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MEM425F09.HW2 - cruise flight(level constant velocity...

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MEM 425: Aircraft Performance & Design Home work #2 (due 10/08/09) Relevance to Program Outcomes a-k : a, e, k --------------------------------------------------------------------------------------------------------- 1. Consider an aircraft with the following characteristics: Wing span = 35.8 ft. Wing area = 174.0 ft 2 Normal gross weight = 2950 lb Parasite drag coeff. = 0.025 Oswald efficiency factor = 0.8 Propeller efficiency, = 0.8 Sea-level air density = 2.3769*10 -3 slugs ft -3 a. Compute and plot (Thrust_reqd .vs. Velocity) and (Power_reqd .vs. Velocity) in a
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Unformatted text preview: cruise flight (level, constant velocity, constant altitude) at sea level. From these plots determine the minimum required thrust and power, and the corresponding velocities. Denote these velocities by and . b. Compute these (‘optimal’) velocities using appropriate equations from notes or text. c. Repeat (a) and (b) for these altitudes {10,000; 20,000; 30,000} ft. d. Generate and plot and . For smooth plots you need to consider more number of altitudes....
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