= = 2. The wind tunnel (wt) is operating at sea level conditions with an air velocity of Vwt V 159.2 knots. The load cells (force sensors), mounted to the spar of the model, are aligned to measure loads parallel to the chord line (Fx) and perpendicular (Fy). While the airfoil is positioned for a positive angle of attack, a=5, the load cells measure forces of Fx 1.25 Newtons and Fy = 3864 Newtons. A pitch-down torque of 118 Newton-meters (around the 1/4 chord mounting point) is also measured. The air density for this test is 1.22 kg/m. = (a) Draw a free body diagram of the wing including Fx, Fy, lift, drag, velocity vector, chord line, and angle of attack. (b) Evaluate the lift generated. (c) Evaluate the drag generated.