The single stage epicyclic gearbox considered in previous questions is shown again in Fig 1. The planet gears, B, have 30 teeth, and the sun wheel, D has 88 teeth. The input shaft, A, rotates

at 539 rev/min, in a clockwise direction. The annulus, C is fixed, and

the output is taken from the sun wheel, D.

If the input shaft delivers

3 kW, and the gear box efficiency is 79 %, determine the holding

torque acting on the annulus, C. Treat clockwise torques as positive, and give your answer to 2 dp.

Fig. 1