Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!killer!ames!elroy!jpl-devvax!jplpro!leem
From: leem@jplpro.JPL.NASA.GOV (Lee Mellinger)
Newsgroups: sci.space.shuttle
Subject: Re: Shuttle landing speed
Message-ID: <3031@jpl-devvax.JPL.NASA.GOV>
Date: 11 Oct 88 20:40:02 GMT
References: <219@tekn01.chalmers.se>
Sender: news@jpl-devvax.JPL.NASA.GOV
Reply-To: leem@jplpro.JPL.NASA.GOV (Lee Mellinger)
Organization: Jet Propulsion Laboratory, Pasadena CA.
Lines: 29

In article <219@tekn01.chalmers.se> d88_pata@tekn01.chalmers.se (PATRIK PETTERSSON) writes:
|
|Two hours ago, the shuttle landed in California. Here in Sweden I heard
|on the radio some very interesting data. They said that when the vehicle
|approched the coast of California, its speed was about 4 Mach. Later it
|was mentioned that the shuttle's speed when it came in for landing was 2
|Mach. Is this really so? Does anyone know how fast Discovery were travelling
|at the moment of touchdown? Surely it must have been lower than the speed
|of sound, or?? Finally: does the spaceshuttle have any means to decrease its 
|velocity with flaps or something alike?
|
|	Patrik Pettersson
|	Chalmers University of Technology
|	Sweden

The shuttle crosses the Edwards field boundry at about Mach 1, and the
touchdown speed is about 210mph (338kmph) +/- a few mph depending on
gross weight.  The shuttle orbiter has speed brakes in the form of a
split rudder.

Lee

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|Lee F. Mellinger                         Jet Propulsion Laboratory - NASA|
|4800 Oak Grove Drive, Pasadena, CA 91109 818/393-0516  FTS 977-0516      |
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