Path: utzoo!attcan!uunet!lll-winken!ames!pasteur!ucbvax!CMR.ICST.NBS.GOV!roberts
From: roberts@CMR.ICST.NBS.GOV (John Roberts)
Newsgroups: sci.space
Subject: Supersonic aircraft and noise pollution
Message-ID: <8901240814.AA07708@cmr.icst.nbs.gov>
Date: 24 Jan 89 08:14:23 GMT
Sender: usenet@ucbvax.BERKELEY.EDU
Organization: National Institute of Standards and Technology
Lines: 10


Surely an SR-71 at surveillance altitude doesn't sound too loud from
the ground - that would spoil the surprise (:-)

Concordes regularly fly by here (~20-40 miles north of Washington, DC).
Though they are undoubtedly subsonic, they are by far the loudest planes
in the area. Fighter planes a few hundred feet up would probably be louder,
but we don't get many of them around here.
                                    John Roberts
                                    roberts@cmr.icst.nbs.gov