Author Topic: LIVE: Proton-M/Briz-M launch with Eutelsat-3D - May 14, 2013  (Read 39620 times)

Offline Artyom.

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Re: LIVE: Proton-M/Briz-M launch with Eutelsat-3D - May 14, 2013
« Reply #100 on: 05/14/2013 05:33 pm »
Second Briz-M burn ended 23 seconds early  :o.

Quote
Выключение МД   5114   5091   -23
« Last Edit: 05/14/2013 05:36 pm by Artyom. »

Offline Artyom.

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Re: LIVE: Proton-M/Briz-M launch with Eutelsat-3D - May 14, 2013
« Reply #101 on: 05/14/2013 05:37 pm »

Offline Nickolai

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Re: LIVE: Proton-M/Briz-M launch with Eutelsat-3D - May 14, 2013
« Reply #102 on: 05/14/2013 05:48 pm »
Something I noticed in this article and in many other launches is that payloads are often placed into sub-orbital trajectories before the upper stage ignites and circularizes the orbit.

Wouldn't it make more sense from a mission safety standpoint to launch into *some* sort of orbit, so that if there's a failure of the upper stage you can at least get a chance to troubleshoot and save it? As opposed to just giving up right away.

Offline anik

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Re: LIVE: Proton-M/Briz-M launch with Eutelsat-3D - May 14, 2013
« Reply #103 on: 05/14/2013 06:17 pm »
Second Briz-M burn ended 23 seconds early :o

It is within limit.

Wouldn't it make more sense from a mission safety standpoint to launch into *some* sort of orbit, so that if there's a failure of the upper stage you can at least get a chance to troubleshoot and save it?

Proton-M can not deliver such heavy payload to an orbit.

Offline asmi

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Re: LIVE: Proton-M/Briz-M launch with Eutelsat-3D - May 14, 2013
« Reply #104 on: 05/14/2013 07:40 pm »
Proton-M can not deliver such heavy payload to an orbit.
I think this is not the only reason. It is more fuel efficient to circularize orbit at apogee, and third stage can't last that long nor be restarted. This is because at apogee thrust will be exactly perpendicular to the radius-vector and along velocity vector, so there will be no gravity loss.
« Last Edit: 05/14/2013 07:41 pm by asmi »

Offline Galactic Penguin SST

Burns 3 and 4 complete - all nominal.  :)
Astronomy & spaceflight geek penguin. In a relationship w/ Space Shuttle Discovery.

Offline Galactic Penguin SST

Hmm.... no one around at S/C separation?  ::)

Anyway that happened more than an hour ago.

ILS PROTON SUCCESSFULLY LAUNCHES EUTELSAT 3D FOR EUTELSAT
BAIKONUR COSMODROME, Kazakhstan, May 15, 2013 – International Launch Services (ILS) successfully placed the EUTELSAT 3D satellite into Geostationary Transfer Orbit (GTO), today, for Eutelsat Communications of Paris, France. With this mission, ILS, a leader in providing mission integration and launch services to the global commercial satellite industry, completed its 80th Proton launch overall and 3rd Proton launch in 2013.
The Proton Breeze M vehicle carrying EUTELSAT 3D launched from Pad 39 at the Baikonur Cosmodrome, today, at 22:02 local time(16:02GMT and 12:02 EDT). The satellite, built by Thales Alenia Space on the reliable Spacebus 4000 platform and weighing nearly 5.5 metric tons at liftoff, was released 9 hours and 13 minutes after a standard 5-burn Breeze M mission. This was the 7th Eutelsat satellite launched on a Proton and the 9th Thales Alenia Space Satellite launched on an ILS Proton.
EUTELSAT 3D will initially be located at 3 degrees east longitude, until the launch of EUTELSAT 3B in 2014, at which time it will continue its service at 7 degrees east longitude. From its orbital locations, the satellite will provide resources, reach and flexibility to address the high-growth rate in the video, data, telecom, and broadband markets. This Ku and Ka-band satellite will serve customers across Europe, Africa, the Middle East and Central Asia.
Since its maiden flight in 1965, this was the 386thaggregate launch for the Proton vehicle, including both Federal and commercial missions. The Proton Breeze M vehicle is developed and built by Khrunichev Research and Production Space Center of Moscow, Russia’s premier space industry manufacturer and majority shareholder in ILS.
ILS President Phil Slack stated, “The Proton vehicle and Eutelsat partnership dates back 13 years starting with the SESAT-1 launch on Proton in 2000. After seven launches, including the 50th ILS Proton launch in 2009 with the EUTELSAT 10A satellite, we are honored that Eutelsat continues to place their trust in us to enable the expansion of their business. Many thanks to the Eutelsat, Thales Alenia Space, Khrunichev and ILS teams for ensuring mission success with the launch of EUTELSAT 3D.”
Michel de Rosen, Eutelsat CEO, “We thank ILS and Khrunichev for this flawless launch which maintains our perfect track record of success since our first Proton flight in 2000. I’m happy to say that EUTELSAT 3D is well on its way to 3° East, where it will go into service next month. The performance of the Proton launcher gives us the flexibility we need to further increase our resources and commercial flexibility which is highly valued in our business.”
Astronomy & spaceflight geek penguin. In a relationship w/ Space Shuttle Discovery.

Offline Artyom.

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Re: LIVE: Proton-M/Briz-M launch with Eutelsat-3D - May 14, 2013
« Reply #107 on: 05/15/2013 02:40 am »

Offline Artyom.

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Re: LIVE: Proton-M/Briz-M launch with Eutelsat-3D - May 14, 2013
« Reply #108 on: 05/15/2013 02:55 am »

Online Satori

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Re: LIVE: Proton-M/Briz-M launch with Eutelsat-3D - May 14, 2013
« Reply #109 on: 05/15/2013 07:32 am »
Spacecraft separation took place at 0014:52.423UTC on May15th.

Congratulations for another successful mission!!

Offline input~2

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Re: LIVE: Proton-M/Briz-M launch with Eutelsat-3D - May 14, 2013
« Reply #110 on: 05/15/2013 09:04 am »
Spacecraft separation took place at 0014:52.423UTC on May15th.

Congratulations for another successful mission!!
This should be 0114:52.423UTC

Offline robertross

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Re: LIVE: Proton-M/Briz-M launch with Eutelsat-3D - May 14, 2013
« Reply #111 on: 05/15/2013 11:04 am »
Congrats all around. Quite the workhorse vehicle.

And thanks for such good coverage!

Offline Adonis1

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Re: LIVE: Proton-M/Briz-M launch with Eutelsat-3D - May 14, 2013
« Reply #112 on: 05/15/2013 03:10 pm »

Offline Adonis1

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Offline Moe Grills

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Re: LIVE: Proton-M/Briz-M launch with Eutelsat-3D - May 14, 2013
« Reply #114 on: 05/15/2013 08:40 pm »
  So that's nearly 410 GEO satellites up there now?
Wow!
I've read it's getting so crowded up there that on occasion some GEO or GTO spacecraft have drifted to within 200 feet of other satellites up there.

Offline akula2

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Re: LIVE: Proton-M/Briz-M launch with Eutelsat-3D - May 14, 2013
« Reply #115 on: 05/21/2013 09:46 am »
It was quite interesting to read. Please try to add more large res. pictures, thank you.

Every time I read about a Briz-M live launch, I get tensed as if it's my mission! Now, I feel like I'm relaxed  :P

@Moe Grills - I think it won't be the same (too much debris) from next decade (say 15 years). Either long-term clean up missions or apply restrictions on launches/nation.
« Last Edit: 05/21/2013 09:48 am by akula2 »

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