Vlad Soukhovei, John Marcantonio, Kara Bongiovanni, Eric James, Sean Rivera, Daniel Flora 11/30/10 Fall 2010 Final

 Ascend to 30 km, collecting data regarding temperature, air density, sound  Compare air density to sound to confirm expected relationship  Compare amounts of Carbon dioxide with sound data  Hypothesis: air density goes down=frequency increases, amplitude decreases  Large amounts of carbon dioxide result in new recorded frequencies  Why? Use sound as means of detecting gas

l Launch l Burst Recovery

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Launch 30,000 ft Burst

Post Flight CO 2 Test

 MICROPHONE WASN’T TURNED ON.  Temp Probe  Brunton temp  Post-test  Next Flight:  New temp probe  Don’t make same mistake twice.

 Teamwork is important  Work ahead  WE FAILED TO TURN EVERYTHING ON.  Never again  Correlation between CO 2 undiscernable with further ground testing  Engineering involves failing

 Smaller, warmer BalloonSat  PRESS DA BUTTON!  Increase amplitude of speaker  Press just one itty bitty button  Test HOBO more  Test for a gas that is more prevalent than carbon dioxide

 For storage, batteries in weather channel should be taken out  Isolate speaker  For flight, TURN ON and insert microphone and weather channel  Seal top panel  Flip speaker switch, heater switch  Paper-clip the camera switch

 Final Budget: $  Final Weight: 990 grams

RequirementResult BalloonSat internal temperature shall remain above -10 degrees Celcius Unknown BalloonSat shall not exceed 850 gramsBalloonSat is currently overweight (app. 940 g) Budget shall not exceed $300.00Final Budget : $ Materials/Components (HOBO, foam core, temp probes, flight string/tube, camera, scientific experiment, flag,heater) All necessary components are accounted for