RE: ends of a era

From: Ted Molczan (molczan@rogers.com)
Date: Sat Apr 20 2002 - 13:07:54 EDT

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    Kevin Fetter wrote:
    
    > They titan 4's are getting replaced by the atlas 5 lauch vechical
    
    In terms of payload mass and length, the Delta IV-H (H denotes the
    heavy-lift variant) is the more direct replacement of the Titan IV. In
    fact, its Government Baseline fairing is a modified Boeing-built Titan
    IV fairing, with an overall length of 65 feet. The Lacrosses and
    KeyHoles require a fairing of about this length.
    
    > Now to wait and see how bright the atlas 5 will be in orbit.
    
    The Atlas 5 will leave a 3.05 m X 12.68 m Centaur stage in orbit. This
    length includes the nozzle.
    
    The Delta IV has 2 second stage variants that will reach orbit. The
    first is approximately 4 m x 12 m, including nozzle, and can be used
    with either the Delta IV-M or H (M denotes medium-lift); the second is
    approximately 5 m x 14 m, including nozzle, used exclusively by the
    Delta IV-H.
    
    So we can look forward to additional large, bright rocket bodies to
    observe.
    
    Ted Molczan
    
    
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