1. O2n Cloud Nine Critical Design Review
Fall 2010 Rev A
O2n Cloud Nine Critical Design Review
Lea Harris, Megan O’sullivan, Ben Woeste, Brodie Schulze, Caitlyn Cooke, Ian Barry, Sebastian-Johannes Lorenz

2. Mission and Objectives
The Mission Objectives of Cloud 9:
Construct a BalloonSat by 10/21/2010 that will reach altitudes of 30km
We will measure the amount of elemental oxygen in the air using an oxygen sensor
Take 3D images of surrounding clouds
Measure the external relative humidity in the atmosphere

3. Mission Requirements Objectives:
Collect Relative humidity to about 30,000 meters
Collect oxegen levels to about 30,000 meters
Collect temperature data to about 30,000 meters
Take stereoscopic images.

4. Mission Requirements Requirement:
Humidity sensor with power to keep it running for about 135 minutes
Arduino board to collect humidity sensor data and Its power.
Oxygen sensor , power to run it, HOBO to collect data.
Eternal temperature probe and hobo,
Camera with strategically placed mirrors, memory, Image processing.

6. Hardware Oxygen Sensor donated by In-Situ Inc.
HOBO provided by Gateway to Space class
Camera donated by Gateway to Space class
Mirrors bought from Home Depot
Relative humidity sensor from Sparkfun Electronics

7. Hardware Arduino Pro board from Sparkfun Electronics
1 2Gb memory card donated by Gateway to Space class
6 nine-volt batteries provided by Gateway to Space class
4-20mA cable from HOBO Onset Corporation
Plastic flight tube provided by Gateway to Space class
Foam core provided by Gateway to Space class

8. Hardware Aluminum tape provided by Gateway to Space class
Washers and bolts for flight tube and rope attachment provided by Gateway to Space class
Heater provided by Gateway to Space class
Insulation provided by Gateway to Space class
Switches provided by Gateway to Space class

9. Functional Block

10. Item
Cost
Subtotal
Purchase Location
O2 Sensor
~$2250 Donated
$ 0.00
In-Situ Inc
4GB memory card
$ Donated
Brodie Schulze
Glass cutter
$ 3.79
$ 3.79
Home Depot
Mirror
$ 9.99 $
4 to 20 amp cable with built in resistor
$ 34.00 $
Onset
Arduino Pro V/8MHz
$ 19.95
$ 69.73
Spark Fun
Humidity Sensor - HIH-4030 Breakout
$ 16.95
$ 86.68
Total
 $ 86.68
Weight (g)
Subtotal (g)
Camera
132
HOBO 30
162
Heater
100
262
Oxygen Sensor
150
412
Additional power
228
640
Foam Core 60
700
Aluminum tape
5>
705
Flight tube 5
710
Mirrors 50
760 3
763 10
773

12. Tests Drop Test Whip Test Cooler Test Camera Test Sensor Test
Full Mission

13. Expected Results
With our Humidity Sensor we expect to find an inverse relationship between humidity levels in the atmosphere and elevation.
From the 3 mirrors we expect to get a split view photo, and be able to digitally cut them and use an animated .gif to give depth
With our Oxygen sensor we expect to find an inverse relationship between oxygen levels and elevation.
Using other team’s sensor data we expect to find an inverse relationship between carbon dioxide levels in the atmosphere and elevation.

14. Team Organization

15. Biggest Worries No clouds for flight date Satellite Too heavy
Mirrors don’t stay in position
Learn to program Arduino Board and Camera