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#200 by Danderman on 29 Apr, 2008 14:41
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anik - 29/4/2008 6:49 AM Argon-16 computer is in PAO (Instrumentation/Propulsion Module). It operates Soyuz flight from launch to PAO separation. KS-020M computer is in SA (Descent Module). It operates Soyuz flight after PAO separation.
Thank you for the response.Will KS-020M be replaced at the same time as Argon-16?
Answered my own question, from Suzy's web site:
http://suzymchale.com/kosmonavtka/soyuz.html
"The TsVM-101 will initially be installed in the forward Orbital Module of the Soyuz and Progress, but it is planned to later move it to the Descent Module to take over re-entry control functions from the KS-020M computer that currently handles this, and enable the TsVM-101 to be reused. This will not happen before 2010."
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#201 by anik on 29 Apr, 2008 15:44
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Danderman - 29/4/2008 6:41 PM
Answered my own question, from Suzy's web site:
http://suzymchale.com/kosmonavtka/soyuz.html
"The TsVM-101 will initially be installed in the forward Orbital Module of the Soyuz and Progress, but it is planned to later move it to the Descent Module to take over re-entry control functions from the KS-020M computer that currently handles this, and enable the TsVM-101 to be reused. This will not happen before 2010."
This description has big mistake. TsVM-101 will be initially installed in place of Argon-16 in the Instrumentation/Propulsion Module (PAO), not in the Orbital Module (BO). -
#202 by Spacenick on 29 Apr, 2008 17:07
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Another Soyuz question, how and where do the cosmonauts sleep in the 3 days between launch and ISS docking, do they have sleeping bags or do they sleep in the crew couches?
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#203 by Nicolas PILLET on 29 Apr, 2008 18:11
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Spacenick - 29/4/2008 7:07 PM
Another Soyuz question, how and where do the cosmonauts sleep in the 3 days between launch and ISS docking, do they have sleeping bags or do they sleep in the crew couches?
I don't know if they have sleeping bags, but generally they don't sleep in the Kazbek-UM couches. They like to put their body in the longitudinal axis of the spacecraft, in order not to feel its rotation (due to the "barbecue" mode). -
#204 by Spacenick on 29 Apr, 2008 18:44
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do you have any links about this mode, doesn't sound too comfortable
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#205 by Suzy on 29 Apr, 2008 20:32
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Oops, made the correction, thanks!
Quoteanik - 30/4/2008 1:44 AM
QuoteDanderman - 29/4/2008 6:41 PM Answered my own question, from Suzy's web site: http://suzymchale.com/kosmonavtka/soyuz.html "The TsVM-101 will initially be installed in the forward Orbital Module of the Soyuz and Progress, but it is planned to later move it to the Descent Module to take over re-entry control functions from the KS-020M computer that currently handles this, and enable the TsVM-101 to be reused. This will not happen before 2010."
This description has big mistake. TsVM-101 will be initially installed in place of Argon-16 in the Instrumentation/Propulsion Module (PAO), not in the Orbital Module (BO). -
#206 by Danderman on 29 Apr, 2008 21:11
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Nicolas PILLET - 29/4/2008 11:11 AM
QuoteSpacenick - 29/4/2008 7:07 PM Another Soyuz question, how and where do the cosmonauts sleep in the 3 days between launch and ISS docking, do they have sleeping bags or do they sleep in the crew couches?
I don't know if they have sleeping bags, but generally they don't sleep in the Kazbek-UM couches. They like to put their body in the longitudinal axis of the spacecraft, in order not to feel its rotation (due to the "barbecue" mode).My understanding is/was that Soyuz does not perform a barbeque roll like Apollo after TLI, instead, Soyuz maintains a solar inertial attitude, with the solar arrays pointed at the sun, and the radiator hidden in shadow. This requires a slow spin around the X axis, not the Y axis.
I could be wrong, though. However, if I am wrong, and Soyuz spends half its time in the sunlit portion of each orbit with the solar arrays pointed away from the sun, well, wow, that would be stupid.
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#207 by Suzy on 01 May, 2008 02:24
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Suzy - 28/4/2008 2:25 PM What are the descent modes of the Soyuz? According to this post there are 4: controlled automatic, controlled manual, and two ballistic - but what are the specifics of each? I can't find clear details of these anywhere (including the "SoyCOM" Manual).
Found the answer in the SoyCOM Manual:
Automatically Controlled Descent (AUS, Avtomaticheskii Upravlyaemyi Spusk)
This is the nominal and preferred descent mode, where the spacecraft lands in a preselected landing area. The crew input the trajectory before descent, and the onboard computer takes care of the actual descent.
Manually-Controlled Descent (RUS, Ruchnoe Upravlenie Spuskom)
The crew can transfer to this mode from the AUS mode anytime during the autonomous flight of the SA, Descent Module. Transfer to the RUS mode is irreversible. In manually-controlled descent the cosmonaut using the RUS Handle buttons issues commands for the basic roll angle decrements of 15 degrees each, the maximal possible decrement being 45 degrees. In case of the attitude control equipment sensor failure the RUS mode is impossible.
Ballistic Descent (BS, Ballisticheskii Spusk)
The BS is the descent with the average-integral zero lift. The BS is a backup descent mode used in case of the RUS mode failure or “nominally” is most emergency descent modes. However this mode, just like the AUS mode, can be selected in advance or can be transferred to from the controlled descent procedure in case off-nominal deviation occurs in the SA or its system operation. The latter case is called the “fall into BS”.
The ballistic descent can be executed in case of the descent control system failures resulting in loss of the spacecraft or the SA attitude control, failures in the descent reaction control system (the SA attitude control thrusters) etc. In all such cases the SA is driven into rotation about its velocity axis Oxv with the rate of ω.x=12.5 degr./s. The BS trajectory mainly features the atmosphere part range decrease by approximately 400 km with respect to the controlled descent and also the axial acceleration increase up to n.x=8.5 g.
