Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!att!mtuxo!mtgzz!drutx!druco!sef
From: sef@druco.ATT.COM (Scott E. Farleigh)
Newsgroups: sci.space.shuttle
Subject: Re: The Double Boom
Message-ID: <4294@druco.ATT.COM>
Date: 26 May 89 14:25:49 GMT
References: <272@skipper.dfrf.nasa.gov> <9090001@hp-lsd.HP.COM> <16466@sequent.UUCP>
Organization: AT&T, Denver, CO
Lines: 15

In article <16466@sequent.UUCP>, jjb@sequent.UUCP (Jeff Berkowitz) writes:
> The double boom was distinct.  I suspect that the shuttle manifests the
> double boom at relatively long distances/high altitudes because it's
> travelling a WHOLE lot faster than F-4's (or anything else).
> -- 
> Jeff Berkowitz N6QOM			uunet!sequent!jjb
> Sequent Computer Systems		Custom Systems Group

It is "anything else", the double boom comes from the leading AND
trailing edges of the wing.  A wave is built up on both edges,
therefore the Ba-Boom (or if you're from Nebraska Ka-Boom).  As the
aircraft flies higher the pronounced double boom disappears into
one boom.

Scott E. Farleigh