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Article #7545

DC reentry

#7545
From: Henry Spencer
Date: Mon, 11 Jan 1993 20:36
16 lines
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In article <ewright.726776389@convex.convex.com> ewright@convex.com (Edward V. Wright) writes:
>... The Delta Clipper *is* shaped
>like a bullet.  It does not present its blunt surface (base) on entry.
>It makes a nose-first, high-angle-of-attack entry modelled after an
>ICBM-warhead trajectory.  This was chosen because of the large amount
>of data available from computer modelling of missile warheads.

Um, it may have shared a certain amount of design heritage with missile
warhead, but I'm pretty sure it does *not* share the trajectory, since
an ICBM-warhead trajectory involves retaining very high velocity down
almost to the ground.  (A certain amount of deceleration is inevitable
in thick low-altitude air.)  A spacecraft, e.g. DC, does almost all of
its decelerating at very high altitudes where the heat load is modest.
-- 
"God willing... we shall return."       | Henry Spencer @ U of Toronto Zoology
       -Gene Cernan, the Moon, Dec 1972 |  henry@zoo.toronto.edu  utzoo!henry
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Message-ID: <C0pIL6.BwF@zoo.toronto.edu>
Path: arc1-ca.pugleaf.net!sparky!uunet!utcsri!utzoo!henry
References: <ewright.726343877@convex.convex.com> <1993Jan7.034841.19216@ptdcs2.intel.com> <ewright.726515610@convex.convex.com> <1993Jan9.030346.9714@ptdcs2.intel.com> <ewright.726733131@convex.convex.com> <1993Jan11.154812.235@ke4zv.uucp> <ewright.726776389@convex.convex.com>

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Newsgroups: sci.space
Path: arc1-ca.pugleaf.net!sparky!uunet!utcsri!utzoo!henry
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: DC reentry
Message-ID: <C0pIL6.BwF@zoo.toronto.edu>
Date: Mon, 11 Jan 1993 20:36:40 GMT
References: <ewright.726343877@convex.convex.com> <1993Jan7.034841.19216@ptdcs2.intel.com> <ewright.726515610@convex.convex.com> <1993Jan9.030346.9714@ptdcs2.intel.com> <ewright.726733131@convex.convex.com> <1993Jan11.154812.235@ke4zv.uucp> <ewright.726776389@convex.convex.com>
Organization: U of Toronto Zoology
Lines: 16