Answer to Question #230097 in Molecular Physics | Thermodynamics for Unknown346307

Question

9. During flight, the air speed of a turbojet engine is 250 m/s. Ambient air

temperature is – 14°C. Gas temperature at outlet of nozzle is 610°C. Corresponding enthalpy

values for air and gas are respectively 250 and 900 kJ/kg. Fuel air ratio is 0.0180. Chemical

energy of fuel is 45 MJ/kg. Owing to incomplete combustion 6% of chemical energy is not released

in the reaction. Heat loss from the engine is 21 kJ/kg of air.

Calculate the velocity of the exhaust jet.

Answer 1

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