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#300
by
Danderman
on 28 Feb, 2009 14:24
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Does anyone have a link to a gallery of photos of the MAI laboratory in Moscow?
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#301
by
Generacy
on 06 Mar, 2009 00:37
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I know that the Soyuz can dock to several locations on the ISS; I was wondering though, do they usually dock to the same location? Thanks for the info!
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#302
by
Danderman
on 06 Mar, 2009 16:31
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I know that the Soyuz can dock to several locations on the ISS; I was wondering though, do they usually dock to the same location? Thanks for the info!
No. Soyuzes have docked at FGB Nadir, SM Aft, and Pirs nadir.
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#303
by
Generacy
on 07 Mar, 2009 13:17
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No. Soyuzes have docked at FGB Nadir, SM Aft, and Pirs nadir.
Is there any reason to dock at to one location rather than another?
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#304
by
Danderman
on 07 Mar, 2009 14:38
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No. Soyuzes have docked at FGB Nadir, SM Aft, and Pirs nadir.
Is there any reason to dock at to one location rather than another?
Yes. For one thing, at times SM Aft will be occupied by ATV. For another, its not really desired to have Soyuz at Pirs nadir, since Pirs contains an airlock, and during EVAs, a member of the crew would be cut off by the vacuum of space from the Soyuz lifeboat.
Also, its a little harder for Progress to dock at FGB Nadir, so Soyuz is preferred there.
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#305
by
erioladastra
on 08 Mar, 2009 05:42
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No. Soyuzes have docked at FGB Nadir, SM Aft, and Pirs nadir.
Is there any reason to dock at to one location rather than another?
We prefer to have either a Progress or nothing at SM aft to allow for resboost. As noted, on DC1 is undesireable since that is also the Russian airlock. We have our first zenith docking coming up this year I believe.
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#306
by
Ronsmytheiii
on 09 Mar, 2009 01:10
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No. Soyuzes have docked at FGB Nadir, SM Aft, and Pirs nadir.
Is there any reason to dock at to one location rather than another?
We prefer to have either a Progress or nothing at SM aft to allow for resboost. As noted, on DC1 is undesireable since that is also the Russian airlock. We have our first zenith docking coming up this year I believe.
Consolidated Launch Manifest has listed:
10 November - Progress M-SO2/MRM-2 - Soyuz-FG - Baikonur
Although it is so far back in the calendar that I would not be surprised if it were to be delayed until next year
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#307
by
Danderman
on 09 Mar, 2009 01:43
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Regardless of when MRM-2 is launched, it will present a problem for the SSP. My understanding is that -R bar dockings with the Russian segment will not be easy, and the preferred architecture would be to relocate Soyuzes from other ports to SM Zenith. This leads to the situation - again - where a crew member will have to sit inside the Soyuz DM during EVAs from MRM-2.
What I don't really know is the plan to dock Progress S02 to SM Zenith, on the surface, that would seem to be a dicey maneuver.
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#308
by
Kaputnik
on 11 Mar, 2009 11:36
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Re: Soyuz mass savings.
The strange thing is, the earliest versions of Soyuz actually had the lowest mass. I presume that the current spacecraft has much increased capabilities in some repsects, but nevertheless the old ones with their clunky computers and stone-age materials remain the lowest mass versions ever flown.
Maybe it's a bit like what happens with cars- a modern Polo is heavier than a MkI Golf was, despite being one class smaller.
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#309
by
Spacenick
on 11 Mar, 2009 19:39
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But on planes it's the other way around, most modern planes are much lighter today than older plains in the same class. At least, if class is defined by speed, number of passengers and capability.
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#310
by
Danderman
on 11 Mar, 2009 23:58
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Re: Soyuz mass savings.
The strange thing is, the earliest versions of Soyuz actually had the lowest mass. I presume that the current spacecraft has much increased capabilities in some repsects, but nevertheless the old ones with their clunky computers and stone-age materials remain the lowest mass versions ever flown.
Maybe it's a bit like what happens with cars- a modern Polo is heavier than a MkI Golf was, despite being one class smaller.
The reason that Soyuzes today are heavier is because the launcher is slightly more capable today, thus allowing more systems to be flown, or more consumables. As an example, the propulsion system today carries 880 kg of prop vs 700 for Soyuz-T, and as low as 500 kg for Soyuz OK.
Moreover, Soyuz carries 3 crew in full spacesuits, whereas first generation did not provide for spacesuits, with tragic results.
And, as Jim Oberg has told us, during the 1980's, Soyuz could only carry 3 crew to a space station if that space station were in a very low orbit.
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#311
by
Spacenick
on 12 Mar, 2009 19:45
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So, can you tell us any figures how this changed Soyuz delta-v budget?
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#312
by
Danderman
on 13 Mar, 2009 23:12
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So, can you tell us any figures how this changed Soyuz delta-v budget?
I believe that both Mir and ISS have a requirement that Soyuz is capable of 3 docking attempts, whereas the original Soyuz was only capable of one or two, depending on how bad the first miss was. Moreover, the newer stations fly much higher than the early Salyuts. You can figure some of this out yourself by the rule of thumb that each additional kilometer of station altitude requires a kilogram of prop for altitude raising (more or less).
Soyuz T-15, with only 700 kg of prop, performed all sorts of magical orbital maneuvers, and many redockings, but I have always believed that the Russians were using alien technology for that mission.
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#313
by
Danderman
on 14 Mar, 2009 20:14
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Question:
When Soyuz leaves ISS and fire its retrorockets to return to Earth, I believe that retrofire occurs near the west coast of Africa. If so, how is this monitored by Mission Control, how does the radiolink work?
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#314
by
hygoex
on 09 Apr, 2009 01:03
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How do Soyuz crews get in the spacecraft when it is on the launchpad?
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#315
by
Jim
on 09 Apr, 2009 01:25
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How do Soyuz crews get in the spacecraft when it is on the launchpad?
Elevator on the service tower. The tower retracts long before launch
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#316
by
MKremer
on 09 Apr, 2009 01:47
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#317
by
gwiz
on 09 Apr, 2009 10:56
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How do Soyuz crews get in the spacecraft when it is on the launchpad?
Through hatches to pass through the launch fairing, into the orbital module then down into the descent module.
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#318
by
agman25
on 09 Apr, 2009 13:26
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What kind of writing instruments does the Soviet/Russian space program actually use during spaceflight ?
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#319
by
Spacenick
on 09 Apr, 2009 21:07
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pen and paper?
