Aerospace Engineering > GATE 2010 > Engine Performance
An aircraft with an IDEAL Turbojet engine is flying at 200 m/s at an altitude where the ambient pressure is equal to 0.8 bar. The stagnation pressure and temperature at the inlet of the turbine are 6 bar and 1400 K respectively. The change in specific enthalpy across the compressor is 335 kJ/kg. Assume the fuel flow rate to be very small in comparison to the air flow rate and consider Cp = 1117 J/kg·K and γ = 1.3.
What is the specific thrust produced by this engine under the given conditions?
A
586 Ns/kg
B
745 Ns/kg
C
686 Ns/kg
D
500 Ns/kg

Correct : b

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ideal turbojet engine specific thrust calculation GATE Aerospace Engineering 2010 GATE AE 2010 Q53 aircraft propulsion turbojet specific thrust gas turbine engine performance

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