Award No. 3

Last month the Harmon Trophy went to Wiley Post and the Daniel Guggenheim Gold Medal to William Edward Boeing. Last week the Collier Trophy-- third in the trinity of aviation's outstanding awards--went to Frank Walker Caldwell for the "greatest achievement in aviation in America" during the past year. His achievement: the "controllable-pitch" propeller, which enables high-speed planes to take off quickly, climb rapidly, fly efficiently at high altitudes. Presentation of the trophy is made annually by the President of the U. S. Graduate of the University of Virginia and Massachusetts Institute of Technology (where he built a glider and wrote a thesis on propellers), Frank Caldwell put his education to practical use by becoming chief of the propeller division of Curtiss Airplane Co., then Chief of the U. S. Army Propeller Service for ten years. Since 1928 he has been associated with Hamilton Standard Propeller Co., subsidiary of United Aircraft & Transport Corp. Started in 1911 by the late Robert Joseph Collier, son of the founder of Collier's Weekly, the Collier Trophy was awarded the first year to Glenn H. Curtiss, the second year to Orville Wright. Since then it has been won, among others, by the U. S. Air Mail Service (twice), the U. S. Army Air Service, Elmer A. Sperry (twice), the National Advisory Committee for Aeronautics (see p. 41). Last year's winner: Glenn Luther Martin.

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