4-2. A two-steps design method

Rheograph: replacement of hyperbolic pattern by an elliptic continuation segment

Rheograph: Using initial data for Meth of Char (MOC) to find hyperbolic pattern

Physical plane: solving a b.v. problem obtaining an all-subsonic flow with a Fict Gas - modif. solver

Physical plane: Using Rheograph-based MOC to find compatible supersonic pattern