Author Topic: FAILURE: Proton-M launch with Telkom-3 and Ekspress-MD2 - August 6, 2012  (Read 71529 times)

Online Galactic Penguin SST

Do we have the serial numbers for the rocket and the culprit itself?
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Offline spectre9

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Horrible news  :(

I hope these upper stages get more reliable very soon.

Offline Artyom.

Horrible news  :'( :'( :'( ...
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Offline Prober

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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.



think the Britz is going to be an 'upgrade" to the Zenit
 
 
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Offline Skyrocket

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Do we have the serial numbers for the rocket and the culprit itself?

The Briz-M stage was #99531

Online Nicolas PILLET

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The Briz-M stage was #99531

Are you sure ? I have 99531 for the SES-5's Briz-M...
Nicolas PILLET
Kosmonavtika : The French site on Russian Space

Online Nicolas PILLET

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

No Briz-M on Fobos-Grunt. Absolutely no relation between the two failures.
Nicolas PILLET
Kosmonavtika : The French site on Russian Space

Offline FinalFrontier

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Another briz M failure.

How sad.
« Last Edit: 08/07/2012 06:47 AM by FinalFrontier »
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Offline Artyom.

Roscosmos video of the launch:

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Offline woods170

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Okay, so this is the fifth Briz-M failure in 62 Briz-M launches? Eight percent failure rate.

Offline Skyrocket

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The Briz-M stage was #99531

Are you sure ? I have 99531 for the SES-5's Briz-M...

Not quite - my info is several month old and i can not rule out, that the vehicle/payload allocations have since been changed.

Offline xm11

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Offline input~2

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So from http://www.ria.ru/science/20120807/718040335.html the first and second Briz-M burns were nominal (as confirmed from TM data) while the third burn did not occur and the stack is orbiting in the intermediate orbit 268 x 5000km x 49.9

Offline input~2

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USSTRATCOM has catalogued Object A (the stack) in
266.9 x 5012.2km x 49.91
(Object 2012-044A/ 38744 at epoch 0208UTC August 7)

Offline Ben the Space Brit

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So from http://www.ria.ru/science/20120807/718040335.html the first and second Briz-M burns were nominal (as confirmed from TM data) while the third burn did not occur and the stack is orbiting in the intermediate orbit 268 x 5000km x 49.9

Is there the provision to try to command the burn again (perhaps on a ground override command)?
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Offline input~2

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The first elset at epoch 2309UTC on August 6 gives roughly the same result for 2012-044A (the stack):
266.5 x 5013.9km x 49.92

2309UTC: would have been 9 minutes into Briz-M 3rd burn for a nominal sequence.... :(
« Last Edit: 08/07/2012 10:07 AM by input~2 »

Offline xm11

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the motor of satellite can be up to 36000km ?
or it still low orbit ?

Online Galactic Penguin SST

Satellite observer Kevin Fetter saw four objects related to this launch flying in series at around 04:08 UTC, so it looks like the Breeze-M separated its APT and the two satellites after the engine failed.

http://www.satobs.org/seesat/Aug-2012/0061.html

http://www.youtube.com/watch?v=eJ9B6JQFOrA&feature=youtu.be
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Offline input~2

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So from http://www.ria.ru/science/20120807/718040335.html the first and second Briz-M burns were nominal (as confirmed from TM data) while the third burn did not occur and the stack is orbiting in the intermediate orbit 268 x 5000km x 49.9
Roscosmos and Khrunichev press release mentions a Briz-M 7s 3rd burn (instead of nominal 1085s)
So the issue is a premature shutdown of the Briz engine not a failed re-ignition.

Offline input~2

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Satellite observer Kevin Fetter saw four objects related to this launch flying in series at around 04:08 UTC, so it looks like the Breeze-M separated its APT and the two satellites after the engine failed.

http://www.satobs.org/seesat/Aug-2012/0061.html

http://www.youtube.com/watch?v=eJ9B6JQFOrA&feature=youtu.be
Since there is no obvious sign of an orbit change due to separation for Object-A's 8 tles released so far, it's possible that Object A corresponds to the APT (which in the past has often been catalogued first).

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