 The final static properties are a function of the final flow Mach number (formula_24) and can be related to the initial flow conditions as follows,

The Mach number after the turn (formula_24) is related to the initial Mach number (formula_27) and the turn angle (formula_28) by,

where, formula_30 is the Prandtl–Meyer function.This function determines the angle through which a sonic flow (M = 1) must turn to reach a particular Mach number (M).Mathematically,

By convention, formula_32

Thus, given the initial Mach number (formula_33), one can calculate formula_34 and using the turn angle find formula_35.