RockHydro

1. RockHydro Northwest Nazarene University Advisor: Dr. Lawrence Chad Larson Ben Gordon Seth Leija David Vinson Zach Thomas Drew Johnson Individual Subsystem Testing Report

2. Table of Contents • Team Pictures • Mission Overview • Schedule • Changes Since CDR • Superhydrophobic Subsystem • Electrical Subsystem • Subsystem Integration • Lessons Learned • Conclusion

3. Team Picture!

4. Advisors Dr. Lawrence Dr. Parke

5. Mechanical Chad Larson Ben Gordon

6. Mechanical Zach Thomas

7. Electrical Seth Leija Andrew Johnson

8. Electrical David Vinson Dale Wilson American Semiconductor Inc.

9. Team Organization Advisor Dr. Dan Lawrence Advisor Dr. Parke American Semiconductors Dale Wilson Superhydrophobic Electrical David Vinson Seth Leija Drew Johnson Mechanical Ben Gordon Chad Larson Zach Thomas

10. Mission Overview • Study the feasibility of using Superhydrophobic materials in the presence of high acceleration and vibrations for possible use on space missions. • The material will be tested under an electron microscope pre and post flight to determine the condition of the surface. • It is expected that the material will survive the flight and still be superhydrophobic.

11. Mission Overview • Test Flexfet technology • Viability in high radiation environment • Test FleX technology • Testing of hardware in high G environment • Return useful data to ASI • Provide low cost space launch opportunity to ASI

12. Schedule • Superhydrophobic: • Receive plates from Oakridge: Feb 15 • Begin building aluminum enclosure: Feb 20 • Begin building polycarbonate enclosure: Feb 20 • Complete building and begin testing: Feb 27 • Study SH with electron microscope: Feb 20- Feb 27 This is slightly behind where we had planned due to our design change and we are waiting for our plates from Oakridge to arrive.

13. Schedule • Electrical: • Get socket in mail: Feb 18 • Finish Arduino code: Feb 20 • Testing: Feb 22 • Integrate with g-switch: Feb 28 • Run Full Flight Test: March 4

14. Changes Since CDR • The biggest change since the CDR is the removal of the “donut” which has been replaced with two aluminum boxes. This change was done because the box allows for our experiment to be looked at under an electron microscope. The details of this change are in the slides below. • Also, the PCB is no longer needed.

15. Design Old New

16. Superhydrophobic Subsystem • Right now, the plates that are coated with different superhydrophobic materials are being shipped from Oakridge National Laboratory and should arrive later this week.

17. Subsystem Overview • Superhydrophobic/Mechanical Subsystem • Chad Larson • Electrical Subsystem • Seth Leija

18. Superhydrophobic Subsystem • Once the plates arrive, they will be looked at under an electron microscope at Boise State University. This will allow us to see what the material looks like before and after the flight to determine if it survived the rocket launch

19. Superhydrophobic Subsystem • The new containers for the superhydrophobic plates are made out of a solid piece of aluminum. The superhydrophobic plate will slide into place inside the container and then the box will be sealed with an O-ring and screwed down. Aluminum Box

20. Aluminum Box Slits that hold the SH Plates O-Ring Screws on the outside of the O-ring Solid Aluminum Box

21. Polycarbonate Box • On the outside of the Aluminum box, will be a box made of polycarbonate that is made using screws and sealed with a silicon based sealant. Polycarbonate Box

22. Electrical Subsystem • Hardware • Hardware has been assembled • Preliminary tests have been successful • Successfully writes inputs and outputs to txt files (ASCII) • Currently awaiting socket • Certain errors have occurred when saving to an SD card • Files are deleted on ejection of SD card • Software • Preliminary code to check for errors is working • Takes input vectors in Matlab and outputs a vector containing error positions • Currently does not open files directly • Have not yet determined the best way to display errors

23. Electrical Subsystem Inverter Chip Test Arduino with Shield

24. Data Collection • Testing Hardware • Arduino Mega 2560 • AdafruitDatalogger Shield • Stored on SD memory card • Reasoning • Expandability • Ease of use • User Community Resources • How • Outputs two text files • Contains input data and output data

25. Data Analysis • Using Matlab • Ease of use • Graphing • How • Reading data from files • Analyze expected vs actual data • Output pertinent information

26. Block Diagram Power Data G-Switch Power Supply Clock Arduino Clock ASC Chip (Unpackaged) Microcontroller SD Card ASC Chip (Packaged)

27. Code Matlab Arduino

28. Subsystem Integration • The two different experiments integration should not be too complex. The two boxes will be at the bottom of the canister, and then the electronics will be on a plate directly above it.

29. Lessons Learned • Your first design will NOT be your final design. • Focus on trying to finalize design early on. • Be flexible • Splitting up the work into different “teams” is very beneficial…..as long as there is good communication. • Be prepared to error check your code!

30. Conclusion • Superhydrophobic Plates are arriving this week! • Building Enclosure for material is main goal. • Electrical System is going smoothly. We gave a presentation to American Semiconductor, Inc. this last week!

31. Questions??