Re: shuttle breaks up on re-entry

From: Robert J. Bradbury (bradbury@aeiveos.com)
Date: Mon Feb 03 2003 - 08:22:38 MST

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    On Sun, 2 Feb 2003, Mike Lorrey wrote:

    > If you don't need a manned vehicle, why not just use one of the heavy
    > Titan boosters? It has performance between the Saturn IB and V vehicles.

    The new Delta-IV Heavy has a lift capacity that exceeds the Titan IVB.
    If you want more than that you want to use an Energia (>3x the capacity
    of a Delta-IV Heavy). I suspect most of the capacity for building the
    Energia still exists in Russia and/or the Ukraine (in contrast to the
    Saturn V). If you substituted the RD-170 engines in the Energia with
    the RD-180 engines that I believe Pratt & Whitney is now producing,
    you could probably gain another 5% lift capacity.

    We don't really have a problem with a lack of lift capacity using
    disposable boosters.

    Robert

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