Mailing List flyrotary@lancaironline.net Message #48059
From: Ernest Christley <echristley@nc.rr.com>
Subject: Re: [FlyRotary] Muffling
Date: Tue, 08 Sep 2009 10:08:21 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Lynn Hanover wrote:
The fish tail muffler has been in service for years on motorcycles and other machines.
 
Its poor service life behind a rotary is due to the shock wave dropping to subsonic by applying its energy to the flat sides of the design. It is both a rflective and an impinging design.
Reflective?  Impinging?

I think I know what you're referring to, but could you define the two terms more clearly?  Do all mufflers fall into these two categories?
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