To simplify things, assume that the process gas is air throughout and that it has constant specific heats. The mass flux through the engine can be determined by assuming that the engine is "swallowing" the air that hits the engine inlet as it moves through the air. The jet is moving at a velocity of 280 m/s (1008 km/hr) and has an inlet diameter of 60 cm. The jet moves through air at 1 atm of pressure and a temperature of 300 K. What is the max flux of air moving through the engine? The diffuser in a jet engine is designed to decrease the kinetic energy of the air entering the engine compressor without any work or heat interactions by increasing the area of the flow (this is poorly shown in Fig. 1 which seems to show a contraction nozzle before the compressor stage). The diffuser decreases the velocity of the flow by a factor of 5 while increasing the pressure by a factor of 1.5. Calculate the change in the specific enthalpy of the flow, and the temperature and density at State 2. What was the necessary area change of the diffuser?