The effect of increased cooling surface on performance of aircraft-engine cylinders as shown by tests of the NACA cylinder

Schey, Oscar W Rollin, Verne G Ellerbrock, Herman H , Jr
naca-report-779
1944


A method of constructing fins of nearly optimum proportions has been developed by the NACA to the point where a cylinder has been manufactured and tested. Data were obtained on cylinder temperature for a wide range of inlet-manifold pressures, engine speeds, and cooling-pressure differences.

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http://naca.central.cranfield.ac.uk/reports/1944/naca-report-779.pdf