Re: Reentry seen

From: Harro.Zimmer (
Date: Thu Jul 06 2000 - 13:53:53 PDT

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    1990-112F (#21025) Proton  AUX MOTOR of Block DM upper stage
    The Proton Block DM  AUXILIARY MOTORS (aka SOZ or ullage motors) are relatively
    small objects with a moderate mass - not in the order of tons !
    For the 11S86 version the Dimension (maximal diameter and maximal length)
    is 55 x 115 cm and  for the versions 11S861 and 11S861-1  68 x 90 cm. The 
    empty mass is usually around 100 - 106 kg. 
    Last year Vladimir Agapov (KIAM) supplied kindly this information to me and I
    work with it frequently in my MPM Decay prediction program.    
    Berlin, Germany
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