Air at $50 \mathrm{kPa}$ pressure and $400 \mathrm{~K}$ temperature flows in a duct at Mach $3.0 .$ A part of the flow leaks through an opening on the duct wall into the ambient, where the pressure is $30 \mathrm{kPa}$. The maximum Mach number achieved in the discharge is________________(accurate to two decimal places). (Ratio of specific heats of air is $\gamma=1.4$ ).
Air at $50 \mathrm{kPa}$ pressure and $400 \mathrm{~K}$ temperature flows in a duct at Mach $3.0 .$ A part of the flow leaks through an opening on the duct wall into the ambient, where the pressure is $30 \mathrm{kPa}$. The maximum Mach number achieved in the discharge is________________(accurate to two decimal places). (Ratio of specific heats of air is $\gamma=1.4$ ).