Author Topic: Soyuz Q & A  (Read 30137 times)

Offline Stan Black

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Re: Soyuz Q & A
« Reply #60 on: 03/11/2016 09:17 PM »
The whole interstage (a/k/a transfer compartment) issue is new to me; apparently, the interstage is the responsibility of either the payload provider or the upper stage provider. So, RSC Energia seems to provide the transfer compartment for Progress and Soyuz, whereas Lavochkin handles the interstage for launches using Fregat, and TsSKB for launches using their payloads.

It would be interesting to see the index numbers for the interstages, and also if there are any other providers besides those mentioned above.



For Progress and Soyuz spacecraft the PKhO comes from RKTs-Progress, who also produce the Soyuz rocket and fairing too. (So confusing having satellites and factories and rockets all with the same name!) Same also for Resurs-P, Bars-M, Lotos-S, Pion-NKS. Note that an SZB is ordered for these satellites,
http://forum.nasaspaceflight.com/index.php?topic=17286.msg1500874#msg1500874

Lavochkin produce the Fregat upper stage, and it comes with a PKhO. They also produce the narrower fairings used with the Fregat.
https://forum.nasaspaceflight.com/index.php?topic=15064.msg1394949#msg1394949

The 81КС is the large ST-type fairing which is based on article 14С738, the Persona fairing. It is used with the Fregat and is produced by RKTs-Progress.
http://forum.nasaspaceflight.com/index.php?topic=17286.msg1500874#msg1500874

Now to launch Resurs-P № 2 on a Soyuz, it was decided to use the larger 81КС fairing. As that launch did not require a Fregat, which would have come with a PKhO, RKTs-Progress supplied one instead. It was referred to as 196КС.
http://www.samaratoday.ru/img/2014/12/KA-Resurs-P-2.jpg
http://forum.nasaspaceflight.com/index.php?topic=24942.msg1502258#msg1502258

Offline Danderman

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Re: Soyuz Q & A
« Reply #61 on: 03/11/2016 10:54 PM »
Even within these companies, the masses of the transfer compartments must differ between classes of payloads. For example, the transfer compartment used on the 2 ton Soyuz 2-1V and the Volga stage/Kanopus ST must be much lighter than the transfer compartment used on the Soyuz 2-1B and the Volga stage for the Lomonsov spacecraft.

Finding the index numbers of these transfer compartments might be informative about the nature of the payload for some launches.

Offline Danderman

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Re: Soyuz Q & A
« Reply #62 on: 03/12/2016 05:14 PM »

Now to launch Resurs-P № 2 on a Soyuz, it was decided to use the larger 81КС fairing. As that launch did not require a Fregat, which would have come with a PKhO, RKTs-Progress supplied one instead. It was referred to as 196КС.

Also, according to the NK Forum:

196КС - переходный отсек (ПхО) РН "Союз-2" для КА "Ресурс-П"

http://novosti-kosmonavtiki.ru/forum/forum14/topic12755/

In the samspace.xls file posted here some time ago, I found this:

Выдача заключения  по статической прочности БВ "Волга" и ПхО 98 КС

which is another index number for another ПхО.

"98KC" appears in another thread here in regards to the launcher for Kanopus-ST, so I am assuming that this is a light weight version of the ПхО.

At this site:

http://www.tenderguru.ru/planzakup_info_new.php?id=155593773

there is a tender called:

Выдача заключения о статической прочности изделия 218КС с БВ "Волга" и ПхО 220КС о допуске летным испытаниям

which refers to ПхО 220КС, yet another index number for one of these, used with Volga.

and then, as Stan pointed out, we have

http://docs.cntd.ru/document/901941098

with the statement:

Для КА 11Ф695М в составе РН "Союз-2" предусматривается использование СЗБ типа СЗБ 14С74 с диаметром ГО - 3,7 м и длиной ГО - 10,7 м. СЗБ 14С74 разрабатывается как вновь унифицированный для использования его в составе РН "Союз-2" с КА различного назначения. Масса ГО 14С74 составляет 2100 кг, масса ПхО - 350 кг.

which lists an unknown PxO as having a mass of 350 kg for this version of the Kobalt-M spacecraft.







« Last Edit: 03/12/2016 05:21 PM by Danderman »


Offline Danderman

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Re: Soyuz Q & A
« Reply #64 on: 03/12/2016 10:59 PM »
It is possible 196КС is a complete SZB too; it includes an 81КС GO.
http://novosti-kosmonavtiki.ru/forum/messages/forum14/topic12755/message1316921/#message1316921

I think 81КС is just the GO.

Here is the verbiage for the above link:

Quote
По Договору застраховано следующее имущество: Головной обтекатель 81 КС (ГО 48/134) и Переходный отсек 196КС (ПхО 48/134) для КА "Ресурс-П" №2. (далее по тексту ГО 48/134 и ПхО 48/134 -"Груз") .

It's pretty explicit that 81KC is the fairing and 196KC is the PxO.  For whatever reason, the PxO is given a factory number of 48/134, same as the payload fairing.

The index numbering system for the PxO seems inconsistent.


« Last Edit: 03/12/2016 11:17 PM by Danderman »

Offline Stan Black

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Offline alvie90s

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Re: Soyuz Q & A
« Reply #66 on: 03/29/2017 02:11 AM »
Hello everyone,

Can you please tell me what Mission is this one (shown on the video) and when exactly occurred please. Thanks in advance.




Offline Olaf

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Re: Soyuz Q & A
« Reply #67 on: 03/29/2017 07:38 AM »
This was the launch of Soyuz TM-31 with the first Expedition Crew to the ISS on October, 31 2000.

Offline alvie90s

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Re: Soyuz Q & A
« Reply #68 on: 03/29/2017 01:47 PM »
You're great thanks! hey is there like a better video Quality for this mission? if yes can you share it please.

Offline whitelancer64

Re: Soyuz Q & A
« Reply #69 on: 04/11/2017 01:51 PM »
Does anyone know - is Soyuz' parachute reused?
"One bit of advice: it is important to view knowledge as sort of a semantic tree -- make sure you understand the fundamental principles, ie the trunk and big branches, before you get into the leaves/details or there is nothing for them to hang on to." - Elon Musk
"There are lies, damned lies, and launch schedules." - Larry J

Offline DatUser14

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Re: Soyuz Q & A
« Reply #70 on: 04/20/2017 01:14 PM »
Is there an Annotated image of what all the numbers mean on the HUD during docking? http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=41705.0;attach=1422859;sess=45605
Where can I apply for SpaceX fanboy?.

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