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If it works, then it would be nice to get
max coolant flow
when you need it most (High power takeoff with low air flow
through
radiators) and then save HP at lean cruise by lowering the flow rate
and
associated losses.
Just a thought; but it
seems to me there may be some concern about temp distribution within the engine
if you control the cooling capacity by varying the flow rate. This is a
pretty critical issue in rotaries, and one reason why Mazda uses the bypass
thermostat approach; i.e. full flow through the engine at all times whether
thermostat is open or closed.
Flying at altitude and low air temp may take little flow
rate to cool relatively high power, but the temp drop from one side of the loop
to the other could be large; and the internal temps in certain spots ( like
around the plugs) could be boiling.
Al Gietzen
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