UPR-R (river ) P (rock )

1. UPR-R(river) P(rock) University of Puerto Rico Río PiedrasCampus February 17, 2012

2. Mission Overview • Compare our results with RiverRock 2009 and 2010 findings. • Measure selected gases in near-space conditions. • Survey inorganic and organic aerosols in near-space conditions.

3. RAM Air Intake from Outside of the Rocket Functional Block Diagram Power 2x9V Supply Batteries Gas Semiconductor Sensor 6 Exhaust Solenoid Valve RBF (Wallops) AVR Board Gas Semiconductor Sensor 5 G-Switch Flash Memory 5V Regulator Gas Semiconductor Sensor 4 Nano-Filters Sequential Controlled Valves Z Accelerometer Gas Semiconductor Sensor 3 AVR Microcontroller X / Y Accelerometer ADC Gas Semiconductor Sensor 2 Intake Solenoid Valve Gas Semiconductor Sensor 1 Temperature Sensor 2x9 V Supply Bernoulli Exhaust At the rocket 6 channel ADC Control Circuit (MOSFETS) Intake Solenoid Valves Data Airflow Power Interface AirCore Board

4. Team Members • Student Management: • Vladimir Makarov • Geraldo Morell • Gladys Muñoz • Benjamin Bolaño • Oscar Resto Faculty Support: • Team Leader: DesireeRodriguez • Secretary: Ivan Rivera • Schedule Manager: Jose Castrillo • Technical Support: Orlando X. Nieves • Management • Management • Management • Management

5. OrganizationalChart Rocksat C 2012 Team Organization Gladys Muñoz (Faculty Support) Oscar Resto (Mentor/PI) DesireeRodriguez(Team leader) Ivan Rivera (Secretary) Jose Castrillo (Timekeeper) Pedro Meléndez Software Technical Leader SamalisSantini Team Member Alvaro Gracia (Team Member) Elmo Rodriguez (Team Member) Oscar A. Resto (Team Member) Nicolle Canales (Team Member) Jose Ruiz (Team Member) Sergio Alegre (Team Member) Jose Iglesias (Team Member) Beatriz Peraza (Team Member) Camille Lupianez (Team Member) Luis Rosario (Team Member) Lizmar Cerezo (Team Member) Nina Cordero (Team Member) Joel Delgado (Team Member) Oscar Muniz (Team Member) Marianne Marin (Team Member)) Sybelle Serrano (Team Member)) Jaime Vaquer (Team Member)) Graciela Rivera (Team Member)

6. Team Picture

7. Payload Assessment

8. Schedule Update • As of February 14 we are on time with our schedule, even though we haven’t done the semiconductor sensor tests scheduled for February 7. We plan on doing this on February 21. • We tested the computer and interface.

9. Subsystem Overview Layer #1: Semiconductor Sensors’ Board Layer #2: First and secondBatteryFilters’ Subsystem Layer #3: ThirdBatteryFilter and Manifold’s Sensor Subsystem Layer #4: Interface and AVR Board’sSubsystem Layer #5: PowerPlate

10. Semiconductor Sensors’ Board Subsystem (Layer #1)

11. First and Second Battery Filters’ Subsystem (Layer #2)

12. Third Battery Filter and Manifold’s Sensor Subsystem (Layer #3)

13. Interface and AVR Boards’ Subsystem (Layer #4)

14. Battery Plate Subsystem (Layer #5)

15. AVR Subsystem Update • We have successfully tested the AVR computer. • We have two computers, one for flight and a spare one. They both work perfectly. • We also have a third one that need minor repairs.

16. AVR Subsystem Test

17. Results Two out of three computers worked perfectly The third one needs some minor repairs

18. Plan for Subsystem Integration • We are going to work with each subsystem separately to ensure its functionality. • We are going to clean and assemble the subsystems in their proper layers after the disassembly of the payload.

19. Lessons Learned • - While testing the AVR computer we realized that we weren’t connecting the cables correctly. Therefore we couldn’t program the computer. That problem has been solved.

20. Conclusion • We are on schedule and working to have everything done. • There is a team training in the usage of the Scanning Electron Microscope to analyze the samples of RockSat 2009-2010 and 2011-2012 (upcoming flight).