Question: solve Question 9 (5 points) During Takeoff, an aircraft is flying at Vigxeog = 140 fi/s. Once reaching altitude, the cruise speed is Voryise =

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Question 9 (5 points) During Takeoff, an aircraft is flying at Vigxeog = 140 fi/s. Once reaching altitude, the cruise speed is Voryise = 760 fis. If the turbojet exhaust velocity in both instances is V, exhaust 200 ft/s, determine how much greater the propulsive efficiency of the engine is when operated at cruise. (Hint: See Example 4.10)

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