This report describes an IBM FORTSON pr. ram for calculating infrasonic flows through curved channels. Included in the program are: 1) a second order bel tserkovskii procedure for calculating the flow field around the forward part of blunt blades, 2) a general method of characteristics procedure for calculating supersonic flow fields,3) automatic procedures for calculating Interactions of shocks of opposite families, shock interactions with a wall and with a vortex sheet or slipstream,4) a finite difference' laminar boundary-layer procedure for calculating viscous region of the flow. Three sample calculations as well as the listing of the FORTRAN program are presented.
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