Determine the fuel (in kg) consumed during a 30 minute flight. Assume that changes in air mass flow

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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68 m3/s of air enters a combustion chamber of a jet
engine at a velocity of 418 m/s at -59 °C and 31 kPa.
The air leaves the chamber at 944 m/s at 187 °C.
Determine the fuel (in kg) consumed during a 30
minute flight. Assume that changes in air mass flow
rate through the chamber are not significant and
Ah = CPAT. Take the air gas constant to be 0.287
kPa.m3/kg.K, the specific heat of air to be 1 kJ/(kgK)
and the heating value of the fuel to be 42,024 kJ/kg.
Give your answer to the nearest kg.
Transcribed Image Text:68 m3/s of air enters a combustion chamber of a jet engine at a velocity of 418 m/s at -59 °C and 31 kPa. The air leaves the chamber at 944 m/s at 187 °C. Determine the fuel (in kg) consumed during a 30 minute flight. Assume that changes in air mass flow rate through the chamber are not significant and Ah = CPAT. Take the air gas constant to be 0.287 kPa.m3/kg.K, the specific heat of air to be 1 kJ/(kgK) and the heating value of the fuel to be 42,024 kJ/kg. Give your answer to the nearest kg.
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