[FPSPACE] Soyuz LV question

[Sergey V. Andreev]

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