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Team Munchies Critical Design Review

Fall 2010 Rev B. Team Munchies Critical Design Review. Daniel Sayle , Patrick Byrne, Sarah Kemp, Anne Mcleland , Katie Thompson 10/5/2010. Mission Overview .

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Team Munchies Critical Design Review

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  1. Fall 2010 Rev B Team MunchiesCritical Design Review Daniel Sayle, Patrick Byrne, Sarah Kemp, Anne Mcleland, Katie Thompson 10/5/2010

  2. Mission Overview - The purpose of the balloon satellite Astraios is to test whether or not red algae can survive the harsh environment of near space at an altitude of approximately 30,500 meters or 100,000 feet. - Possibility that our research can be applied to other extreme environments such as high mountains, the polar regions of the Earth, and the environment in which the first extra terrestrial settlements will be created when the terra-forming of Mars takes place.

  3. Overview, Ctd. • The Results of this Mission, depending on whether the samples survive the flight, can provide plausible doubt to the possibility of marine life forms in high pressure environments or even extraterrestrial ones. • Due to algal blooms supplying the majority of breathable Oxygen to life under water, the survivability of our samples will provide insight to the possibility of oxygen breathing marine life (unicellular or not) in other atmospheres or hostile environments.

  4. Hypothesis • Due to the rarity of ice specialized algae, our group is using a very common strain of red algae for the flight. This algae is relatively self-sustaining, and able to live without high amounts of sunlight or warm temperatures. Therefore, our samples are most likely to survive in a standard temperature and pressure environment. • Once pressure and temperature begin to decrease as elevation increases, we expect the chances of survival of the algae will decrease exponentially, but are not made impossible. • The most likely sample to survive the flight will be the sealed and heated one. However, there is reason to speculate the samples prone to pressure changes may still be able to complete photosynthesis functions.

  5. Requirements Flow down

  6. continued

  7. Continued

  8. Design • Science • Algae Samples- 2 Cold, 2 Warm, 2 Sealed, 2 Not Sealed (Being ordered today…should take a week to arrive) • Sealed bags are pressurized at sea level, thus testing whether pressure or temperature will kill the algae sample • The samples in the cold will be in cube offshoot(s) on top of main cube • There will also be an additional 4 redundancy samples on board • Ground samples will be tested at STP simultaneously for control group • Two HOBOs (in possession)- 1 for temperature and humidity, and 1 for pressure

  9. Mission Requirements • Extensive testing will be done to ensure that the satellite can survive flight and landing and the flight string interface will be constructed with plastic tubing, washers, and paperclips. • The heater and insulation will be utilized to maintain internal temperature. Prior to turn in, the team will weigh the satellite and modify design if it exceeds 850 grams. • Ascent and descent rates will be determined using the ultimate altitude reached by the balloon satellite and the duration of ascent and descent as determined by temperature and pressure data. • All required hardware will be accommodated into the design. • The outside of the satellite will bear contact information and a US flag. • Units will be converted to metric. • Transportation to launch has been planned. • The team will follow its outlined safety procedures and return all hardware in working condition. • The budget manager will be diligent when keeping track of expenses and receipts and hardware will be ordered with Chris Koehler’s CU MasterCard.

  10. Mass and Money Budget

  11. Functional design doc.

  12. 3d Models

  13. 3d models

  14. Test Plan • No testing has begun yet • Payload testing- • Whip Test, Drop Test, Cooler Test, Subsystems Test, Camera Test • Algae Testing- • Placing it in a cooler of dry ice to test how it will survive • Deliberately kill sample of algae to hypothesize what its appearance will be once it is dead, what temperature it died at and how long it can go with out water. • We will also study it with a microscope to familiarize ourselves with its aspects while alive

  15. Testing Schedule

  16. Expected Results • We expect that the algae sample that is pressurized and kept relatively warm will survive the extreme conditions best. The sample that is unpressurized and exposed to the extreme cold conditions is expected to fare the worst. Algae samples that did not survive are expected to exhibit a brown color and a lack of cellular movement.

  17. Team Organization Chart

  18. Biggest Worries • Air Depletion • Lack of gases for algae to survive off • UV Radiation • Avoiding the mutation and death of the algae • Temperature • Extreme temperatures may cause algae to die • Landing Impact • Limiting damage to algae samples

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