MAE2_Solution3

MAE2_Solution3 - 2 . (a) If the aircraft is in flight at...

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MAE 2 Homework #3 (Fall 2010) Note: Some numbers and wording may be changed relative to the textbook problems. When differences occur, this assignment sheet has precedence. Problem 6.4 Compute and plot the power required versus airspeed and the power available versus airspeed curves for the following General Aviation (GA) aircraft. Use your plots to estimate the maximum airspeed at 15,000 ft altitude. Assume engine power is proportional to atmospheric density. AR = 6.2, S = 181 ft 2 , e = 0.91, W = 3,000 lbf, C D,0 = 0.027 P avail = 345 hp (sea level), propeller efficiency = 0.83 Problem 6.9/6.10 The Sopwith Camel has a maximum lift-to-drag ratio of 7.7, aspect ratio = 4.1, Oswald efficiency factor = 0.7, mass = 635 kg, and wing area of 21.5 m
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Unformatted text preview: 2 . (a) If the aircraft is in flight at 1,500 m altitude when its engine fails, how far can it glide in terms of distance measured along the ground? (b) Calculate the equilibrium glide airspeed that corresponds to the minimum glide angle at 1,500 m altitude. Problem 6.27 The Predator is an unmanned surveillance aircraft manufactured in Rancho Bernardo CA. It is equipped with an Rotax engine sea-level rated at 85 hp. Calculate its maximum endurance (in hours) at sea level. b = 14.85 m, S = 11.45 m 2 , e = 0.7, C D,0 = 0.03 SFC = 0.2 kg/(hp.hr), propeller efficiency = 0.9 maximum mass at takeoff (with fuel) = 1020 kg fuel mass = 295 kg...
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This note was uploaded on 01/05/2011 for the course MAE 2 taught by Professor Nomura,k during the Fall '08 term at UCSD.

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MAE2_Solution3 - 2 . (a) If the aircraft is in flight at...

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