Mars Rover Presentation

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DESIGN OF A MOBILITY SYSTEM FOR A MARS ROVER MANDEEP PHULL

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Transcript of Mars Rover Presentation

Page 1: Mars Rover Presentation

DESIGN OF A MOBILITY SYSTEM FOR A MARS ROVER

MANDEEP PHULL

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Presentation Content

EGM082: Individual Project2

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

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Introduction

EGM082: Individual Project3

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

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Types of Mars Rovers

EGM082: Individual Project4

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

Ref: http://en.wikipedia.org/wiki/Rocker-

bogie

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Types of Mars Rovers

EGM082: Individual Project5

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

Ref: http://www.dlr.de/rm/en/desktopdefault.

aspx/tabid-3815/6074_read-8857/

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Types of Mars Rovers

EGM082: Individual Project6

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

Ref:W. Trautwein, Design, Fabrication and delivery of an improved single elastic loop mobility system (ELMS), Volume II, Technical

Report, NASA

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Design of the ELMS

7 EGM082: Individual Project

All dimensions in mm

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Design of the Bracket

8 EGM082: Individual Project

All dimensions in mm

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Future of Mars Rovers

EGM082: Individual Project9

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

Ref: http://martianchronicles.wordpress.com/

2009/01/13/5-years-on-mars/

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Any Questions?