Re: The decay of the GLONASS launch objects

From: Phillip Clark (
Date: Sun Dec 02 2001 - 12:13:04 EST

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    On Sun, 2 Dec 2001, Paul J Henney wrote:
    > I assume by  "casing"  we mean payload fairing? Or is this something
    > different??
    In my Worldwide Satellite Launches I call the second object which the
    four-stage Proton-K leaves in LEO (other than the Proton-K third stage) as
    the "fourth stage casing".   At launch the Blok DM class fourth stage is
    encased in a cylinder and this is discarded in LEO after separation from
    the third stage and before the fourth stage performs its first burn.
    Since it is a hollow cylinder it always decays from orbit far more rapidly
    than the third stage.
    The payload fairing is completely different, since the fourth stage casing
    does _not_ cover the payloads at launch.
    Phillip Clark
    Phillip S Clark                                  Flat 2 Wellington Houses
    Molniya Space Consultancy                        Castle Hill Passage
    Compiler/Publisher, Worldwide Satellite          Hastings
        Launches                                     E Sussex  TN34 1PG
    Specialist in "space archeology" - the older and more obscure the more 
    interesting it is !
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