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Date: Tue, 8 Mar 2005 15:58:51 -0800 (PST)
From: Tom <tomtugan@yahoo.com>
Subject: Re: [FlyRotary] Anechoic Muffler
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: 6667
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Just to stir things up...     It seems that with exhaust systems, the exhaust consists of two parts which should be handled differently.    Part 1 is the exhaust gas flow which we want to flow out with little restriction.   Part 2 is the exhaust pulse which we try to attenuate, breakup, etc.     These two are like the difference between wind and sound-waves.      In the past 24 hours or so, I've been wondering about using anechoic chamber principles to attenuate the pulse.      I have a specific layout in mind which should tend to attenuate the pulses while not interfering with exhaust gas flow.     Anybody hear of such a thing?

Tom (looking for project sponsors or a job)


		
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Celebrate Yahoo!'s 10th Birthday! 
 Yahoo! Netrospective: 100 Moments of the Web 
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<BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">
<P>Just to stir things up...&nbsp;&nbsp;&nbsp;&nbsp; It seems that with exhaust systems, the exhaust consists of two parts which should be handled differently.&nbsp;&nbsp;&nbsp; Part 1 is the exhaust gas flow which we want to flow out with little restriction. &nbsp;&nbsp;Part 2&nbsp;is the exhaust pulse which we try to attenuate, breakup, etc.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;These two are like the difference between wind and sound-waves.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In the past&nbsp;24 hours or so,&nbsp;I've been wondering about using anechoic chamber principles to attenuate the pulse.&nbsp;&nbsp;&nbsp; &nbsp; I have a specific layout in mind which should tend to&nbsp;attenuate the pulses while not interfering with exhaust gas flow.&nbsp;&nbsp;&nbsp;&nbsp; Anybody hear of such a thing?</P>
<P>Tom (looking for project sponsors or a job)</P></BLOCKQUOTE></DIV><p>
		<hr size=1>Celebrate Yahoo!'s 10th Birthday! <br> 
<a href="http://birthday.yahoo.com/netrospective/">Yahoo! Netrospective: 100 Moments of the Web</a> 
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