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DemoSat II: Lunar Landing Site Imaging and Rover Mechanism Design

The DemoSat II project, facilitated by the Colorado Space Grant Consortium at the Colorado School of Mines, aims to develop a satellite system capable of gathering visual data as it approaches potential lunar landing sites. This initiative focuses on the design and construction of satellites such as DescentSat, LandSat, and RoverSat that will capture images, record conditions, and assist in future lunar missions. The project encompasses various subsystems including communication, mobility, and power mechanisms to ensure successful data gathering and transmission from selected landing sites.

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DemoSat II: Lunar Landing Site Imaging and Rover Mechanism Design

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  1. DemoSat II Colorado Space Grant Consortium Critical Design Review Design (EPICS) Division Colorado School of Mines Golden Colorado 80401 303-273-3592 rknecht@mines.edu April 2, 2004

  2. CSM Mission • Landing site imaging • DescentSat • Video mechanism • TXSat • Radio transmission mechanism • LandSat • Up-right mechanism • RoverSat • Rover mechanism • Video mechanism

  3. Project Goals • to gather visual images and pictures as the satellite approaches the landing site. • to initiate research supporting future missions to the lunar surface. • to explore the design issues and imagery necessary to select a landing site.

  4. Project Demographics

  5. Landing Site Satellites The purpose of the Landing Site Sats is to gather data and information support the selection of a landing site on other moons or planets. Potential Sats DescentSat LandSat RoverSat

  6. Power energy Visual Images conditions Transmission Storage Location conditions data Impact conditions Orientation & Mobility conditions General Subsystem Diagram Landing Site Sat

  7. Subsystem Examples • Video camera • Radio transmission • Orientation mechanism • Ramp deployment • Rover • Remote controller • BrainStem controller • Power supply

  8. Up Down Crash

  9. TEAM U. D. C. JACOB KIRKLEY DAN ALLEN NATHAN SKITT ZAC SELF

  10. Satellite Subsystems • MOTOR & GEARING • TRACK SYSTEM & CHASSIS • COMMUNICATION SYSTEMS • SATELLITE HOUSING

  11. Subsystem Description • MOTOR & GEARING • Two motors will be used to drive the rovor. • Each motor will be connected directly by gears to the wheels. COST & WEIGHT • Weight of motor - 50 – 100 grams of weight. • Cost of each motor – $50. • Weight of gears (total) – 20 grams. • Cost of gears (total) – $10.

  12. Track System & Chassis • Made from Aluminum Channel, aluminum angle, and small nuts and bolts. • Wheels for track system made from R/C car wheels. • Track made from rubber. • “L” shaped brackets to hold motors. • Tracks in a Triangle shape. • Chassis made from Al angle open on bottom. • Cost: $30-50 • Weight: Approx. 350-400 grams

  13. Tracks & Chassis

  14. Tracks & Chassis

  15. Communications Systems • Onboard video camera. • Transmitter for the video receiver from the camera. • Remote control receiver with a 3 – 5 mile range. • Remote control. • Two onboard 12-v batteries to run electronics. • A third battery for the motors. • Brainstem to control all communication functions. • Estimated total cost: $900 - $1200 • Estimated total weight: 400 – 500 grams.

  16. Satellite Housing • Basic pyramid design • Landing possibilities • Solutions to deployment • Attaching to tether • Breaking the box • Will cost between $10 - $50

  17. Budget • PROPOSED EXPENSES: (Approx.) • Motor and gearing: $110 • Track System & Chassis: $50 • Communication Systems: $1200 • Satellite Housing: $50 • Total Expenses: $1410

  18. Team 2

  19. Major Subsystems • Rover • Case • Camera • Power

  20. General Diagram

  21. System Description • Rover • Front suspension • Rear Suspension • Main Chassis • All main electrical components are contained on the chassis • Has a rolled arch for added stiffness • Solar plate mounted on hinge above chassis for cooling and light purposes • Case • Rectangular, rounded edges • Durable & easy to build • Camera • Mounted on front of rover for maximum visibility

  22. Level Arm Mechanism Orientation

  23. General Power Diagram

  24. Mass Budget

  25. Structure

  26. DemoSat Project Schedule

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