Explanation Given: The speed of the jet engine on plane ( V ) is 160 m / s . Diameter at the inlet of air ( d ) is 0.5 m . Mass of the fuel ( m f ) is 2 kg / s . Velocity of the exhaust at the exit of nozzle ( V e ) is 600 m / s . Calculations: Refer to the Appendix A, and obtain the density of air ( ρ a ) as 1.23 kg / m 3 at standard pressure and temperature. Determine the cross sectional area ( A ) for the inlet of air. A = π 4 d 2 A = π 4 ( 0.5 m ) 2 = 0.19635 m 2 Calculate the mass flowrate of air flowing into the jet engine ( m ˙ a ) . m ˙ a = ρ a V A m ˙ a = 1

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ISBN: 2819480256061

Author: HIBBELER

Publisher: INTER PEAR

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Chapter 6, Problem 78P

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The amount of thrust power developed by the engine.

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Chapter 6, Problem 77P

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