Transcript Team_02_LRR
Team Mate Launch Readiness Review Jason Schelz, Will Hakes, Emma Mossinger, Ethan Long, Brendon Barela, Amelia Weller 11/02/10 Mission Overview • The sun releases elevated levels of magnetism and radiation during cycles of increased activity, erupting solar storms into space • Sun spots send charged particles into space in the form of a solar wind, and some of these charged particles encounter Earth and Earth’s atmosphere • The hypothesis of this team is that the Earth’s atmosphere experiences increased amounts of ultraviolet radiation due directly to the solar flares and other solar activities • The radiation could interfere with artificial satellites’ ability to send and receive data Design Overview Tests • Cold Test – The original cold test consisted of several suspending the balloon-sat within a cooler filled with several pounds of dry ice – A new test in which dry ice is placed inside a freezer with the balloon-sat has been planned for 11/2/10 or 11/3/10 • Camera – The camera was tested for two hours; however one hour into the testing the camera shut down because the batteries had died – The autostart program on the camera had malfunctioned because the camera switch was set to “play” rather than “record” Tests • Hobo – The hobo was breathed upon (to change humidity) and held by the hand (to change heat) – After all of these tests, it was plugged into a computer in order to confirm the acquisition of data. • LEDs – The LED’s attached to the bread board under a UV black light for approximately ten minutes, then placed inside of a drawer – The test results showed that the LED’s and the Arduino program can measure UV radiation – When tested during the mission simulation test, the LED’s in the balloon-sat displayed no readings – A re-soldering of the shield remedied the issue UV LED Test UV source (black light) removed Structure Tests • Swing Test – The prototype was loaded with approximately 760g of rocks to simulate the stresses of swinging during flight – The prototype was swung violently at arm’s length for by three team members – The structure showed no signs of damage, and none of the rocks had moved inside • Stair Test – The prototype was bowled and kicked down three flights of stairs in order to simulate being dragged across the ground upon landing – Two corners had dented after the first test and no further damage was caused to the structure in the two following tests Structure Tests • Drop Test – The drop test was performed from approximately nine meters three times. – The first drop thoroughly dented a corner, the second drop broke a seam, the third put a crack in the foam core approximately eight centimeters in length, and the straws faired incredibly well Expected Results • The data should reveal an increase in the level of radiation in the atmosphere • Resulting from the upward trend in the solar cycle • Voltage data from the LEDs should display a gradually increase in amount of activity with increased altitude until drastic fluctuations occur in and around the ozone layer. Biggest Worries • Failing to keep the temperature above -10 degrees Celsius • Heater melting internal components of the Balloon Sat • LED wiring failing Requirements Flow Down