A turbojet aircraft is flying with a velocity of 220 m/s at an altitude where th

Question

A turbojet aircraft is flying with a velocity of 220 m/s at an altitude where the air is 26 KPa and -43 C. Air enters the compressor at a rate of 25 kg/s. The compressor pressure ratio is 11. The turbine inlet temperature is 1400 K. The compressor and turbine have isentropic efficiencies of 85% and 90% respectively. The diffuser and nozzle processes are isentropic. Pressure drop for flow in the combustor is negligible. Kinetic energy is negligible everywhere except at the diffuser inlet and the nozzle exit. Utilizing the air. standard assumptions. Cp= constant, Determine: (a) the pressures and temperatures at each state; (b) the rate of heat addition to the air passing through the combustor; (c) the velocity at the nozzle exit.

Explanation / Answer

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http://www.chegg.com/homework-help/questions-and-answers/turbojet-aircraft-flying-velocity-220-m-s-altitude-air-26-kpa-43-c-air-enters-compressor-r-q5436474

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