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???
Some place in a place far away and
a long time ago, I had a reference to the heat distribution of the 13B engine
- 2/3 of the waste heat being rejected by coolant/radiator and 1/3 by the oil
system. However, I appear to have lost that reference, anybody on the
list have any source or reference??