Surface radiators for water cooled engines

"Barnyard BOb --" wrote in message
...

I'd put forth the idea that the worst
case environment for an aircraft is always better than the worst case
for an automobile. Does anyone disagree on this point?

Yeah, I do. Many cars typically don't operate at 80% of rated power
for
long
periods.

Worst case environment for an automobile is sitting in stop and go
traffic
on hot sunny day for long periods of time.

Nope.
Popular misconception at best.

Most cars have absolutely no
trouble staying cool while screaming down the highway at full throttle.

Wrong again....
Most cars screaming down the highway get tickets or crash
long before they sustain 80% for long periods. Lots of variables,
but... speeds at 80% power could readily be exceeding 100 mph.


Barnyard BOb --


Right. The worst possible overheating, IMHO, is with a vehicle with an
automatic transmission, pulling a trailer up a grade that requires the
driver to keep WOT for an extended period of time. Add to that, a hot summer
day, running the AC.


You have engine load, additional transmission waste heat, lower road speed,
hot air, and even warmer air going across the radiator because of the AC
unit. Most any vehicle will overheat after an extended time, without
additional cooling, such as a transmission cooler.
--
Jim in NC