Other Gas Power System Applications Air enters the diffuser of a ramjet engine at 40 kPa, 240 K, with a velocity of 2500 km/h and decelerates to negligible velocity. On the basis of an air-standard analysis, the heat addition is 1080 kJ per kg of air passing through the engine. Air exits the nozzle at 40 kPa. Determine
(a) the pressure at the diffuser exit, in kPa.
(b) the velocity at the nozzle exit, in m/s.
Neglect kinetic energy except at the diffuser inlet and the nozzle exit.
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