Question

During the design phase of the Gulfstream G550, A wing full-size wing was tested in a large wind tunnel at sea level conditions and set to a velocity of 225 miles/hr. The wing area is 1,137 square feet and has an average chord of 12.4 feet (ignore the wing taper and use the average chord). At zero lift, the moment about the center of gravity was measured at -7,250 foot-pounds. When repositioned to a second angle of attack, the lift and moment about the center of gravity are measured at 51,500 pounds. and 10,950 foot-pounds., respectively. Determine the location of the academic center under these conditions.

Answer 1