Bill Schertz wrote:

Everyone,
I discovered an error in my calculations that I presented at the Rotary
Roundup on Saturday. I have enclosed the revised graphs and sample
calculation as a PDF file that everyone should be able to open.

Thanks to those that questioned my numbers -- the methodology was correct,
but my data entry wasn't so good.

please use the attached figures in liu of the ones in the handout.

Bill Schertz
KIS Cruiser # 4045

Bill will be sending us a complete PDF of his entire  excellent talk shortly I
suspect.
It is a unified cooling theory useful for predicting the specifications of a
complete
water side rotary engine cooling system.

Paul Lamar

Paul, how do you stuff 30,000 cubic feet of air in one minute through a 260
sq inches radiator? Seems a lot?
Bulent

You don't operate at that delta T. You operate at a much higher delta T.
Bill is still working on that part of the analysis. This last chart is a little 
misleading. In the final analysis the air required will probably be much higher 
than this but so too will be the delta T between the rad metal and the cooling
air coming in from the scoop.

An airplane flies at at least 200 FPS so if it is one square foot air intake
that is 200 times 60 or 12,000 cubic feet per minute at 200 HP. That is an air delta T of
only 30 degrees F.

Paul Lamar
 
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