2021-09-30 Meeting Minutes - Drivetrain

4 Days until Sourcing Conclusion!!

18 Days until First Draft CAD Due!!!



Goals

  • Review prototyping data & research to determine how to proceed for our final design

Discussion

  1. CF tubes thoughts 
    • Consider skinny chassis with more mounting → get more info first
    • Compare CF suspension VS aluminum body → will our suspension be too heavy?

  1. Differential bar VS differential gearbox decision
    • Continue with bar
    • Keep in mind for stiffness we want a low CoG, the distance between mounting points 
  2. Discuss methods of increasing the suspension's stability and its alignment to the rest of the rover
  3. Review motor options
    • Nanotechs, prefer shorter length
  4. Review motor layout
    • Proceed with motor integration into wheels?
    • Combined bogie motors? 6 motors → 4 motors
  5. Review wheel layout?
    • Reference prototype geometry in terms of layout

Additional Tasks

  • Old rover diassembly
  • Read documentation and analysis papers of rocker-bogie projects
    • Emily
  • Carbon fibre bonding, figure out tolerance and prototyping
    • Asha
  • Learn FEA
  • Learn SolidWorks simulation?
  • Investigate and prototype tread styles
  • Continue custom wheel research

Update & Action Items

EVERYONE update SolidWorks licenses!

Member

Update

Action Items

Emily Adam (Differential bar)

  • Final day of prototype testing
  • Went through testing data and selected motor candidates
  • Finalize motor candidates → prepare to buy
    • Look at VPs and axial loading
    • Look into rolling torque
Former user (Deleted) (Wheel connections)
  • Got ANSYS working for myself and Andrew
  • Verify tube
  • Contact composites Canada
  • Weight comparison, CF vs extrusion members
  • Got ANSYS working
  • Comms update
    • Reduced number of antennas
    • Need 2.4 GHz up high, whereas 900 MHz isn't picky (can mount on E-Box?)
  • Keeping gimbal
  • Compare CF chassis vs extrusion-config chassis

Former user (Deleted) (Frame/structure)



  • Finished Wheeleeez CAD
  • Open up the hub and take more measurements
  • Arm stuff......................................
  • Arm stuff......................................