Ed;

 

I scanned the graph I have of the heat balance on the rotary.  Even after cropping it is about 2 MB. I attached a version scaled down to about 250 KB, but it bounced.  I’ll send this without the chart and then send a further reduced chart.  If it is not sufficiently legible I can send you the big version direct.

 

Way back when I applied this and didn’t fully understand what I was doing, I used the values where the arrows are; which I guess would be for quite a leaned condition.  Probably best to design cooling system based on something close to stochiemetric (1.0).

 

If the graph is unreadable; the breakdown of the energy of the fuel going in; for A/F ratio of 1.0, is:

 

39% - out the exhaust

27% - effective useable HP

15% - into the coolant

11% - unburned gases

6%  - into the oil

2%  - other

 

For the leaned condition; A/F ratio 1.15:

 

42% - out the exhaust

28% - effective useable HP

18% - into the coolant

5% - unburned gases

6%  - into the oil

1%  - other

 

Al

 

 

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson
Sent: Sunday, December 23, 2007 5:41 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Heat Distribution or 2 rotor???