A turbofan operates at 25,000 ft and moves at 815 ft/s. It ingests 1.2 times the amount of air into the fan than into the core, which all exits through the fan exhaust. The fuel-flow-to-core airflow ratio is 0.0255. The exit densities of the fan and core are 0.00154 and 0.000578 slugs/ft3, respe~tively. The exit pressures from the fan and core are 10.07 and 10.26 psia, respectively. The developed thrust is 10,580 !bf, and the exhaust velocities from the fan and core are 1147 and 1852 ft/s, respectively. (a) Find the ingested air mass flow rate for the core and TSFC. (b) What are the exit areas of the fan and core nozzles
Answers: 3
= 60.94 Kg/s
= 73.12 kg/s
= 0.3624 
= 0.2635 
= 815 ft/s = 248.41 m/s
= 0.0255
= 0.000578 slugs/
= 0.2979 kg/
= 0.00154 slugs/
= 0.7937 kg/
= 10.07 Psi = 69430.21 Pa
= 10.26 Psi = 70740.2 Pa
= 1147 ft/s = 349.6 m/s
= 1852 ft/s = 564.5 m/s
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A turbofan operates at 25,000 ft and moves at 815 ft/s. It ingests 1.2 times the amount of air into...
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