Unified Engineering Spring Term 2004

Problem P4. (Propulsion) (L.O. D)

For this problem, use the aerodynamic, structural and battery parameters you have determined for your Dragonfly.

a) Calculate the speed that you would fly the Dragonfly if you wanted to maximize range with no additional payload.

b) Calculate the speed that you would fly the Dragonfly if you wanted to maximize endurance with no additional payload.

c) Assume the overall efficiency of the battery-motor-propeller combination is 0.15. As a function of the number of eggs carried (0 through 5) tabulate the velocity for maximum endurance, the power required, and the endurance.