In: Mechanical Engineering
3. A jet aircraft has a drag polar CD = CD,0 + CL 2 /(?e?) = 0.02 + 0.04 CL 2 and wing area 500 m2 . Its initial weight is 3,000,000 N, which includes the fuel weight 1,000,000 N. The thrust specific fuel consumption is 0.9 (N of fuel) / (N of thrust ·hour). Find the maximum endurance of this aircraft.