Air flows into a subsonic aircraft inlet with a velocity of 206 m/s. The static temperature and pressure of the air at the inflow section are 227 K and 22.4 kPa respectively. The inflow area is 0.56 m2 . The outflow air has static temperature and pressure of 241 K and 26.4 kPa respectively, and its velocity is 118 m/s. Assuming steady quasi-1D flow across the inlet and exit sections, calculate: (a) the mass flow rate of air through the inlet; (b) the outflow area; (c) the inflow and outflow Mach numbers (d) the specific entropy increase [J/kg-K] of the air for the stated conditions. Hint: We are not making an isentropic assumption in this problem, but calculating (s2-s1) based on exit and inlet conditions. 2. Air enters a compressor at a pressure of 74.7 kPa and 287 K and leaves at 622 kPa and 579 K. The air flow rate is 50 kg/s. Calculate the shaft power input required to drive the compressor. Hint: The shaft power that goes into the compressor increases the total enthalpy of the air from the inlet to the exit, since there is no heat into the system.