Author Topic: Proton-M launch with three Glonass-M satellites - December 25, 2008 (Read 39893 times)

Chris Bergin · « **Reply #20 on:** 12/16/2008 04:12 pm »

Quote from: ssb on 12/16/2008 03:51 pm

Very good in-depth overview here (10 years old though): http://ub.unibw-muenchen.de/dissertationen/ediss/rossbach-udo/inhalt.pdf
High quality recent news can be found here: http://www.insidegnss.com/glonass

a nitpick: there is no "Glonass-M system". There is GLONASS system and there are two satellite types, commonly referred as "glonass" and "glonass-m".

Very useful, thanks!

anik · « **Reply #21 on:** 12/17/2008 04:39 pm »

http://www.federalspace.ru/NewsDoSele.asp?NEWSID=5031

Electrical checks of the ascent unit were performed today.

HIPAR · « **Reply #22 on:** 12/17/2008 11:16 pm »

It's interesting how the three satellites are arranged. How will the individual satellites be separated and deployed into their individual locations in the orbital plane?

--- CHAS

Liss · « **Reply #23 on:** 12/18/2008 10:29 am »

Quote from: HIPAR on 12/17/2008 11:16 pm

How will the individual satellites be separated and deployed into their individual locations in the orbital plane?

By carefully planned maneuvers including going to a slightly higher or lower orbit. The procedure takes up to a month.

sammie · « **Reply #24 on:** 12/18/2008 01:14 pm »

But these maneuvers are made by the satellites themselves after seperation. Are all 3 satellites released by the upper stage at (nearly) the same time?

anik · « **Reply #25 on:** 12/18/2008 02:00 pm »

http://www.federalspace.ru/NewsDoSele.asp?NEWSID=5039

Today the ascent unit is attached to Proton-M rocket. The rollout of rocket to the launch pad on site 81 is planned on December 22.

HIPAR · « **Reply #26 on:** 12/18/2008 03:07 pm »

Quote from: sammie on 12/18/2008 01:14 pm

But these maneuvers are made by the satellites themselves after seperation. Are all 3 satellites released by the upper stage at (nearly) the same time?

I had envisioned them being 'dropped off' at their individual orbital slots. That would require some delicate maneuvering so Delta V orbital changes, as Liss mentions, makes more sense.

--- CHAS

Gorizont · « **Reply #27 on:** 12/22/2008 10:59 am »

The Proton-M rocket with Block-DM upper stage was rolled out to the pad 81/24 this morning.
http://www.roscosmos.ru/NewsDoSele.asp?NEWSID=5072

Soeren

anik · « **Reply #28 on:** 12/24/2008 04:48 pm »

According to Novosti kosmonavtiki forum, tomorrow's launch (liftoff at 10:43 UTC) will be shown live on our Vesti TV-channel.

http://www.vesti.ru/video1.asx?vid=onair

Gorizont · « **Reply #29 on:** 12/24/2008 08:17 pm »

Live-webcast, thats fine!
Thank you very much, Anik!

Soeren

DavisSTS · « **Reply #30 on:** 12/24/2008 08:28 pm »

Very early morning for the US. Will someone be kind enough to grab some screenshots from the webcast?

HIPAR · « **Reply #31 on:** 12/24/2008 10:27 pm »

On the pad. Foul weather? No problem.

http://sidt.gpsworld.com/gpssidt/System+Design+and+Test+News/GLONASS-Launch-Update-Satellites-on-the-Launch-Pad/ArticleStandard/Article/detail/573051?contextCategoryId=1385

--- CHAS

dwmzmm · « **Reply #32 on:** 12/25/2008 04:50 am »

What is the launch time at US Central Standard Time?

Svetoslav · « **Reply #33 on:** 12/25/2008 09:22 am »

Вести.Ru TV: Awaiting broadcast.

William Graham · « **Reply #34 on:** 12/25/2008 09:32 am »

Some coverage now, but they'll probably cut away and back.

Satori · « **Reply #35 on:** 12/25/2008 09:34 am »

A quick look at the Proton-M on pad from Vesti.ru...

Svetoslav · « **Reply #36 on:** 12/25/2008 09:34 am »

Ten minutes to launch, first snapshot...

William Graham · « **Reply #37 on:** 12/25/2008 09:39 am »

Five minutes to launch. Still waiting for coverage to resume.

IIRC, on the September GLONASS launch, coverage didn't begin until about 30 seconds before launch, and if you factor in webcast lag, that was after the scheduled launch time.

Lag is about 50 seconds today.

Svetoslav · « **Reply #38 on:** 12/25/2008 09:41 am »

We have coverage!

William Graham · « **Reply #39 on:** 12/25/2008 09:41 am »

More coverage.

Nice wide shot of the pad, showing the tower.