In case of a failure in the primary equipment set used in the ballistic descent, transfer to the backup ballistic mode (BSP – Ballisticheskii Spusk Rezervnyi) is executed.
Unconditional compulsory selection of the ballistic descent is provided for the urgent descent from orbit in case of off-nominal situations jeopardizing the crew safety (depressurization, fire etc.). The ballistic (trajectory) support for such situations is envisaged: once a day (if no dynamic operations are accomplished) form #23-14 is uplinked to the crew onboard the ISS, that form containing data on the engine ignition and the retrofire impulse value for each revolution. The ignition time is selected so as to ensure landing in areas which are called backup landing areas and which are selected in advance taking into account the arbitrary position of the orbital path with respect to the Earth’s surface.
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#208 by TALsite on 09 May, 2008 15:13
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Posted in “Plan of Russian space launches”Quote
anik - 1/5/2008 8:32 AM
May 25 – Soyuz TMA-15 (No. 225) – Soyuz-FG – Baikonur
October 1 – Soyuz TMA-16 (No. 226) – Soyuz-FG – Baikonur
November 16 – Soyuz TMA-01M (No. 701) – Soyuz-FG – Baikonur
Two questions for you, Anik:
Does the spacecraft denomination TMA-xx will change to TMA-xxM, with the 700 series ?
and
Does Soyuz No.701 fly before Soyuz No.227 (TMA-17)?
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#209 by anik on 09 May, 2008 15:29
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TALsite - 9/5/2008 7:13 PM
Does the spacecraft denomination TMA-xx will change to TMA-xxM, with the 700 series?
Yes, I suppose, because Progress designation has been officially changed from Progress M-XX to Progress M-XXM with the changing of computer from Argon-16 to TsVM-101.QuoteTALsite - 9/5/2008 7:13 PM
Does Soyuz No.701 fly before Soyuz No.227 (TMA-17)?
Yes, I have heard RSC Energia will try to launch ship no. 701 in November 2009 before ships nos. 227, 228, 229 and 230. -
#210 by Zpoxy on 11 May, 2008 04:03
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I have a question about the Soyuz booster launch sequence. Are there any on pad cut-off modes in the final 60 seconds of the countdown? I notice that there are two umbilical masts that separate at 45 and 15 seconds. I assume one of the uses is LOx fill, press and vent for the stages of the rocket. Can they be remotely reconnected if the countdown should stop after they disconnect but before liftoff? Or, is an on pad cutoff just not part of the Soyuz operations?
Thanks in advance. -
#211 by Citabria on 13 May, 2008 14:39
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Here's a diagram from a 1975 ASTP NASA press kit. It shows that the OM has no proper hatch where it connects to the DM - just a swing-down grill (#23) to cover the opening (obviously the DM has a proper hatch there). Could it be that the end-of-mission OM separation thrust is powered merely by air escaping the OM through the grill?
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#212 by Capt. David on 14 May, 2008 03:54
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Zond - 17/4/2008 4:20 PM
Excalibur Almaz claims they own several TKS capsules and that they will use these capsules to launch people into space. Has anybody heard any rumours of Krunichev (or somebody else) actively working on refurbishing these capsules?
Excalibur Almaz is working with NPO Mash on updating the VA capsules (as well as other "bigger" Almaz components
) to make them "tourist friendly".
Khrunichev does have one of the old unlaunched capsules (I'm pretty sure it would have been the bottom capsule of the canceled LVI-5 Proton/Dual VA launch test), but the actual process of refurbishing these capsules is proprietary information of NPO Mash.
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#213 by Nicolas PILLET on 17 May, 2008 10:24
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Here is a picture took in the MIK-254 on 6th april 2008 by Vassili Petrovitch, a French guy who was in the same trip that Rui Barbosa...
Do you know what it is
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#214 by anik on 17 May, 2008 10:43
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Nicolas PILLET - 17/5/2008 2:24 PM
Do you know what it is?
DM-SLB upper stage, obviously.
http://www.tsenki.com/NewsDoSele.asp?NEWSID=565 -
#215 by Nicolas PILLET on 17 May, 2008 11:52
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But I thought that The DM-SLB was in area 31 ? Was it temporarily stowed in MIK-254 ?
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#216 by anik on 17 May, 2008 12:16
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Nicolas PILLET - 17/5/2008 3:52 PM
But I thought that The DM-SLB was in area 31? Was it temporarily stowed in MIK-254?
In MIK on area 254 - tests of DM-SLB systems are performing; in MIK-40D on area 31 - the satellite is testing and the ascent unit (KGCh: transfer compartment + upper stage + adapter + satellite + fairing) is assembling; in MIK on area 42 - stages of Zenit-3SLB rocket are assembling and the docking with ascent unit is performing. -
#217 by Nicolas PILLET on 17 May, 2008 12:29
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OK, thank you very much Anik !
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#218 by Spacenick on 25 May, 2008 17:55
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What is the current maximum altitude for Soyuz and what limits it?
Will it be increased with TMA-T* because they are lighter? And what information is available on the new flight computer and the old one, why does the old one week 80 kgs? -
#219 by anik on 25 May, 2008 19:11
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What is the current maximum altitude for Soyuz and what limits it?
Approximately 425 km.
And what information is available on the new flight computer and the old one, why does the old one week 80 kgs?
Old computer is Argon-16, which has weight of 70 kg. See more about it in Russian on http://www.argon.ru/?q=node/6
New computer is TsVM-101, which has weight of 8.5 kg. See more about it in Russian on http://www.submicron.ru/products/1/
) to make them "tourist friendly". 