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An experimental aircraft X-31A has a takeoff mass of 6335 kg, a wing area of 21 m, with a wing span of 6.95 m.

An experimental aircraft X-31A has a takeoff mass of 6335 kg, a wing area of 21 m, with a wing span of 6.95 m. and a turbofan engine with 47.2 kN of thrust. If CD = 0.016 and e = 0.92, determine the aircraft's absolute ceiling. Assume CL = 1.7. Lmax

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