Author Topic: FAILURE: Proton-M launch with Telkom-3 and Ekspress-MD2 - August 6, 2012  (Read 73542 times)

Offline input~2

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Briz-M 2nd burn shutdown


Offline Mapperuo

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Roscosmos talking about a failure on the Briz-M?

Google translation says:

Quote
August 7 during the breeding parent block (RB, "the Briz-M" spacecraft and 2) was not detected in the transfer orbit. The signal from the headunit (GB) was adopted with an emergency intermediate orbit.
     According to preliminary information, the inclusion of cruise propulsion system (PS), RB, "the Briz-M" was the estimated time. Shutdown control occurred in 7 seconds instead of the estimated 18 minutes 5 seconds.
     GB means accompanied Troops Air and Space Defense and Space Agency.
     Conducted an analysis of the situation.

http://www.roscosmos.ru/main.php?id=2&nid=19396
« Last Edit: 08/07/2012 02:19 AM by Mapperuo »
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Offline Targeteer

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Roscosmos talking about a failure on the Briz-M?
Google translation says:

Quote
August 7 during the breeding parent block (RB, "the Briz-M" spacecraft and 2) was not detected in the transfer orbit. The signal from the headunit (GB) was adopted with an emergency intermediate orbit.
     According to preliminary information, the inclusion of cruise propulsion system (PS), RB, "the Briz-M" was the estimated time. Shutdown control occurred in 7 seconds instead of the estimated 18 minutes 5 seconds.
     GB means accompanied Troops Air and Space Defense and Space Agency.
     Conducted an analysis of the situation.

http://www.roscosmos.ru/main.php?id=2&nid=19396

However Google Russian translations aren't the most reliable


shaky translation or not a 7 second burn doesn't sound good...
« Last Edit: 08/07/2012 02:20 AM by Targeteer »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

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It's 6:20am in Moscow, so all our Russian friends are probably still in bed. Any Russian speakers around for an accurate translation of the Roscosmos link?

Offline Mapperuo

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shaky translation or not a 7 second burn doesn't sound good...

I would agree yes.
« Last Edit: 08/07/2012 02:22 AM by Mapperuo »
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Offline Ronsmytheiii

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Roscosmos talking about a failure on the Briz-M?

Phobos-Grunt (zenit but with Briz-M) and now this, Briz-M isnt having too much luck lately.
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Offline Danderman

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If this is the case, that's the end of Khrunichev in their current form.

And maybe they go back to using Block-DM.

Offline nathan.moeller

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Forgive me for not being up to speed (no pun intended) on the Briz-M performance design, but does this strand the satellites in an improper orbit or are they coming back down?
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Forgive me for not being up to speed (no pun intended) on the Briz-M performance design, but does this strand the satellites in an improper orbit or are they coming back down?

They are stranded in a roughly ~250 x 5000 km x 50 degrees inclination orbit, so the whole stack could be coming down within the next few weeks.
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Offline jcm

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My translation,

7 Aug during insertion of the payload module (Briz-KM stage and
two satellites) it was not delivered to the transfer orbit.
A signal from the payload module was received from an
erroneous intermediate orbit.
 According to preliminary information, the  ignition of the Briz-M main
engine was carried out at the planned time. Shutdown of the engine
occurred after 7s instead of the planned 18m 5s.  Analysis of the
situation [is to be carried out?]




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Offline jcm

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Thanks Jonathan!
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Offline Ronsmytheiii

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My translation,

7 Aug during insertion of the payload module (Briz-KM stage and
two satellites) it was not delivered to the transfer orbit.
A signal from the payload module was received from an
erroneous intermediate orbit.
 According to preliminary information, the  ignition of the Briz-M main
engine was carried out at the planned time. Shutdown of the engine
occurred after 7s instead of the planned 18m 5s.  Analysis of the
situation [is to be carried out?]






So, assuming that Briz-M is 100% chance being dead, could the LCC order s/c sep any how?
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Offline nathan.moeller

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Forgive me for not being up to speed (no pun intended) on the Briz-M performance design, but does this strand the satellites in an improper orbit or are they coming back down?

They are stranded in a roughly ~250 x 5000 km x 50 degrees inclination orbit, so the whole stack could be coming down within the next few weeks.

Thanks.  Very sad day for Russia but at least they won't pose a debris risk for long.
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Offline GClark

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Roscosmos talking about a failure on the Briz-M?

Phobos-Grunt (zenit but with Briz-M) and now this, Briz-M isnt having too much luck lately.

Fobos-Grunt used a modified Fregat, not Briz.  To the best of my (admittedly incomplete) knowledge Briz has never been used on Zenit, nor are there any plans to do so.

That said, Proton-Briz had 12 successes since the last failure (Express-AM4).

Offline ChileVerde

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My translation,
 Analysis of the situation [is to be carried out?]

That's right.

Ведётся анализ сложившейся ситуации. 

More literally, "An analysis of the situation that has developed will be carried out."  But I'm not, in general, a big fan of literal translations.
"I canít tell you which asteroid, but there will be one in 2025," Bolden asserted.

Offline jcm

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Commiserations to our Russian colleagues - this is too bad.

Re the debris risk - low perigee but intermediate apogee, so debris could be around for a few years and passing through ISS and HST altitude regimes....  not as bad as the Arabsat/Briz debris cloud in GTO but not great.

On the plus side, the low orbit means the debris will be trackable so we'll know the scope of the problem if any.
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