1. BillikenSat – II Pico-Satellite that conforms to the CubeSat standard Team Leader: Darren Pais Electrical Eng.: Ben Corrado Payload: Rob Arechederra MISSION: The BillikenSat-II team will develop a working prototype Pico-satellite that conforms to the CubeSat standard, and one that incorporates Bio-Fuel cell test experiment as our payload. We will, after rigorous testing and verification of our design, build a flight ready version of BillikenSat-II, in preparation for launch in Nov 2007. Presentation at The Boeing Company- Feb 5, 2007

2. Agenda for today Introduction Payload Aerospace Electrical Overview of mission experiment Brief description and progress in key areas:  Aerospace Engineering Structures Attitude Determination and Control Thermal Analysis  Electrical Engineering Power System Communication System Computer Engineering, data handling

3. Introduction Payload Aerospace Electrical Payload Concept Enzymes V Platinum Anode Cathode H+H+ Nafion 112 H+H+ O2O2 H2OH2O e-e- e-e-

4. Introduction Payload Aerospace Electrical Payload Fuel Cell Bipolar Plates Gold Plated SS-416 Membrane MEA=Nafion ® & Carbon Electrodes Fuel Ethanol, Glycerol, sugar,etc In our satellite: Flat Beer Beer Enzymes Anode Catalyst Platinum Cathode Catalyst Nafion ® Ion Exchange Membrane

5. Introduction Payload Aerospace Electrical Biofuel Cell Fuel Energy Density (Whr/L) Bio-Fuel (beer) compared to other batteries

6. Introduction Payload Aerospace Electrical Biofuel Cell Fuel Energy Density (Whr/L) Comparison between different Bio-Fuels

7. Payload Engineering Introduction Payload Aerospace Electrical Threaded Plug Problems Addressed: 1) Thermal 2) Pressure 3) Data acquisition

8. Structures- Putting things together Introduction Payload Aerospace Electrical (1) Main Structural Bus(2) Exploded View(3) Assembled Satellite

9. Introduction Payload Aerospace Electrical System Interface Diagram

10. About CubeSat Introduction Payload Aerospace Electrical Launch Site: Baikonur Cosmodrome, Kazakhstan 3 P-PODS: each containing 3 CubeSats Integration handled by CalPoly, San Luis Obispo Constraints: 1kg, cube 10cm side Participants include universities from around the world

11. Orbital Simulation Introduction Payload Aerospace Electrical

12. Interfaces Introduction Payload Aerospace Electrical C&DH PIC 18 Power Battery Array Battery Chargers Solar Array 5V7V3.3V ADCS Thermal ControlPayload Monitoring Communications Rate Gyro X Rate Gyro Y Rate Gyro Z Heater Thermalcouple Control Switch Transceiver Power Amp Antenna Control Switch A/D Conv. Data Unregulated Bus 3V Bus 5V Bus 7V Bus

13. Electrical Engineering Introduction Payload Aerospace Electrical Power: –Lithium Ion Batteries –Power distribution layout completed Communications: –Antenna design –FSK transceiver C&DH: –Onboard data collection and computing. –Microprocessor PIC18 Typical EE board with components System Constraints –Max Bus Voltage (5-7 Volts Peak) –Operating frequency (approx. 433 MHz) –Electromagnetic interference

14. Introduction Payload Aerospace Electrical http://cubesat.slu.edu