Biographical Memoirs Volume 86 (2005) / Chapter Skim
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William Rees Sears
William Rees Sears
Pages 298-311
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Astronautics and Aeronautics of Institute American the of Courtesy
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Bill's thesis on the theory of oscillating airfoils in an ideal flow, submitted in 1938, turned out to be a classic that summarized and enriched substantially all previous efforts in this important field. In 1940 Bill went on to publish a paper, based on the results of the von Karman-Sears theory, that pioneered the application of operational methods for the solution of problems arising when an impulsive change occurs in the velocity and the shape of an airfoil (1940)
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In 1941, with the entry of the United States into World War 11 becoming more evident, Sears accepted the offer of Jack Northrop (a friend of von Karman) to became chief of aerodynamics and flight testing for the Northrop Aircraft Corporation.
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A new era in Bill's life started when in 1946 he became the director of the newly created Graduate School of Aeronautical Engineering of Cornell University in Ithaca, New York. Because of his experiences at Caltech and in the industries of Southern California, he was able to assemble a faculty for this school that jump-started its national and international fame.
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From the consideration of single airfoils he proceeded to the theory of airfoils in grid configurations, proceeding further from simple configurations to arrangements that are directly applicable to rotating machinery. Complicated phenomena like the rotating stall in axial compressors became thesis problems at the zero school, which maintained its top position in the aeronautical sciences.
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The theme of Bill's lectures and of his writings showed a growing interest in the fundamental problems of airfoils in real fluids, where the Kutta condition provides the critical link between the ideal and the real fluid. Bill's paper, "Some Recent Developments in Airfoil Theory," which summarized the state of the art, appeared in a special issue of his journal in 1956, in honor of von Karman's seventy-fifth birthday.
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Kemp (1927-1986) , for the Cornell University Press.
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R Sears after 1973 were published by the Cornell University Press in 1997.
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On April 24, 2004, the Sears family reunion was repeated on the occasion of the Sears Distinguished Lecture at Cornell. On April 26 Mabel Sears died peacefully in her sleep at the age of 91, back in Ithaca, New York.
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Further honors included the Von Karman Medal of the Advisory Group for Aeronautical Research and Development (AGARD) in 1977, the Prandtl Ring in 1974, and the Daniel Guggenheim Medal in 1996.
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R Sears, published by the Cornell University Press in two volumes, which appeared in 1973 and in 1996.
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23:2-7. 1957 On the stability of small gas bubbles moving uniformly in various liquids.
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Quebec: Laval University Press. 1973 The far-field sound of rigid bodies ill arbitrary motion (DissertatiO~I of F
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