UPR-R(river) P(rock)

University of Puerto RicoRío Piedras Campus

February 17, 2012

• 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.

Mission Overview

Functional Block Diagram

Power2x9V Supply

Batteries

G-Switch

RBF (Wallops)

5V Regulator

X / Y Accelerometer

Z Accelerometer

Temperature Sensor

AVR Board

AirCore Board

Flash Memory

6 channel ADC

Control Circuit (MOSFETS)

AVR Microcontroller

ADC

Intake Solenoid Valves

Bernoulli Exhaust At the rocket

Intake Solenoid Valve

Nano-Filters Sequential Controlled

Valves

Exhaust Solenoid

Valve

Data

Airflow

Power

Interface

RAM Air Intake from Outside of the

Rocket

Gas Semiconductor

Sensor 5

Gas Semiconductor

Sensor 3

Gas Semiconductor

Sensor 1

2x9 V Supply

Gas Semiconductor

Sensor 2

Gas Semiconductor

Sensor 4

Gas Semiconductor

Sensor 6

Faculty Support:

Team Members

Vladimir Makarov

Geraldo Morell

Gladys Muñoz

Benjamin Bolaño

Oscar Resto

• Management• Management• Management

• Management

Student Management:

Team Leader: Desiree Rodriguez

Secretary: Ivan Rivera

Schedule Manager: Jose Castrillo

Technical Support: Orlando X. Nieves

Organizational Chart

Rocksat C 2012Team Organization

Ivan Rivera (Secretary)

Alvaro Gracia(Team Member)

Sergio Alegre(Team Member)

Lizmar Cerezo(Team Member)

Pedro MeléndezSoftware Technical

Leader

Jose Castrillo (Timekeeper)

Elmo Rodriguez(Team Member)

Jose Iglesias(Team Member)

Nina Cordero(Team Member)

Gladys Muñoz(Faculty Support)

Desiree Rodriguez (Team leader)

Jaime Vaquer(Team Member))

Jose Ruiz(Team Member)

Luis Rosario(Team Member)

Samalis SantiniTeam Member

Sybelle Serrano (Team Member))

Oscar A. Resto(Team Member)

Beatriz Peraza(Team Member)

Joel Delgado(Team Member)

Oscar Muniz(Team Member)

Oscar Resto (Mentor/PI)

Graciela Rivera (Team Member)

Nicolle Canales(Team Member)

Camille Lupianez(Team Member)

Marianne Marin(Team Member))

Team Picture

Payload Assessment

• 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.

Schedule Update

Subsystem Overview

• Layer #1: Semiconductor Sensors’ Board• Layer #2: First and second Battery Filters’

Subsystem• Layer #3: Third Battery Filter and Manifold’s

Sensor Subsystem• Layer #4: Interface and AVR Board’s Subsystem• Layer #5: Power Plate

Semiconductor Sensors’ Board Subsystem (Layer #1)

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

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

Interface and AVR Boards’ Subsystem (Layer #4)

Battery Plate Subsystem (Layer #5)

• 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.

AVR Subsystem Update

AVR Subsystem Test

Two out of three computers worked perfectly

The third one needs some minor repairs

Results

• 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.

•

Plan for Subsystem Integration

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.

• 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).

Conclusion