From: Epijk@aol.com
Message-ID: <150.6c64973.2968d57a@aol.com>
Date: Sat, 5 Jan 2002 17:17:30 EST
Subject: Re: Comment on inquiries for G Braly, SHORT.
To: lancair.list@olsusa.com
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
Reply-To: lancair.list@olsusa.com

          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
          <<  Lancair Builders' Mail List  >>
          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> 
>>
In a message dated 1/5/2002 1:48:34 PM Pacific Standard Time, 
gwbraly@gami.com writes:

<<<...You need several things to get these engines to operate smoothly, most 
importantly:

    1) Uniform AIR distribution across a reasonable range of RPMs;
    2) Uniform FUEL distribution;
    3) Reliable-uniform ignition without cross firing, etc...
    4) Balanced rotating components.
    5) Sufficient total fuel/air charge of sufficiently uniform distribution 
so that the natural statistical variation in burn times is minimized....>>>

BUT even when you achieve ALL of the above, by virtue of the fact that the 
ignition AND combustion processes are non-deterministic, a population of peak 
pressure values, collected in continuous real time on A SINGLE CYLINDER, will 
have a skewed statistical distribution (don't remember the type; see writings 
of Paul Puzinauskas). ie, not the same from cycle to cycle even in the same 
cylinder.

Jack Kane 


>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
LML website:   http://members.olsusa.com/mkaye/maillist.html
LML Builders' Bookstore:   http://www.buildersbooks.com/lancair
Please remember that purchases from the Builders' Bookstore
assist with the management of the LML.

Please send your photos and drawings to marvkaye@olsusa.com.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>