This paper describes a method for solving the equation for inviscid, irrotational, compressible, potential flow about a propeller. The equation is written in a non-inertial system of coordinates rotating with the propeller in which the problem becomes a steady one. The solution is constructed by superimposing a solution to the compressible equation on an 'incompressible' or 'wake' solution. A 'modal' or 'shape' function method provides a procedure for solving the integral equation resulting from application of the final boundary condition to the superposed solution. Results are presented for an increasing number of control points and modal functions. A comparison of compressible and incompressible circulation distributions is also included. (Author abstract. )