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هوافضا::
موتور هواخنک
For the aircooled engine (t" " 450° F), with corresponding
40,0 feet the incompressible pressure drop is 1.45 times that at sea level for the high-temperature aircooled engine, about 0.3 times that at sea level for the low-temperature oil cooler, and slightly less than that at sea level for the intermediate-temperature ethyleneglycol radiator
Analysis of fans for aircooled engine installations designed for high-altitude flight shows that fan speeds of about 1.5 times the engine speed are needed for effective and efficient installations.
The question of whether the liquid-cooled or aircooled engine is the Letter for use in airplanes has always teen a lively subject for discussion.
'.ned 'from this illustration is not the difference between li qui d-c ooled and aircooled engines but the more important fact that each requires only a very small power for cooling and each requires pressure drops which are easily developed.
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