Assuming the helicopter is on the ground and modeling each o

Assuming the helicopter is on the ground, and modeling each of its four blades as a slender rod with weight W = 4001b and length I, = 24 ft. determine the constant moment that must be applied by the engine to the mast at O to spin the blades from rest to an angular speed of 289rpm in 90s.

Solution

solution

constant moment = weight X length

= 400 X 24

= 9600 lb.ft