An un-mixed turbofan engine with a bypass ratio of 6.0 , flies with a velocity of $200 \mathrm{~m} / \mathrm{s}$. The core and the bypass nozzles of the engine, that are both convergent nozzles, operate under choked condition and have exhaust static temperatures of $580 \mathrm{~K}$ and $295 \mathrm{~K}$, respectively. The specific gas constant and the ratio of specific heats for both the streams are $287 \mathrm{~J} / \mathrm{kgK}$ and 1.4 , respectively. If the fuel-air ratio is negligible, the thrust per unit mass flow rate generated by the engine is____________ $\mathrm{Ns} / \mathrm{kg}$

Question ID - 155650 | SaraNextGen Top Answer

An un-mixed turbofan engine with a bypass ratio of 6.0 , flies with a velocity of $200 \mathrm{~m} / \mathrm{s}$. The core and the bypass nozzles of the engine, that are both convergent nozzles, operate under choked condition and have exhaust static temperatures of $580 \mathrm{~K}$ and $295 \mathrm{~K}$, respectively. The specific gas constant and the ratio of specific heats for both the streams are $287 \mathrm{~J} / \mathrm{kgK}$ and 1.4 , respectively. If the fuel-air ratio is negligible, the thrust per unit mass flow rate generated by the engine is____________ $\mathrm{Ns} / \mathrm{kg}$