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Alternative Locomotion Concept Feasibility Study

Alternative Locomotion Concept Feasibility Study. February 19, 2009. Concept: Snowmobile/Ski Locomotion. Turning: Carve an edge into regolith Requires turning of skis Suspension: Provides vibration dampening Not effective against large objects Friction drag increases

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Alternative Locomotion Concept Feasibility Study

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  1. Alternative Locomotion Concept Feasibility Study February 19, 2009 [Cory Alban] [Mission Ops] [Locomotion]

  2. Concept: Snowmobile/Ski Locomotion [Cory Alban] [Mission Ops] [Locomotion] • Turning: Carve an edge into regolith • Requires turning of skis • Suspension: Provides vibration dampening • Not effective against large objects • Friction drag increases • Power requirement (5% of 40Wh battery) • Still requires propulsion system • Not recommended for implementation [Cory Alban] [Mission Ops] [Locomotion]

  3. Concept: Toy Ball Locomotion [Cory Alban] [Mission Ops] [Locomotion] • Turning/Propulsion: Displace Mass • Hang payload/inert mass • Torque acts on outer ball only • Mass/Volume savings • Driven by system • Implement? • 100g YES! • 10kg can do it • Arbitrary No [Cory Alban] [Mission Ops] [Locomotion]

  4. Ski Concept Backup [Cory Alban] [Mission Ops] [Locomotion] • Lunar regolith density (1500-2000 kg/m3) • 15x to 20x more dense than snow • Turning will require large power for long skis • Short skis less stable, more chance to dig into moon • Lack of propulsion • Separate propulsion system required • If stuck on rock, could immobilize rover

  5. Ski Concept Backup 2 [Cory Alban] [Mission Ops] [Locomotion] Lunar Friction Drag

  6. Toy Ball Climbing Ability [Cory Alban] [Mission Ops] [Locomotion] Summing moments on slope of arbitrary inclination…

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