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Mars Rover Presentation

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  • EGM064: Group Project
  • EGM064: Group Project

Transcript

  • 1. DESIGN OF A MOBILITY SYSTEM FOR A MARS ROVER MANDEEP PHULL
  • 2. Presentation Content
    • Introduction
      • Aims for the Mars Rover project
      • Why?
    • Types of Mars Rovers
      • Wheeled
      • Tracked
      • ELMS
    • Design of ELMS
    • Design of Bracket
    • Future of Mars Rover
    EGM082: Individual Project
  • 3. Introduction
    • Aims of the Mars Rover Project
      • Design suitable mobility system
      • Design bracket to house motors
      • Testing of the Mars Rover
    • Why
      • Interest – MER ( Mars Exploration Rover )
      • Distinguish life on Mars
      • Suitable environment
      • History of Water
      • Hostile Terrain
      • Mobility system is key
    • Types Of Mars Rovers
      • Wheeled
      • Tracked
      • ELMS
    EGM082: Individual Project
  • 4. Types of Mars Rovers
    • Wheeled
      • Favoured system by NASA
      • Rocker-bogie suspension
        • Spring-less suspension system
        • Chassis comprises of main rocker arm and secondary arm
        • Wheels joined by ‘bogies’
        • Uses Ackermann steering
        • Equal distribution of traction on each wheel
    EGM082: Individual Project Ref: http://en.wikipedia.org/wiki/Rocker-bogie
  • 5. Types of Mars Rovers
    • Tracked
      • Promising concept – better traction
      • Offer low vehicle sink-age
      • Better pull
      • Quite inefficient
      • Uses Skid steering
      • Obstacle negotiation easier
      • System vulnerable to dust/debris
    EGM082: Individual Project Ref: http://www.dlr.de/rm/en/desktopdefault.aspx/tabid-3815/6074_read-8857/
  • 6. Types of Mars Rovers
    • ELMS
      • Developed by Lockheed Missiles and Space Company
      • Elastic track is fundamental component
        • Continuous elastic strip made of high strength material
      • Loop mechanism offers 2 advantages
        • Two 180 degree bends provide spring suspension
        • Lower section is stiffened, removes the need for additional support
      • Fewer contact time between loop and drive wheel
    EGM082: Individual Project Ref: W. Trautwein, Design, Fabrication and delivery of an improved single elastic loop mobility system (ELMS), Volume II, Technical Report, NASA
  • 7. Design of the ELMS EGM082: Individual Project All dimensions in mm
  • 8. Design of the Bracket EGM082: Individual Project All dimensions in mm
  • 9. Future of Mars Rovers
    • Mars rovers are continually improving since the 1980’s
      • Self navigation
      • Solar panels used to retrieve its power sources
    • Spirit and Opportunity
      • Twin rovers
      • Rocker-bogie suspension
      • Scientific instruments
        • Pancam
        • Navcam
        • Magnets, amongst others!
      • Materials
        • Aeroshell – Aluminium honeycomb structure between graphite epoxy sheets
    • ELMS very attractive alternative
      • Better terrain negotiation
      • Benefits from tracked system advantages
      • Low power consumption
    EGM082: Individual Project Ref: http://martianchronicles.wordpress.com/2009/01/13/5-years-on-mars/
  • 10. Any Questions?