Interaction of steady gasodynamic discontinuities and waves on supersonic gas jet flows from rocket engines

New analytical model of jet flow with Mach shock reflection is proposed. Gas flowfield is separated to several regions, and model problem of interaction between gasodynamic discontinuities and Prandtl-Meyer waves is solved in the each of them. Simple approximate analytical soutions are provided for the local model interaction problems. Generalization of those problems allows us to determine geometric and gasodynamic parameters of each element f shock-wave structure and flowfield at whole.