In 2001, a commercial aircraft lost all power while flying at 10,000 m over the Atlantic Ocean, about 100 km from the Azores Islands. The skilled pilot put the plane into a gliding mode and successfully landed in the Azores. Assume that the airplane lift and drag coefficients are given by the equations in Question 1, with Ar = 7, C = 0.02 and a symmetric airfoil. a. Show that the max ratio between the lift and drag [(L/D)max] occurs when C = 2CD. b. What are (L/D)max and for a the airfoil? c. In the gliding mode, show that the aircraft sinks at an angle tane drag/lift. d. Estimate the maximum possible glider distance of the aircraft (This occurs at the maximum ratio between the lift and drag forces). 2