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Question:
Why is an air-cooled engine not used in an airplane?



Replies:
There are some air cooled engines used in airplanes, Porsche's 911 engine has been used and is air-cooled. There is a Horsepower limit for an air cooled engine, so if you need to produce more Hp or have a bigger plane which needs more Hp then you need to switch to a water cooled design. The new Porsche 911 is a water cooled design because the Hp limit for a an air-cooled 3.6 liter engine was maxed out.

M. Baldwin



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