Aerospace Engineering > GATE 2022 > Ramjet Engines
An ideal ramjet is to operate with exhaust gases optimally expanded to ambient pressure at an altitude where the temperature is 220 K. The exhaust speed at the nozzle exit is 1200 m/s at a temperature of 1100 K. Given: γ = 1.4 at 220 K; R = 287 J/(kg-K) for air; γ = 1.33 at 1100 K; R = 287 J/(kg-K) for exhaust gases. The cruise speed of this ramjet is _______ m/s. (rounded off to the nearest integer)
Correct : 545 to 555
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