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Sphere drag at Mach numbers from 0·3 to 2·0 at Reynolds numbers approaching 107

Published online by Cambridge University Press:  18 April 2017

Donald G. Miller  and
Allan B. Bailey
Donald G. Miller
Affiliation:
Earth Sciences Division, Lawrence Livermore Laboratory, University of California, Livermore, California 94550
Allan B. Bailey
Affiliation:
Aerodynamics Projects Branch, Von Kármán Gas Dynamics Facility, Arnold Air Force Station, Tennessee 37389
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Extract

Our analysis of 18th and 19th century cannon firings shows that knowledge of sphere drag can be substantially extended into the region of 0·3 ≤ M∞ ≤ 2·0 and Re∞d up to 107. Bashforth’s chronographic measurements (1868) are of a quality comparable to modern measurements. The data of Mayevski (chronograph, 1868), Hutton (ballistic pendulum, 1787-1791), and Didion (ballistic pendulum, 1839-1840) are of lesser accuracy but in agreement with Bashforth’s. These cannon data are combined with modern data to provide the most extensive curves available of CD vs. Re∞d in this region. Interesting features of these curves for M∞ ≤ 1·0 are briefly described.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 93 , Issue 3 , August 1979 , pp. 449 - 464
Copyright
Copyright © Cambridge University Press 1979

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