1. S^3 Launch Readiness Review
Andrew Broucek, Jacob Haynes, Sara Monacelli, Tiffany Monroe, J. Patrick O’Brien, Madison Wiebe
November 2nd, 2009

2. Mission Overview Two types of Solar Cells Four of each type
Four Photodiodes

3. Design Overview

4. Test Results
Successful
Mission
Freeze
Structural

5. Mission Test (1/3)

6. Mission Test (2/3)

7. Mission Test (3/3)

8. Freeze Test (1/2)

9. Freeze Test (2/2)

10. Structure Test (1/4)

11. Structure Test (2/4)

12. Structure Test (3/4)

13. Structure Test (4/4)

14. Flight Result Expectations
As altitude increases, so will the light intensity and the output of our solar cells.
Monocrystalline > Polycrystalline

15. Biggest Worries
Hardware Malfunction
Solder

16. Requirement Matrix How we will meet the requirements:
1. Design shall have additional experiments that collects science data and teams that analyze this data.
In the BalloonSat the team is going to be conducting and experiment using solar cells. Th group is going to test what type of solar cell (monocrystaline or polycrystaline) preforms the best at different altitudes and how much energy we can collect from both types at different altitudes.
2. Analog sensor inputs should not exceed 5V
The team is using any and all necessary resistors with our multiplexer to ensure that we do not exceed 5V going into our AVR board.
3. After flight, BallonSat shall be turned in working and ready to fly again.
The team has purchased extra parts to ensure that, even if we have hardware that breaks, we and able to repair the BalloonSat and turn it in in working order.
4. Flight interface tube shall be a non-metal tube through the center of the BalloonSat and shall be secured to the box so that it will not be pulled through the BalloonSat or interfere with the flight string,

17. Requirement Matrix
The tube for the flight interface is non-metal and we are going to make sure that it is secure in our Sat, so nothing go wrong during flight with the flight string and tubing.
5. Internal temp of the BalloonSat shall remain above -10 degrees C during the flight.
The team is including a heater in our BallonSat and we have made sure that we have space for it. We are going to use this to control the heat in the BalloonSat.
6. Total weight should not exceed 850 grams.
The team added up the weights of all the different hardware in our Sat. and made sure that all the parts do not exceed 850 grams.
7. Each team shall acquire ascent and descent rates of the flight string. ?
8. Design shall allow for a HOBO
The team has set aside space in the BalloonSat and we have accounted for any weight that the HOBO might add to the mission.
9. Design shall allow for external temperature cable.

18. Requirement Matrix
The team has left space in our design so we can include an internal temp cable if necessary.
10. Design shall allow for an Canon A570IS Digital Camera
The team left and planned for a space in the inside of the BalloonSat that will be for the digital camera.
11. Design shall allow for an AVR microcontroller board and batteries weighing 150 grams including batteries and 20x80x110 mm. Dimensions do not include 2 x 9v batteries.
The team has accounted for both space and weight of the batteries and the AVR when we did our design and measurements.
12. Design shall allow for an active heater system weighting 100 grams with batteries and is 10x50x50mm. Dimensions do not include 2 x9v batteries.
The team has planned for both the dimensions on the BalloonSat and for the weight of the heater in our calculations.
13. BalloonSat shall be made of foam core.
The team is building S^3 out of foam core.
14. Parts list and budget shall include spare parts.

19. Requirement Matrix
The team has made sure to order spare parts of anything that might get broken in the process of flight and testing.
15. All BalloonSats shall have contact information written on the outside along with a US flag.
Name and location of the school and Space Grant are going to be on the outside of the box.
16. Proposal, design, and other documentation units shall be in metric.
The measurements on the proposal are in metric units.
17. No one shall get hurt.
Safety precautions will be made to ensure the safety of everyone.
18. All hardware in the property of the Gateway to Space program and must be returned in working order at the end of the semester.
The hardware that is borrowed from Gateway to Space will be kept out of the tests to ensure that they are protected and can be returned in working order.
19. Teams must keep detailed list of all parts purchased and recites shall be turned in within 48 hours of ordering.
The team is keeping a record of all the parts ordered and have been turning in the recites on time.
20. Nothing alive will be permitted in the payload.
The experiment does not include any live parts or animals on the payload.