[FPSPACE] Soyuz LV question

[Nicolas PILLET]

Some pictures of MAI are here :

http://www.buran-energia.com/blog/mai-museum/

> From: kirin at hippo.ru
> To: fpspace at friends-partners.org
> Date: Sun, 28 Sep 2008 00:19:28 -0400
> Subject: Re: [FPSPACE] Soyuz LV question
> 
> On Saturday 26 September 2009 03:55 pm, David R. Woods wrote:
> >  Guys,
> >
> >  I had an opportunity to watch a Soyuz launch out of Complex-1 at Baikonur
> > an number of years ago.  I videotaped the whole thing and when I watched it
> > later at home, I could see the strap-on separations: four white dots
> > against the blue sky drifting away from a fifth center dot core stage.  I
> > have also been to MAI Lab-601 to see the  R-7 there and another one in
> > Orevo, and examine the top attachment mechanism for each strap-on against
> > the core stage.  It is my impression that the RD-107s on the strap-ons
> > continue to burn whatever residual propellant is left after separation (as
> > I witnessed in my video), so they do not simply fall away due to lack of
> > thrust.  If you look as pictures of a Soyuz booster rolling out to the pad,
> > you can see a small umbilical running down the outside of the core stage to
> > the top of the upper attachment mechanisms.  The only reason for something
> > like that is for wiring or a cable to initiate the release.  Therefore,
> > release is a commanded rather than lack of thrust process.  Releasing the
> > bottom attachment first may be correct, but it sounds a little dangerous,
> > because the strap-ons could rotate inward and crunch into the core stage. 
> > It has always been my impression that the release sequence starts with
> > detachment at the top, followed by venting of the pressurized LOX tank that
> > is nearly empty.  That starts the strap-ons rotating away (pivoting at the
> > base) from the core.  The bottom attachments then release the whole
> > assembly and they go their separate ways.
> >
> >  Dave
> bending very low- oh your majesty! can you share some images for cosmopark ru?
> :)
> Cruel people in MAI forbid me to make photoes of R-7 inspite I said them that 
> it is manufactured in Samara and hence I have even blueprints!
> 
> 
> Sergey
> 
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