Mars Rover Presentation

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  • EGM064: Group Project
  • EGM064: Group Project
  • Mars Rover Presentation

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

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