6.3 Consider an airplane patterned after the Fairchild Republic A-10, a twin-jet attack aircraft. The airplane has the following characteristics: wing area = 47 m², aspect ratio = 6.5, Oswald efficiency factor = 0.87, weight = 103,047 N, and zero-lift drag coefficient = 0.032. The airplane is equipped with two jet engines with 40,298 N of static thrust each at sea level. a. Calculate and plot the power-required curve at sea level. b. Calculate the maximum velocity at sea level. C. d. Calculate and plot the power-required curve at 5-km altitude. Calculate the maximum velocity at 5-km altitude. (Assume the engine thrust varies directly with free-stream density.)

! Required information Problem 06.001 - Calculate thrust required - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL THE PARTS Consider an airplane modeled after the twin-engine Beechcraft Queen Air executive transport. The airplane has the following characteristics: weight is 38,220 N; wing area is 27.3 m²; aspect ratio is 7.5; Oswald efficiency factor is 0.9; and zero-lift drag coefficient CD,0 is 0.03. NOT Th is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Problem 06.001.a - Calculate thrust required Calculate the thrust required to fly at a velocity of 525 km/h at standard sea level. Assume the value of poo = 1.225 kg/m³ at standard sea level. The thrust required to fly at a velocity of 525 km/h at standard sea level is N.

Ign, McGraw-Hill, this chapter) and by New York, 1999, for more information. EXAMPLE 6.18 Estimate the landing ground roll distance at sea level for the CJ-1. No thrust reversal = 0. The spoilers increase the zero-lift, used; however, spoilers are employed such that L drag coefficient by 10 percent. The fuel tanks are essentially empty, so neglect the wejehr of any fuel carried by the airplane. The maximum lift coefficient, with flaps fully em ployed at touchdown, is 2.5.

An airfoil has a lift curve slope at 7/rad and angle at zero lift of -3deg. At what angle of attack will the airfoil develop a lift of 120 lbs/ft at 110 mph under SSLC? Assume c = 10ft.