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- Newsgroups: sci.space
- Path: 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
-
- 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
-