Colton Hall, Brendan Lee, David Thomas,Zak Collins, Eli Nelson, Devin Bazata
November 1, 2011
Team #7The Wright Stuff
Launch Readiness Review
Mission Overview
• Send up petri dishes containing bacteria
• Analyze the effects of temperature, pressure, and UV radiation on the bacteria
• Attempt to capture bacteria in tropopause in a sterile petri dish attached to a servo
Design Overview
Parallax Standard Servo Arduino Uno
• Arduino controls servo to deploy bacteria collection dish
• One petri dish sealed and in heated environment• One petri dish sealed and heated but exposed to UV• One petri dish unsealed, unheated, and exposed to UV
Bacteria Tests
• Bacteria confirmed to be "non-pathogenic"
• Bacteria incubated since last Wednesday
• Difficulty in having bacteria actually grow during incubation
• Sterile petri dish was also incubated, and it yielded no bacteria
Predicted Results
• The bacteria in the two petri dishes exposed to the environment will not survive.
• The bacteria in the petri dish housed inside the satellite will survive.
• We will be able to retrieve bacteria from the tropopause.
Biggest Worries
• Contamination of the Collection Dish
• The reliability of the seal on the petri dish controlled by the servo motor.
• Properly separating variables; maintaining a constant temperature and a constant pressure inside the dish, etc.
Requirement Compliance
Requirement Requirement Met
Mission: test how bacteria survives in near space
Four petri dishes containing E. Coli
Mission: capture bacteria in tropopause
Sterile petri dish attached to servo to collect bacteria
Measure temperature and humidity
HOBO datalogger flown in BalloonSat
Control the servo for deployment in tropopause
Arduino Uno program will control the servo
Heat interior and two petri dishes to temperature of -10 degrees Celsius
Heater system included