*Max A. Heaslet, Harvard Lomax*

*naca-tn-1515*

*Jan 1948*

A direct analogy is established between the use of source-sink and doublet distributions in the solution of arbitrary boundary value problems in subsonic wing theory and the corresponding problems in supersonic theory. The concept of the (finite part) of an integral is introduced and used in the calculation of the improper integrals associated with supersonic doublet distributions.

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http://naca.central.cranfield.ac.uk/reports/1948/naca-tn-1515.pdf