Mailing List lml@lancaironline.net Message #24401
From: <Newlan2dl@aol.com>
Sender: Marvin Kaye <marv@lancaironline.net>
Subject: Re: [LML] Re: Legacy Noise Reduction System
Date: Fri, 09 Jul 2004 03:13:31 -0400
To: <lml@lancaironline.net>
Hi John
 
Yes, I am putting together a kit for the Legacy.  Actually, it will be more like three kits depending on whether you want the lightest aircraft possible (good thermal but only a little acoustic attenuation on the high frequency end), medium weight (good thermal and medium attenuation) or maximum thermal and acoustic.  We were able to pull about 8 dB out of Dave's plane (in climb out, cruise was about 6.5-7 dB).  Since the dB scale is logarithmic, that's actually a lot of noise.  We added about 25 lbs as I remember to get that.  More would be possible with some additional weight.
 
The kit will include absorbers for the walls, felt/barriers for the floor and nose wheel well and a 3 part isolation/barrier/absorber firewall blanket for the inside.  Also there will be gaskets for noise leaks sealing, film, tape, etc.
 
I am pretty much up to my ass until after OSH at this point but I am trying to get the kit assembled by then or slightly after.
 
Dan Newland
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