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  3. an ideal turbofan operates at 11,000m with a free-

An ideal turbofan operates at 11,000m with a free-stream Mach number of 0.85. Considering the following...

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Mechanical Engineering

An ideal turbofan operates at 11,000m with a free-stream Machnumber of 0.85. Considering the following design inputs:

Bypass ratio:?= 8

Fan pressure ratio:?F= 1.6

Compressor pressure ratio:?c= 25

Fuel heating energy:hPR= 43,500kJ/kg

Total temperature downstream of the combustor:Tt4= 1420K

a)Calculate all the points and plot the thermodynamic cycle ofthe core flow on a T-sdiagram.

b)Calculate specific thrust, specific fuel consumption, thermalefficiency, propulsive efficiency and overall efficiency.

c)Compare the performance parameters in part b)with those of anideal turbojet with the same ?c, Tt4 and hPR.

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