Awarded

The Daniel Guggenheim gold medal for notable aeronautical achievement: to Dr. Ludwig Prandtl of the University of Goettingen, Germany. He was largely instrumental in the development of the Goettingen series of wing sections, notably in the perfection of the thick wing now successfully used on many transport planes; compiled vast statistical information on aerodynamic experiments, won the Great Gold Medal of the Royal Aeronautical Society of England in 1927, the Grashof Medal of the Verein Deutscher Ingenieure in 1929.

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