ME326_HW12_30NOV2011

# ME326_HW12_30NOV2011 - ME 326-Homework Assignment #12 Due:...

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ME 326-Homework Assignment #12 Due: 30 November 2011 Topic: Propulsion Brayton Cycle Text: Chapter 4.3.1, 9.6.5 Problem #1: Air enters an isentropic diffuser with a speed of 250 m/s and at a temperature of 0 °C and pressure of 70 kPa. The air exits the diffuser with negligible velocity. Modeling air as an Ideal Gas with variable specific heat determine: a) the enthalpy at the exit of the diffuser (kJ/kg), b) the temperature at the exit of the diffuser (°C), c) the pressure at the exit of the diffuser (kPa). Problem #2: Air enters an isentropic nozzle at 800 °C and pressure of 200 kPa and has negligible velocity. The air exits the nozzle at 70 kPa. Modeling air as an Idea Gas with variable specific heat determine: a) the enthalpy at the exit of the nozzle (kJ/kg), b) the temperature at the exit of the nozzle (°C), c) the velocity at the exit of the nozzle (m/s). Problem #3: The General Electric F110 turbojet engine powers military aircraft such as F-16. According to published data*, this engine has an air mass flow rate of

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## This note was uploaded on 12/14/2011 for the course ME 326 taught by Professor Schmidt during the Fall '07 term at University of Texas at Austin.

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ME326_HW12_30NOV2011 - ME 326-Homework Assignment #12 Due:...

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