dustind
Well-Known Member
Why don't people with liquid cooled engines and wet metal wings use the fuel in the wings to cool the engine? I imagine it would really cut down on cowl cooling drag, and allow more ground running. I got the idea from http://www.deltahawkengines.com/ FAQ section. They said you would only need 4-5 gallons of fuel in the tanks to cool a diesel engine. If you had less fuel, you would fly at a low power setting to conserve fuel, and thus produce less heat. They also recommended using water for the transfer fluid with heat exchangers in the wing tanks.
