[填空题]
A helicopter rotor blade can be consih7+ w y6/vb+*zks82y3e6knh lsh npfpdered a long tv j s:m(3 l6q6 y4qfa/e6lp u d3ja,l1nijvqp)hin rod, as shown in Fig. 8–46p4jml/6yjln6l ad13uje,p a qq3q:v 6i s)(fv. (a) If each of the three rotor helicopter blades is 3.75 m long and has a mass of 160 kg, calculate the moment of inertia of the three rotor blades about the axis of rotation. $kg \cdot m^2$ (b) How much torque must the motor apply to bring the blades up to a speed of 5 $rev/s$ in 8.0 s? $m \cdot N$
Post time 2025-2-18 20:00:22
