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Note on the Evaluation of the Integral ![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20160810071235958-0035:S0368393100099855_inline01.gif?pub-status=live)
Published online by Cambridge University Press: 28 July 2016
Extract
The Integral I occurs frequently in aerodynamics. To cite a particular case, Ward has shown that if S(x) is the cross-sectional area distribution of a slender body its wave drag D is given to a first approxition by D = qI/(2π), where q is the kinetic pressure. In this case, S(x) is often defined numerically, and the direct evaluation of I is then complicated by the presence of the logarithmic singularity. Several methods may be employed to avoid this complication. Legendre has recently suggested rewriting I in a non-singular form, which unfortunately is not well suited to numerical work. Here, a method for the evaluation of the unmodified integral is presented.
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- Copyright © Royal Aeronautical Society 1954
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