DemoSat II

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