Full scale investigation of the drag of a wing radiator

Fred E. Weick
naca-tn-318
Sep 1929


Tests were made on the 1927 Williams racer in order to determine the effect of the wing radiator on the airfoil characteristics. It was found that the radiator doubled the minimum drag of the portion of the wing it covered, and also reduced the lift somewhat.

An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1929/naca-tn-318.pdf