An aircraft powered by a single turbojet engine is flying at 45,000 ft. The airc

Question

An aircraft powered by a single turbojet engine is flying at 45,000 ft. The aircraft has a wingspan of 35 ft, a planform area of 400 ft2 and an Oswald efficiency of 0.85. Compute the pressure and density at 45,000 ft. using the appropriate standard atmosphere equation and the data from the standard atmosphere at 40,000 ft. Do not simply interpolate. Calculate the velocity and the calibrated velocity of the aircraft if it is flying at M = 0.6. If the turbojet has an inlet and exit area of 8.5 ft:2 and 4 ft2, an exit velocity of 1800 fps and an exit pressure of 600 Ibf/ft2, compute the thrust generated by this engine, d. Assuming steady level flight and a weight of 22,000 Ibf, determine the lift coefficient, the total drag coefficient, and the zero-lift drag coefficient for this aircraft.

Explanation / Answer

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