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Date: Fri, 20 Apr 2007 08:05:21 -0400
From: Ernest Christley <echristley@nc.rr.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Single Rotor Testing
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Richard Sohn wrote:

> Tested my single rotor today. The first time with some real, 
> reproduceable data.
> The configuration is with one compound side housing. The other side 
> housing is still sandwiched, using milled down MAZDA housing section.
> This version weight for the nacked engine, flywheel and water pump 
> included, is 90lb. This engine is based on 12A rotor and rotor 
> housing. Intake is P-P.
>  
> Data:
>  
> RPM    4000
> Fuel flow  2.5GPH
> MAP        21"
> EGT       1400F
> O2         .650  =  15 (ratio)
>  
> At shut down:
> oil temp        200F
> Water temp  200F  
> oil pressure was 50psi cold and hot, looks suspect.
> The water pressure gauge did not work, which was the reason for 
> shutting down after 7min runtime. I had planed to go to max water 
> temperature, did not want to do that without water pressure.
>  
> The most interesting fact of this test is the possibility of a power 
> estimate. Calculated power using a BSFC of .5 is 30 hp. Looking at the 
> power curve of the LeMans engine, this is about 10% below of what is 
> shown there. From this, I believe the projected over 100hp at 7500RPM 
> is within reach.
>  
> Richard Sohn
> N2071U

You will be able to get 1HP/lb after you add a gearbox, right?

-- 
         ,|"|"|,              Ernest Christley       |
----===<{{(oQo)}}>===----    Dyke Delta Builder      |
        o|  d  |o        http://ernest.isa-geek.org  |