[FPSPACE] Soyuz LV question

[Sergey V. Andreev]

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