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Lunar Regolith Protection System

Lunar Regolith Protection System. Dalhousie University Mechanical Engineering MECH 4020 Team #3. Lunar Regolith Protection System. Team #3 Apr 8 2009 Slide #2. Problem Definition. Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base

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Lunar Regolith Protection System

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  1. Lunar Regolith Protection System Dalhousie University Mechanical Engineering MECH 4020 Team #3

  2. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #2 Problem Definition Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions • Design an apparatus or system to protect Light Detection and Ranging System (LIDAR) instrument from regolith • Improve upon Phoenix design • Design must function in a lunar environment

  3. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #3 Fall Semester Design Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions • Final conceptual design as of December ‘08

  4. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #4 Final Design Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions • Improvements made to December ‘08 design

  5. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #5 Adjustable Brackets Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions • Allow for fine-tuning of SMA orientation before the range of motion becomes consistent • Final dimensions of SMA’s would be used • Fasteners eliminated from actual model

  6. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #6 Lid Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions • Lid profiles unchanged • Additional lip on minor lid to prevent dust from infiltrating seam

  7. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #7 Base Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions • Male mating surface along rim for accurate seating of lids • SMA attachment moved to base plate

  8. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #8 Active Protection System Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions • Charged particles are attracted to the capacitor plates and will not interfere with LIDAR operation • Testing demonstrated that 100% of charged particles are collected

  9. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #9 Testing: Active Protection System Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions • Capacitor mock-up in Styrofoam block • Arcing caused by plates being too close

  10. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #10 SMA Hinge Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions • Nitinol (NiTi) actuator alloy • Transformation Temperature: 40oC

  11. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #11 SMA Hinge Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions Thin-film Heaters Final Dies

  12. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #12 Testing:SMA Hinge Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions SMA Wire Small SMA Strips

  13. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #13 Testing:SMA Bowing Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions Clamping Bars Active Strips Passive Strip

  14. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #14 Complete System Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions

  15. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #15 Complete System Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions

  16. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #16 System Performance Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions

  17. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #17 System Performance Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions

  18. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #18 Limitations Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions • Power requirements • Lid mating and range of motion

  19. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #19 Budget Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions

  20. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #20 Requirements Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions

  21. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #21 Requirements Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions

  22. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #22 Conclusions Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions • Complexity of lunar environment • Multi-layered solutions are critical for dust protection • Design strengths • SMA hinge • Lid geometry • Active protection

  23. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #23 Acknowledgements Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions • Dr. Andrew Warkentin • Dr. Marie-Josée Potvin • Dr. Julio Militzer • Dalhousie University Mechanical Engineering Department • Shell Canada

  24. Lunar Regolith Protection System Team #3 Apr 8 2009 Slide #24 Questions? Problem Definition Fall ‘08 Design Final Design Adjustable Brackets Lid and Base Active Protection System SMA Hinge Complete Design Performance Limitations Budget Requirements Conclusions

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