[FPSPACE] Soyuz LV question

[Nicolas PILLET]

Thank you very Sergei, this is very clear now !
It confirms some informations written in Asif Siddiqi's Bible !

Two more questions :

- at the moment of liftoff, how are separated the four arms ("tiulpann") of the launch complex from the lateral blocks ?

- see the picture I've joined : is it the valve which throw LOX after the burn completion ?

Thanks again !

Nicolas

> From: kirin at hippo.ru
> To: fpspace at friends-partners.org
> Date: Fri, 26 Sep 2008 19:08:11 -0400
> Subject: Re: [FPSPACE] Soyuz LV question
> 
> On Saturday 26 September 2009 09:38 am, Nicolas PILLET wrote:
> > Dear FPspacers,
> >
> > I have a question regarding the Blocks B/V/G/D/ attachment to the central
> > core (Block A).
> >
> > Lateral blocks litterally bear the central core. During the ascent, they
> > litterally PUSH the launcher, so if their RD-107 engines shut down, they
> > simply fall down on the pad, like it was the case during Foton-M n°1
> > launch, in october 2002.
> >
> > I am writing an article on the lateral blocks for my website, Kosmonavtika,
> > and you can see the draft here :
> > http://www.kosmonavtika.com/lanceurs/soyouz/tech/2/2.html
> >
> > My question is : do you know how the separation occur after the completion
> > of the lateral blocks' burn ? Do they NATURALLY fall down, or is there a
> > separation device to ensure they separate exactly at the good time ?
> >
> > Other question : how are the lateral blocks linked to the pad's "arms" ?
> > And how are the "arms" separated at the moment of the launch ?
> >
> > Thank you very much for sharing information !
> >
> > Regards,
> >
> > Nicolas
> 
> Bonjeur Nicolas!
> 
> 
> Separation of "carrots":
> http://cosmopark.ru/r7/511_615b.jpg
> 
> 1) the thrust of them is a little bit larger than core block
> 2) not long befefore separation the thrust is lowered (on some versions no)
> 3) lower link beams 
> http://cosmopark.ru/r7/511_40b.jpg
> http://cosmopark.ru/r7/511_145.htm
> are separated (explosive bolts)
> after this carrots begin rotation around upper cone because the trust remain.
> At this time people on the earth see so called cross in the sky- blocks shyne 
> in sunlights.
> 4) when they reach determined angle the hatch in upper tank of carrot is 
> opened. This is LOX tank and there is a pressure. Oxigen is thrown from some 
> kind of nozzles and move nose cone of carrot from core body.
> That's all.
> http://cosmopark.ru/r7/511_590b.jpg
> 
> 
> Launcher is hanged on launch frame again via  support cones of carrots- hole 
> for this may be seen
> http://internetelite.ru/cosmopark/r7/511_101pv.jpg
> http://internetelite.ru/cosmopark/r7/511_169b.jpg
> 
> besided  Il y a  such frames named UN (ustroystvo napravliajuschee)- they 
> don's permit ass of missile to shift.
> http://internetelite.ru/cosmopark/r7/511_191b.jpg
> 
> 
> Sincerely yours
> Sergey V. Andreev
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