Transcript Team 07 LRR 2011 - Colorado Space Grant Consortium

Team #7
The Wright Stuff
Launch Readiness Review
Colton Hall, Brendan Lee, David Thomas,
Zak Collins, Eli Nelson, Devin Bazata
November 1, 2011
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
Design Overview
Cold Test
Test begins
Cooler opened to observe
servo position
Test ends
Vacuum Test
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
Structural Tests: Whip, Stair, Drop
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
Mission: test how bacteria
survives in near space
Requirement Met
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