Critical angle of regular interaction upon collision of two unidentical strong skew shock waves in a gas with a constant polytropic index

In the present work on the basis of relationships of the hydrodynamic theory of shock waves, the author determines a critical angle of existence of a regular collision regime (RCR) for two unidentical plane skew shock waves (SSW) in a gas, the change in the polytropic index of which behind the shock wave front can be neglected.