2011/10/03/awx_10_03_2011_p0-377356.xml&headline=NASA,%20ESA:%20No%20Agreement%20on%20Mars%20Mission

Quote
The mission has missed one planetary launch window already, and there are suggestions that continuing problems with the main Russian spacecraft may force another 26-month delay from the planned launch this fall.
« Last Edit: 10/05/2011 08:56 AM by hektor »

Offline JimO

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #93 on: 10/12/2011 02:36 PM »
Hopefully the Russian unmanned spaceflight teams have well-learned
the hard lessons from Phobos 1, 2 & Mars 96.

It is my understanding that the Russians still officially insist that Mars-96 fell safely into the deep Pacific. Have they recently repeated or defended that conclusion?

My assessment is that the object falling into the Pacific was the DM stage. a day after the probe itself -- and plutonium batteries -- was observed both from US assets and ground observers, fireballing across the northern Chile coast towards Bolivia.

But in fifteen years, no reports from the ground indicate any identification of probe-related debris.


Offline JimO

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #94 on: 10/12/2011 02:37 PM »
Has anybody seen any detailed ascent timeline, including trans-Mars insertion? Will that burn be done under telemetry observation, or 'in the blind', again?

Offline Nicolas PILLET

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #95 on: 10/14/2011 08:23 AM »
Intresting pictures of MDU and Zenit launcher. It is written "Zenit-2FG" on it...

http://www.roscosmos.ru/main.php?id=2&nid=18054
« Last Edit: 10/14/2011 08:23 AM by Nicolas PILLET »
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Kosmonavtika : The French site on Russian Space

Offline B. Hendrickx

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #96 on: 10/14/2011 09:19 PM »
Has anybody seen any detailed ascent timeline, including trans-Mars insertion? Will that burn be done under telemetry observation, or 'in the blind', again?

Some details are given in Lavochkin's in-house magazine "Vestnik NPO Lavochkina", nr. 3/2011, which can be downloaded here :

http://vestnik.laspace.ru/archives/

Check out the article "Ballistic flight profile of Fobos-Grunt" (in Russian).

The first two stages of the Zenit-2SLB will place Fobos-Grunt and the Briz-M upper stage into a 207x347 km parking orbit. Two and a half hours later the Briz main engine will be ignited for the first time, drawing propellant from the upper stage's jettisonable propellant tanks. This burn will place the vehicle into a 237x4250 km orbit (orbital period 2.1 hours) and will be followed by jettisoning of the tanks. Another 4.2 hours later the Briz-M will perform a second burn, after which the vehicle ends up in an orbit with an apogee of 17,500 km and an orbital period of 5.2 hours.

After reaching this new intermediate orbit, the Fobos-Grunt/Briz-M combination will coast in orbit for about 7 days, allowing its orbit to be accurately determined. On the basis of these orbit measurements,  the exact ignition time and duration of the escape burn will be calculated. In other words, while the two first burns will be executed automatically using data loaded aboard the spacecraft prior to launch, parameters for the escape burn will have to be uplinked to the spacecraft. If I'm not mistaken, it's the first time ever that a deep space probe spends a week coasting in Earth orbit before performing the escape burn. The article doesn't mention if the burn will be carried out within range of Russian ground stations.   

Offline GClark

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #97 on: 10/15/2011 05:41 AM »

The first two stages of the Zenit-2SLB will place Fobos-Grunt and the Briz-M upper stage...


Am I correct in thinking that this is a first for Zenit?  Briz-M?

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The first two stages of the Zenit-2SLB will place Fobos-Grunt and the Briz-M upper stage...


Am I correct in thinking that this is a first for Zenit?  Briz-M?


Briz-M? Wasn't it a Fregat stage?
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline anik

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Re: LIVE: Zenit-2SB launch with Phobos-Grunt - November 8, 2011
« Reply #99 on: 10/15/2011 08:17 AM »
Briz-M? Wasn't it a Fregat stage?

There is not Briz-M upper stage on Zenit-2SLB rocket for Fobos-Grunt launch, there is not upper stage there at all, there is a cruise propulsion engine Flagman based on Fregat upper stage.

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