Path: utzoo!attcan!uunet!lll-winken!ames!ncar!tank!mimsy!haven!purdue!decwrl!sgi!daisy!wooding From: wooding@daisy.UUCP (Mike Wooding) Newsgroups: sci.space Subject: Re: Supersonic aircraft and noise pollution Summary: sr71 too loud? Message-ID: <2556@daisy.UUCP> Date: 26 Jan 89 00:52:44 GMT References: <8901240814.AA07708@cmr.icst.nbs.gov> Organization: Daisy Systems, Mt. View, CA Lines: 10 In article <8901240814.AA07708@cmr.icst.nbs.gov>, roberts@CMR.ICST.NBS.GOV (John Roberts) writes: > > Surely an SR-71 at surveillance altitude doesn't sound too loud from > the ground - that would spoil the surprise (:-) Since it can and probably does fly at several times the speed of sound when spying, it probably doesn't matter how loud it is. It's been gone long time when it's heard on the ground. m wooding