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Date: Thu, 05 Jun 2008 17:25:05 -0400
From: Ernest Christley <echristley@nc.rr.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Rotor face temps
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Kelly Troyer wrote:
>   Lynn,
>      A simple drawing would help my old brain visualize what the rotor
> would look like for a 4 rotor engine on a 2 lobe excentric shaft.......I
> presume the rotors would be geared differently to the stationary gears
> to maintain the various cycles........
>
>   
Think of a rotor and housing that is twice as fat.  Everything else is 
the same. (exept for the shaft that has to expand in one spot to accept 
the fat rotor).

Lynn,
On the idea of using one rotor as a boost for the others.  Wouldn't it 
have to either be larger, or be geared to run faster?  If you wanted to 
run 5lbs of boost, for instance, that is a 1/3rd increase in air 
pressure from ambient.  You couldn't just run the exhaust from the front 
rotor into the rear, because the two are pumping the same volume.  You'd 
the the front rotor to be 1/3rd wider so that it would displace that 
much more air.

Ok.  Maybe I'm the one hearing voices from the shop.