Air enters the diffuser of a turbojet engine at 18 kPa, 216 K,
with a volumetric flow rate of 230 m3/s and a velocity
of 265 m/s. The compressor pressure ratio is 15, and its isentropic
efficiency is 87%. Air enters the turbine at 1560 K and the same
pressure as at the exit of the compressor. The turbine isentropic
efficiency is 89%, and the nozzle isentropic efficiency is 97%. The
pressure at the nozzle exit is 18 kPa. Use...