Air enters the diffuser of a turbojet engine at 18 kPa, 216 K, with a volumetric...

Air enters the diffuser of a turbojet engine at 18 kPa, 216 K, with a volumetric flow rate of 230 m³/s and a velocity of 265 m/s. The compressor pressure ratio is 15, and its isentropic efficiency is 87%. Air enters the turbine at 1560 K and the same pressure as at the exit of the compressor. The turbine isentropic efficiency is 89%, and the nozzle isentropic efficiency is 97%. The pressure at the nozzle exit is 18 kPa. Use an air-standard analysis.

a)

Determine the rate of heat input to the combustor, in MW.

Expert Solution

samet mamat answered 9 months ago

Air enters the diﬀuser of a ramjet engine at 22 kPa, 228 K and a velocity...

Air enters the diﬀuser of a ramjet engine at 22 kPa, 228 K and a velocity of 920 m/s, decelerating to a negligible velocity at the point at which heat is added. Using cold airstandard analysis with constant speciﬁc heats at 300K, determine the following if the exit pressure is 22 kPa and heat is added at 750 kJ per kg of air: (a) The pressure at the diﬀuser exit, in kPa. (b) The velocity at the nozzle exit, in...

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