Figure shows some details of a compound epicyclic gear drive where I is the driving or input shaft and O is the driven or output shaft which carries two arms A and B rigidly fixed to it. The arms carry planet wheels which mesh with annular wheels P and Q and the sunwheels X and Y. The sun wheel X is a part of Q. Wheels Y and Z are fixed to the shaft I. Z engages with a planet wheel carried on Q and this planet wheel engages the fixed annular wheel R. The numbers of teeth on the wheels are : P = 114, Q = 120, R = 120, X = 36, Y = 24 and Z = 30. The driving shaft I makes 1500 r.p.m. clockwise looking from our right and the input at I is 7.5 kW. a. Find the speed and direction of rotation of the driven shaft O and the wheel P. b. Find the torque tending to rotate the fixed wheel R
Figure shows some details of a compound epicyclic gear drive where I is the driving or input shaft and O is the driven or output shaft which carries two arms A and B rigidly fixed to it. The arms carry planet wheels which mesh with annular wheels P and Q and the sunwheels X and Y. The sun wheel X is a part of Q. Wheels Y and Z are fixed to the shaft I. Z engages with a planet wheel carried on Q and this planet wheel engages the fixed annular wheel R. The numbers of teeth on the wheels are :
P = 114, Q = 120, R = 120, X = 36, Y = 24 and Z = 30.
The driving shaft I makes 1500 r.p.m. clockwise looking from our right and the input at I is 7.5 kW.
a. Find the speed and direction of rotation of the driven shaft O and the wheel P.
b. Find the torque tending to rotate the fixed wheel R.


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