1928

From The Space Library

NACA developed cowling for radial air-cooled engines which increased speed of Curtiss AT-5A airplane from 118 to 137 mph with no Increase in engine horsepower, Fred B. Weick and associates contributing to this development.

NACA's Langley Memorial Aeronautical Laboratory demonstrated high lift by boundary-layer control by means of pressure or suction slots in an airfoil in the atmospheric wind tunnel.

First refrigerated wind tunnel for research on prevention of icing of wings and propellers placed in operation at Langley Laboratory.

First of nine volumes of an encyclopedia on Interplanetary travel by Prof. Nikolai A. Rynin published in the Soviet Union, the final volume of which appeared in 1932.

• 1928
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• 1929