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Wind-Tunnel Investigation of Ordinary and Split Flaps on Airfoils of Different Profile

Report presents the results of wind tunnel tests of the Clark Y, the NACA 23012 and the NACA 23021 airfoils equipped with full-span ordinary flaps and with full-span simple split flaps. The principal object of the tests was to determine the characteristics of the airfoils with ordinary flaps and in addition, to determine the relative merits of the various airfoils when equipped with either ordinary flaps or with simple split flaps. The Clark Y airfoil was tested with 3 widths of ordinary flap, … more

Date: October 25, 1935

Creator: Wenzinger, Carl J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Some Effects of Argon and Helium Upon Explosions of Carbon Monoxide and Oxygen

Report presents the results of an investigation conducted to study the effects of the inert gases, argon and helium, upon flame speed and expansion ratio in exploding mixtures of carbon monoxide, oxygen and water. For the particular gas mixtures investigated the results show that: (1) With the possible exception of helium in small amounts the addition of inert gas always produces decreased flame speed and expansion ratio; (2) like volumes of argon and helium have very different effects upon fla… more

Date: September 25, 1935

Creator: Fiock, Ernst F. & Roeder, Carl H.