A compound epic cyclic gear train is shown in Figure Q2. Power of 6 kW is supplied to shaft 6 which rotates with angular velocity of 60 rad/s (CCW). Power is taken from shaft 2. The gear module is 1.5 mm As an engineer, you are asked to select appropriate gear sizes such that the gear train provides output rotations in both CCW and CW directions depending on the configuration. Take note of the following requirements: (a) Three gear sizes are available from the last 6 digits of your number code. Example: 496896 Number code: 98 Available gear teeth: 24, 48, 48 teeth Number code: 702103 Available gear teeth: 70, 21, 10 (03) teeth (Any two digit number less than 10, assume 10) You may assign each of the gear size to three of the sun or planet gears Size up the remaining gears: Find the number of teeth for the ring gears and the remaining sun or planet gears. Ensure all gears fit appropriately in the gear train such that it can provide output speed in the CW and CCW directions by changing the configuration ie which gear is to be fixed and which are free to rotate. Hint: You may need to do several iterations in selecting the gear teeth so that the gear train can provide both CW and CCW output directions. State clearly the configuration ie which gear component is to be fixed and which components are free to rotate for these two situations. (20 marks) (b) Calculate the following: (i) The diameters of all the gears (ii) The output speeds of CW and CCW rotations (ii) The fixing couple required on the fixed components when the output rotation in CW and CCW directions. (10 marks) to 17 13 Figure Q2 Gear 3 can be larger or smaller than gear 5 T4 can be larger or smaller than t4. Diagram not to scale