Author Topic: Block DM-03 11C861-03 use with GLONASS  (Read 2743 times)

Offline Stan Black

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Block DM-03 11C861-03 use with GLONASS
« on: 12/22/2008 06:17 PM »
Using Google to search for 11С861-03 (Russian spelling) came across annual reports for Energia (www.e-disclosure.ru)... Now I can only read them from the Google cache.

However in 2004 there is mention 11С861-03 with GLONASS?



Also found out Globus in 2004 used DM-2 105L
« Last Edit: 01/22/2009 07:39 PM by Stan Black »

Offline Jim

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Re: 11C861-03
« Reply #1 on: 12/22/2008 06:53 PM »
and this means?

Offline Stan Black

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Re: 11C861-03
« Reply #2 on: 12/22/2008 07:15 PM »
and this means?

Sorry, half baked ramblings after I stumbled across something I did not quite understand.

GLONASS is the Russian navigation satelites; currently launched by Proton-M and using Energia sourced fourth stage the 11C861 or DM-2. Now there is a new variant the 11C861-03 or DM-03 which is to be used for the Energia built Jamal-300 satelite pair. But in 2004?

Offline pm1823

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Re: 11C861-03
« Reply #3 on: 12/22/2008 08:52 PM »
Everything with ~15t fuel load are current custom mods of 11C861-01 for different SCs and LVs. The new Dvina-DM (11C861-03 or DM-03) will have bigger tanks on 18.7t and I'm sure you can't miss a such difference. :)
« Last Edit: 12/22/2008 09:04 PM by pm1823 »

Offline jcm

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Re: 11C861-03
« Reply #4 on: 12/22/2008 09:20 PM »
Everything with ~15t fuel load are current custom mods of 11C861-01 for different SCs and LVs. The new Dvina-DM (11C861-03 or DM-03) will have bigger tanks on 18.7t and I'm sure you can't miss a such difference. :)

And of course, readers should note that the "C" here is the Cyrillic letter corresponding to S, so we normally call it the 11S861 in English.
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Offline Danderman

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Re: 11C861-03
« Reply #5 on: 12/24/2008 10:29 PM »
I am guessing that the Dvina-DM-03 has larger prop tanks to take advantage of Proton M's greater launch capability, although an extra 3 tons would seem to exceed the increased payload mass over Proton-K.

I also recall that there were multiple variants of Block DM over the years related to whether the payload controlled the upper stage or whether the upper stage used an internal control unit. Some of these variants also had identifiers such as DM-03, DM-04.

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