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Journey of Human Achievements: From Fire to Space Elevators

Discover the milestones of human ingenuity, starting from cave man discovering fire to major advancements in transportation and space exploration. From the first automobile in the late 1800s to breaking the sound barrier in 1947, and the historic moon landing in 1967, this timeline captures the essence of human achievement. Learn about revolutionary technologies like the reusable Space Shuttle and ambitious concepts such as the Space Elevator, a potential future in which carbon nanotubes could lower launch costs to $1.48 per kg, opening a new era for space travel.

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Journey of Human Achievements: From Fire to Space Elevators

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  1. Human Achievements • Cave man discovers fire • Long time ago • First automobile • Late 1800’s • First Airplane • 1911 • Broke the sound barrier • 1947

  2. Space Travel • First went into space – 1957 • Sputnik • Man on the Moon – 1967 • Saturn V 1967-1975 • Space Shuttle

  3. Space Shuttle • First Reusable launch vehicle • $450 Million per mission launch • $22,000 per kg

  4. Possible Solutions • Rail guns • New Shuttle • Orion • Rocket Plane • Spaceship One • Permanent blimp • Horizontal ascender • Space Pier • Space Elevator

  5. SPACE ELEVATOR • Estimated Costs • $1.48 per kg • Technology already exists • Ground Station • Tether • Space Station • Beam Source • Climber

  6. Elevator Components Ground Station Tether Beam Source Space Station Climber

  7. Ground Station • Mobile • Similar to oil platform • Location? • Off the coast of South America/Mexico • Equator • Function as an anchor for the tether

  8. Tether • Carbon Nanotubes • Has 26,000 ksi tensile strength • Steel – 798 ksi

  9. Space Station • Large Mass • Geosynchronous orbit • Start small and send stuff up • Increasing mass

  10. Beam Source • Laser • BIG • To be determined by mass of climber • Types • Chemical • Solid state • Gas • Dye • Semi-conductor

  11. Climber • 100 mph • Carry heavy payloads • Cheap • $1.48 per kg

  12. Potential Problems • Cable Strength • Space junk • Meteors • Failure Cascade • Corrosion • Material Defects • Weather • Vibrational harmonics • Van Allen belts (radiation exposure)

  13. Space Elevator Movie

  14. 2008 Competition • Power beaming options • Laser • Ascent/tether height • 1000 m • Tether geometry • 3/16” round cable • Average ascent velocity • ≥ 5 m/s

  15. What are we doing? • Ground Station Components • Climbing Mechanism

  16. Laser Control • All teams will use the TrumpF TruDisk 8002 High Powered Laser for Transmission • Track length is 1 km • Everything else; TBD

  17. Tracking System (Stage 1) Design a receiving unit enables basic feedback of laser pointer location

  18. 2. (Stage 2) Transmit display data wirelessly to remote PC 3. (Stage 3) Mount laser to a 2-axis gimbal assembly; Use real time data acquired by a PC to track receiving unit and correct for azimuth and pitch

  19. Prototype • Parts • Photo-transistors • CPLD • Laser • Components – IC’s, resistors, caps, LED’s, etc. • Circuits (bread board) • Analog-Digital • Proto-board Layout

  20. Mechanical Climber • Simple and adaptable • For competition changes • Roller mechanism to climb cable • Hope to show it off at expo

  21. Future Senior Design Teams • Power Converting/Receiving • Laser/optical control • Programming of Laser • Photovoltaic Supporting Structure

  22. QUESTIONS???

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