CubeSat (ENG491CU1) Informational Meeting

1. CubeSat (ENG491CU1)Informational Meeting Get Interdisciplinary Design Experience Working on One of the Worlds Smallest Satellites Fall 2005

2. Presentation Overview • People Involved • Introduction to CubeSats • Introduction to ION • Semester Priorities and Teams • Class Information • Calendar • Next Steps

3. Systems Team Program Manager(s) (1-2 Graduate Student TAs) Faculty Advisors (Remote Sensing, Orbital Mechanics, and Software) Attitude Determination and Control (ADCS) Team Electrical Team Mechanical Team Ground Station Team Software Team Corporate Partners, Electronic Services Shop, External Faculty Advisors, Machine Shop People • Purvesh Thakker (ECE PhD Student) • Prof. Gary Swenson (ECE Remote Sensing) • Prof. Victoria Coverstone (AE Orbital Mechanics) • Prof. Matt Frank (ECE Software)

4. Cubesat Satellites 3 CubeSats PPOD

5. Cubesat Satellites • Cubesat Project History. • Started as collaboration between California Polytechnic State University (Cal Poly) and Stanford University. • Provides a standard for design of picosatellites. • Provides for common deployer. • Allows for reduced cost and development time. • Lets any individual or organization develop their own satellite. • Standard cubesat satellite is: • 10 cm cube with mass of 1kg. • Approximately 60 registered Cubesat Teams. • Typically launches provided by Russian company. • Multiple cubesat’s piggy-back along commercial launch. • 6 cubesats were launched Summer 2003.

6. University of Illinois CubeSat • Illinois Tiny Satellite Initiative started in ~August 2001 • Various majors (AE, CE, EE, ME, TAM, CS, GE) • Typically 15 students involved • Over 100 students involved to date Completed ION shown with DNEPR launch vehicle from Russia’s Kosmotras

7. University of Illinois Cubesat - ION • Costs • Parts/Labor: $30,000 USD. • Launch: $85,000 USD. • Delivered to Cal Poly: April 2005 • Launch date: Tentatively November, 2005 • DNEPR launch provided by Kosmotras. • 14 cubesat satellites expected launched. • UIUC, Cornell, Norway, Cal Poly, South Korea, Taiwan, Arizona… • Launch Parameters • Low Earth Orbit at 650-700 km. • Orbit lifetime 14+ years.

8. Waves of oxygen airglow perturbations carried by wind (760nm) ION Thunderstorm convection Mountains Mission 1: ION’s photometer studies dynamic drivers of the upper mesosphere Actuator commands Sensor telemetry ION Missions Mission 3: ION tests SID processor board from Tether Applications Misssion 2: ION tests VAT thrusters from Alameda Mission 4: ION tests B/W CMOS camera Mission 5: ION demonstrates ground based attitude control on a CubeSat

9. ION Hardware

10. Antenna strength along outside of bagel-shaped pattern ION Photos Photograph from CMOS camera Thruster (above) and thruster firing (below) ION’s Earth ground track ION Internal Wiring Photometer with lens and filter housing Torque coil on a PC board

11. More ION Photos

12. ION Software

13. Environmental Testing ION vibration test in test PPOD DNPER High level Vibration Test Response Data, Long Axis Thermal-vacuum chamber

14. Fall 2005 Priorities • ION 1 • Prepare Ground Station • Practice, practice, practice communication • Battery charger • Launch and operations? • Publications, tutorials • ION 2 • Prototype power, C&DH internal software • Order and test communication system • Design structure, attitude control system • Define payloads

15. Fall 2005 Teams • ION 1 Ground Team: Improve ground communications system, practice communication • ION 2 Power Team: Build prototype of design from Summer • ION 2 Command & Data Handling Team: Develop prototype internal communication software • ION 2 Communications Team: Implement and test communications hardware including ground station • ION 2 Structures Team: Design the structure of the satellite • ION 2 Attitude Control Team: Design hardware and software for controlling satellite orientation • ION 2 Sensors Teams: Develop payloads to support various satellite missions

16. Teams – ION 1 Ground Team • Fix Antenna • Practice communications with satellites • Misc. ground station improvements • Backup stationary antenna • Operate satellite after launch • Develop remote ground stations • Train ground operators

17. Teams – ION 2 Power • Solar Panel power point tracking • Battery charger • Satellite sleep mode • System watchdog timer • Voltage, current, and temperature sensors • PIC • Regulators • Switches • Latchup protection

18. Teams – ION 2 Cmd & Data Hnd. • Define internal satellite communication • Prototype internal communication bus with PICs • Document internal communication interface • PIC Training documents • PICs • Memory • I2C communication • Packet definition • Memory management • Error and flow control • Prototype Main PC Board • Satellite to ground communication software

19. Teams – ION 2 Communications • Design communication system • Select flight and ground hardware • Test and modify hardware as needed • Design and develop antenna

20. Teams – ION 2 Structures • Satellite fabrication • Fulfill all Cubesat physical spec requirements. • Design frame, mounts, etc • Switches, data port, separation springs • Removable battery • Epoxies • Solar panel construction • Deployable antenna?? • Vibration Testing • Thermal/Vacuum testing

21. Teams – ION 2 ACS • Handles all ACS hardware and software • Performs attitude/orbit simulation and analysis • ACS sensors and actuators • ACS processor • Attitude control software • Attitude determination software

22. Class Meetings • Weekly Systems Team Meeting • Poll each team • Discuss activities from previous week • Discuss plans for next week • Announcements, etc. • Occasional special presentations by advisors/faculty. • Lab Hours • No class “lab hours” • Each team establishes own weekly lab hours • Declare team lab hours team proposal • Log all hours with a brief description of what was done • Class requires ~50 lab hours per credit (per university guidelines)

23. Resources • Course Web Site • http://cubesat.ece.uiuc.edu • Course Class Drive • V:\cubesat folder on Cubesat computers • See Training folder • Labs • 206H Talbot • 330E Everitt Lab • ECE/Talbot Machine Shops

24. Tentative Calendar • Thursday, Aug 25: Informational Meeting • Monday, Aug 29: Meet with TA / Select Teams • Tuesday, Aug 30: First Systems Meeting • Tuesday, Sept 6: Team Proposals • Tuesday, October 18: Design Review • Thursday, Dec 8: Final Demo / Documentation Review

25. Team Proposals • Ten minute presentation for each team • Each team member should discuss their focus item • Team Members with major, year, credits/hours • Team semester plans • Focus items for each person • Week by week planned schedule • Team weekly lab hours

26. Handouts • Getting Started • SSH into Class Drive • Class Registration Form

27. Registering for CubeSat • Juniors/Seniors register for Interdisciplinary Senior Design for 1 to 3 credits • ENG491CU1 (Fall) • ENG491CU1 (Spring) • Need to have approval form signed to register (available on Web Site) • Grad students register for Independent Study • Course number varies by department • Thesis/Master’s Project sometimes possible

28. Grading • Based on • Lab hours • Contributions to team • Participation in systems meetings • Participation in reviews • End of semester activity summary • Success in course depends on your individual initiative

29. Next Steps • Register for class • Sign up for class email list • Meet with TA to identify team • Get access to labs, computer accounts, etc • Become familiar with project • Read ION paper • Read documentation for your team • Browse available team files on class drive • Establish regular team work sessions • Team proposal due one week after teams established