*Maxwell Alfred Heaslet, Harvard Lomax*

*naca-tn-1767*

*Apr 1949*

Following the introduction of the linearized partial differential equation for nonsteady three-dimensional compressible flow, general methods of solution are given for the two- and three-dimensional steady-state and two-dimensional unsteady-state equations. It is also pointed out that, in the absence of thickness effects linear theory yields solutions consistent with the assumptions made when applied to lifting-surface problems for swept-back plan forms at sonic speeds.

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http://naca.central.cranfield.ac.uk/reports/1949/naca-tn-1767.pdf