UPR-R (river ) P (rock )

1. UPR-R(river) P(rock) University of Puerto Rico Río PiedrasCampus April 24, 2012 FMS Report

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. Mision Overview • Although our payload has already been flown, this time we are a little behind schedule with the full integration test. We have tested the subsystems individualy for example: • Software • AVR • Batteries This are the most important test for us. We priotize this because they are the most important subsystems and the most difficult to assure for flight.

4. Mechanical/Structure • Since our payload has already flown, all of our subsystems integrate perfectly. • In the next slides we will discuss the test done for each subsystem independently. • We are not making any modifications since we are not making any changes in our design.

5. Mechanical/Structure • Clean the plastic tubing • Reassemble battery filters (new filter and new organic adhesive tape) • Reassemble plates

6. Electrical/CDH • The AVR flight computers are working properly. We have two of them. • We confirmed that the AVRs worked properly because all the AVR functions(arm, disarm, retrieve data and read data) worked. • The run time was a flight simulation (6 minutes) • No, we haven’t tested the boards and sensor combined. • Rewire battery to the rest of the payload.

7. Power • We tested the batteries: • We made sure the voltmeter worked properly • We separated the batteries in two groups: the 12.3 V and the 13.6 V (an average volt is 13 V) • After, we measured each battery separately. Each one should have approx. 1.600 V • Those that passed the test were marked with a black tape. • Change three bad batteries from the whole lithium battery group.

8. Power cont.

9. Software • The software is written. • We tested the computer software with the AVR. The test worked as planed, the data collection and reading went well. • The sampling rate is 50 milliseconds. • There are no actions items to do.

10. Interfaces Summary • We have a fully functional integrated system but we haven’t tested the payload as a whole. • For the moment we haven’t planed for any modification. • We know that the subsystem work properly but it’s still to be integrated and tested. • We have no major issues. We are positive that any problem can be resolved. We don’t believe that we will fall behind schedule because all subsystem are constructed.

11. Test Summary • All the test we conducted worked properly. • All the electronic we tested communicated successfully. The software worked with the computer. The sensor still need to be tested. • We have no changes still.

12. Action Item Summary • May 1 – test the fully integrated payload/have already worked with final details of each subsystem • May 8 – work with minor details from the payload and full flight simulation. • May 15 – start running full simulations without any problems until the launch date.

13. AVR Subsystem Test

14. Battery Test

15. Scanning Electron Microscope Three students of our team were trained to examine the samples of the 2010 RockSat C flight. This students are officially authorized and registered users of the SEM (Scanning Electron Microscope), they can use the microscope without supervision. They obtain the ability to analyze the samples by electron microscopy TEM/ STEM/ EDS for nanoscale imagine and elemental identification of inorganic aerosols collected during the last flight on ultra thin holey carbon TEM grids. The students are working Monday, Wednesday and Fridays from 10:30 to 12:30

16. Scanning Electron Microscope • This is an example of how we are going to present the new findings for the 2010 flight.

17. Scanning Electron Microscope • Pictures of the trained students working on the SEM

18. Scanning Electron Microscope • Pictures of the Samples and X-Ray Fluorescence analysis.

19. High altitude (40 to 140 km) Atmospheric sample collection and characterization of organic and inorganic aerosols and H2, NH3, NOx, NO2, and H2S gas Measurments. • Fernando Batista, Xavier Blanco, Jonathan Camino, Giovanni Colberg, Yanina Colon, • Maria P. Matta, Rafael Rios, Vanessa Rivera, Sheila Roman, Vladimir Makarov, • Geraldo Morell1, Benjamin Bolaño2, Gladys Munoz1, and Oscar Resto • University of Puerto Rico, Department of Physics, College of Natural Science, San Juan PR 00931 • 1 Puerto Rico Space Grant Consortium, Resort Center for Sciences and Engineering, San Juan PR 00931 • 2 University of Puerto Rico, Medical Sciences Campus, San Juan PR 00936 • Abstract • A payload was constructed with the purpose of collecting aerosol and measuring gases of NH3, NOx, NO2, H2S and H2 at altitudes of 40 to 140 km and allocates them in the respective altitudes layers in the neighborhood of NASA Wallops Flights Facilities in VA. Another part of the payload experiment was the collection of aerosols particulate the nanometric polymers battery filters of 1000, 450, 200, and 100 nm pores during the actual path of the vehicle. The payload experiment was designing and program in a canister that contains a series of valves, battery filters and semiconductor sensors interconnected via a Teflon tubing that work in series an in a sequential order and timing to collect the aerosol samples and analyze the gases by semiconductor gases sensors during flight. To keep these sequences of events timings and measurements of the gases analyzed during flight an AVR flight computer was used to store the data at the flash memory. The AVR flight computer was assemble and flight tested in a rocket at the RockOn 2008 workshop. Post flight analysis was performed on the collected aerosols by TEM imaging and X-Ray Fluorescence for inorganic elemental analysis as well as particle size distribution and optical microscopy identification on the organic samples. Some of the collected sample images are shown, inorganic elemental results, and particle size findings are tabulate. This work was accomplished by Natural Sciences students that fulfill the project of RockSat 2009 from the NASA Space Grant Consortium. • (See attachment in email for the full paper)

20. Conclusions • We need to run the test of the fully integrated payload to confirm that is fully functional. • We believe that we are not going to have any problems and that our payload will work perfectly.