Re: Concorde's other customers

Date:         09 Dec 97 03:54:26 
From:         ranck@joesbar.cc.vt.edu ()
Organization: Virginia Tech, Blacksburg, Virginia
References:   1 2 3
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tassio@watson.ibm.com wrote:
: Andrew Weir wrote:
: >Surely the main reason was very simple, and it is in the heart of why all civil
: >supersonic transports are fundamentally unsound (...)
: >Nobody will tolerate
: >sonic bangs overland. To the uninitiated, describing a sonic bang ("boom"
: >is a complete misnomer) is simple: it is the loudest noise you ever
: >heard in your life.

This is nonsense.  I've heard sonic booms from militry aircraft back
in the early/mid 1960's.  They used to fly over our house a cople
times a week it seems.  It sounds like medium loud thunder, though
genrally shorter duration.  I have heard louder thunder.  The boom from
supersonic aircraft did tend to rattle dishes and windows but it is
not "the loudest noise" I ever heard.  It was annoying though.

: JFK, goes up to is cruising level (60000ft?), and then crosses the sound
: barrier right above my head. How much noise will I perceive? If it is a
: heck of a lot, then you are right. If it is not, then the ban imposed by
: the US on supersonic flights over its own land was a political knee jerk
: to assure the Concorde was a failure.

I think the problem with overland supersonic flight is that everyone
along the flight path is going to get a boom.  The military restricted
suspersonic flight over land, probably because of the number of complaints.
Imagine how many complaints an airline would get on one NY to LA flight
with a window rattling boom following the plane the whole way across
the country.

--
Bill Ranck                +1-540-231-3951                    ranck@vt.edu
   Virginia Polytechnic Institute & State University, Computing Center