practice_problems_for_midterm

practice_problems_for_midterm - D = 0.02 + 0.05 C L 2 . It...

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1. A jet fighter for carrier operation has the following characteristics: W = 18000 lbs S = 320 ft 2 C L,max = 2.4 C L,g = 1.8 The landing drag polar, in ground effect is C D = 0.4 + 0.05 C L 2 . Assume that there is no surface wind, and that there is no thrust while on the ground. Also assume that the friction coefficient while braking is 0.40. The flight deck length available for the landing ground roll is 700 ft. Approximate how fast the carrier must be going for the landing to be completed successfully. 2. The airplane described above has a drag polar while flying, C
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Unformatted text preview: D = 0.02 + 0.05 C L 2 . It is flying straight and level at sea-level and at a speed of 400 fps. The pilot puts the airplane in a level, coordinated turn with a radius of 1500 ft. The pilot adjusts the engine thrust as required to maintain the speed at 400 fps (sustained turn). The pilot next brings the airplane out of the turn to a wings level climb condition, without changing the thrust. Estimate the rate of climb. Assume no acceleration along or perpendicular to the flight path in the climb (straight, constant speed climb)....
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