At 11:01 PM -0400 8/27/05, acekraut11@aol.com wrote:
>Randall's explanation makes sense. For me a simplier answer would
>be that with the fan in front of the radiator there is a restriction
>of air flow, even if the fan blade is spinning. Behind the radiator
>the air restriction occurs after the air has passed over the fins
>and has had the designed cooling effect.
It just struck me that one on the big issues in general aviation
engine cooling design is the airflow aft of the engine. Some
colleagues of mine (all aero engineering professors) spent months
trying to improve the air intake to keep an experimental engine temps
within limits. In the end, all it took was a tweak of the exhaust
side of the system. A little better aero that created the
appropriate low pressure to suck on the back side & the problem was
solved.
I would surmise that total flow would be impacted by both sides of
the radiator.
John
--
John A. Wise, Ph.D., CPE
Glendale, AZ
JohnWise@alumni.pitt.edu
1960 TR3A TS80422L
http://home.earthlink.net/~johnwise/TR3A.html
|