1929

From The Space Library

J. Jongbloed experimentally recognized the occurrence of a disease like the bends, or caisson disease, at pressures of less than 1 atmosphere.

U.S. Bureau of Standards developed the radio-echo altimeter.

NACA Annual Report indicated that aerodynamic efficiency may be increased by applying the principle of boundary-layer control to the wings and possibly other parts of an airplane.

• 1929
• January

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• 1930