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Article #608

Re: "silent" helicopters

#608
From: prichard
Date: Mon, 14 Dec 1992 12:31
33 lines
2058 bytes
 cm9@prism.gatech.EDU (MCKEITHAN,CLIFFORD M.) writes:

   Devon, (aka Senior Gofer)

   The noise problem can be solved by not building noisy
   helicopters and instead building tiltrotors, right?

   Cliff McKeithan

hey, Cliff!  thats the plan.  tiltrotors have their own acoustic
peculiarities, for which my paycheck is grateful.  the bottom line is,
as usual, capital.  not only for our end (i.e. prediction method 
development, model and full-scale testing, etc.) but also to create
the market for the production vehicles.  we're now in a wobbly state;
we have existing noisy helicopters in service, and an increasing
understanding on noise reduction, but no impending design projects on
which to apply it.

Slick Willie sez he's for infrastructure spending, so let's hope
that includes rotorcraft and short-haul.  our problem is we're not
glamorous enough.  we don't have snappy acronyms and "space-camps"
and all that.  and since Congress has Nat'l Airport in their front
yard they probably don't appreciate the air transport bottlenecks
which are developing.

--
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 | Devon Prichard                       I haven't lost my mind;         |
 | Senior Gofer                         its backed up on tape somewhere.|
 | Lockheed Engineering & Sciences Co.                                  |
 | prichard@devon.larc.nasa.gov                                         |
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Message-ID: <PRICHARD.92Dec14123124@devon.larc.nasa.gov>
Path: arc1-ca.pugleaf.net!sparky!uunet!news.larc.nasa.gov!devon.larc.nasa.gov!prichard
References: <PRICHARD.92Dec7092629@devon.larc.nasa.gov> <78131@hydra.gatech.EDU>

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Path: arc1-ca.pugleaf.net!sparky!uunet!news.larc.nasa.gov!devon.larc.nasa.gov!prichard
From: prichard@devon.larc.nasa.gov
Newsgroups: sci.aeronautics
Subject: Re: "silent" helicopters
Date: 14 Dec 92 12:31:24
Organization: Lockheed Engineering & Sciences Co.
Lines: 33
Message-ID: <PRICHARD.92Dec14123124@devon.larc.nasa.gov>
References: <PRICHARD.92Dec7092629@devon.larc.nasa.gov> <78131@hydra.gatech.EDU>
NNTP-Posting-Host: devon.larc.nasa.gov
In-reply-to: cm9@prism.gatech.EDU's message of 11 Dec 92 20:27:14 GMT