Question

3. To measure the drag of an upright person, without violating human-subject protocols, a life- sized mannequin is attached to the end of a 6-m rod and rotated at ?-80 rev/min, as shown in the figure. The power required to maintain the rotation is 60 kW. By including rod-drag power, which is significant, estimate the drag-area CDA of the mannequin, in m. (?-1.2 kg/m3, u-1.8x105 kg/m s) (35 pts) L- 6 m, D 8 cm

Answer 1