In an aircraft gas turbine engine the hot gases enter the propelling nozzle at a pressure of 600 kPa and a temperature of 750 K with negligible velocity. Assuming the flow to be choked, find the exit temperature, pressure and velocity of the nozzle. Assume the properties of the hot gas to be c, = 1060 J/(kg K) and y = 1.37. [15 Marks] -) An ideal gas change follows the law PV = constant. The initial conditions are P, = 350 kPa, V, = 0.7 m and the final condition P2 = 510 kPa, What is the external work transfer? %3! %3D