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Sam Bukowski, Emily Daugherty, Chris Lewin, Troy Hayes, Natalie Schaefer, Matt Vaninger
November, 2011
Mission Overview
Our Mission is to create an inexpensive space capsule out of common materials that can survive the harsh environments of space.
The three things that we are testing are:RadiationPressureTemperature
Expected vs. Actual Results
Expected Actual
Aluminum foil and rubber combo- lowest radiation
Uncovered – highest radiation
The vacuum baggy would be pressurized
The camera would take pictures for the whole flight
No radiation was detected
The vacuum baggy did not stay pressurized
The camera stopped working on the descent
Flight Recap
● No radiation was detected at 72 thousand feet
● Pressure was not kept● Pressure sensor took faulty data● Camera got too cold and shut down 15
min before touchdown
Failure Analysis The pressure sensor appeared to take faulty data in the
middle of the flight The pressure rises from approximately 20 kPa to 140
kPa in a matter of five seconds and then drops again from approximately 140 kPa to 20 kPa
Failure Analysis Cont. Cold test: the spikes in pressure correlate
with the lowest temperature readingsIt was inconclusive, the Arduino was
unaffected by the cold Vacuum test: the pressure sensor might
have been too affected by low pressure The failure was repeated by the vacuum
test
Failure Analysis Cont.
The Radiation stickers were not affected during flight, not even the outside, unexposed, controlled sticker. At 70,000 ft, the approximate radiation is 20
microsieverts per hour.The stickers must either not have been
sensitive enough to detect the radiation or was not exposed to the radiation long enough to display a reaction
Conclusions Pressure – The Vacuum Baggy did not hold
pressure, the bag was no longer sealed after landing and the pressure sensor gave faulty data.
Temperature - The insulation we used to test temperature would not be enough to keep a human heated for an extended time period at about 20,000 meters
Radiation - The radiation stickers used did not react to the radiation because it was not exposed to the 20 microsieverts per hour most likely, because it was not exposed for a long enough period of time
Appendix – Lessons Learned Start early Don't procrastinate Test more than you think you need to Use your time wisely Do A LOT of research – make sure to
get the right hardware
Appendix – Ready to Fly Again Find a more stable and sufficient
pressurized container (most likely a solid container rather than a bag)Pressurize this container with a different
Pressure sensor that can measure a pressure of approximately 30 hPa
Find a more sensitive radiation sticker/detector that will be effected over a shorter period of time - the radiation at 70,000 ft is 20 microsieverts/hour
Appendix – Message to Next Semester
Make sure that you find a strong experiment and do a lot of research on your experimental components and hardware. Work very hard and it will definitely pay off. Procrastinating is easy, but it can backfire on you very easily. Don’t let the due dates creep up too fast! Most importantly, work together as a team; teamwork is the key to success in this class. This is not an easy class, but it is fun as long as you are willing to put in the effort.