Mailing List flyrotary@lancaironline.net Message #37576
From: david mccandless <daval@iprimus.com.au>
Subject: Re: [FlyRotary] Re: PP Ve??? was Re: Intake CFM air flow
Date: Sat, 2 Jun 2007 08:19:10 +0800
To: Rotary motors in aircraft <flyrotary@lancaironline.net>

On 2, Jun , at 6:22 AM, Lehanover@aol.com wrote:

The advantage of the Pport is it's near lack of reversions. In the side port, the flat side of the rotor keeps showing up in the port entrance. In the Pport only the pointy end of the rotor crossing the port, and the lower half of that is connected to the low pressure from the open exhaust port and header.
 
Lynn E. Hanover

Hi Lynn,
since the Pport has a 'near lack of reversions' which are the source of "organ pipe" tuning theory; would you say that Pport engine is a lot less sensitive to "tuned length" than a side port engine?

Or does the Pport overlap between exhaust and inlet also cause a pulsation which enhances 'organ pipe' tuned length.

I think this is what I wanted to ask :)

BR, Dave McC
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