Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!nrl-cmf!ames!pasteur!ucbvax!hplabs!hplabsb!dsmith
From: dsmith@hplabsb.UUCP (David Smith)
Newsgroups: sci.space.shuttle
Subject: Re: Shuttle landing
Message-ID: <4937@hplabsb.UUCP>
Date: 6 Oct 88 18:12:47 GMT
References: <69@sjs.sj.ate.slb.com>
Organization: Hewlett-Packard Laboratories
Lines: 12

In article <69@sjs.sj.ate.slb.com>, doyle@sjs.sj.ate.slb.com (Matt Doyle, 408-437-5284) writes:
> why were there two sonic booms when the STS passed over head when landing
> and not one?? I heard the news casters telling people to prepare for the
> double sonic boom, so I assume that it is normal.

It's normal for supersonic aircraft.  There's a bow shock and a tail
shock.
-- 

			David Smith
			HP Labs
			dsmith@hplabs.hp.com