Team SST Conceptual Design Review Eric James, Vlad Soukhovei, John Marcantonio, Kara Bongiovanni, Sean Rivera 09/16/10

Mission Overview Mission Statement: The BallonSat DJDoppler shall ascend to an altitude of approximately 30km while collecting and storing telemetry in the forms of air density (kg/m 3 ) and sound waves. We will use this data in order to discern a correlation between the change in the characteristics of sound waves (i.e. frequency and amplitude) and the change in air density. In finding this correlation, we will see how these characteristics of sound waves change with air density. –Objective find a correlation between air density and sound waves –What we expect to discover: an increase in frequency a decrease in volume as air density decreases. –Why we are doing this mission: to gain data on the behavior of sound waves at high altitude gain understanding of how radios in high altitude aircraft could be improved

Design

Power Supply (Two AA Batteries) Switch 1 Camera Camera Memory Power Supply (Three 9V batteries) Switch 2 Heater Power Supply Switch 3 Weather Station Power Supply Pocket AVR Programmer Switch 4Speaker Power Supply (Two AAA batteries) Switch 5 Digital Audio Recorder

Management Team MemberTitlesSpecific Tasks SeanHead Engineer/Project Leader Programming Engineer -Makes executive team decisions -systems programming EricTesting Engineer Asistant Programming Engineer -Subsystem testing -software modification -Programming KaraHardware Engineer Asistant Management Engineer -Order/acquire all Hardware -Budget management -Team Coordination JohnManagement Engineer Assistant Manufacturing Engineer -Time management -Team Coordination (meetings, s) -Subsystem installation DanManufacturing Engineer Assistant Testing Engineer -Build satellite structures -Subsystem installation -Subsystem testing VladDesign Engineer Assistant Project Leader -Satellite design -Satellite design modifications -Assist project leader in important decisions

Management WeekMtng datesDeadlines/Tasks/Goals Week of 9/139/15, 9/17 Complete and finalize the proposal for the project due 9/16. Week of 9/209/22, 9/24 Internal design review at team meeting on 9/22 Design complete by 9/24 Prepare DD Rev A/B and CDR slides. Week of 9/279/29,10/1 Finish DD Rev and CDR slides. Complete prototype structure. Perform Cold test. (prototype structure test) Week of 10/410/6,10/8 10/5-DD Rev A/B and CDR slides turned in. Acquire all hardware Prototype designs for subsystems (circuit, thermal, power, data collection) Week of 10/1110/13, 10/15 Complete prototype testing (circuit, thermal, power, data) Begin final design testing. Week of 10/1810/20, 10/22 Complete final design testing by 10/24. Design Document Review C Week of 10/2510/27, 10/29 10/26 Bring all Hardware. 10/28 Mission Simulation Test Complete Launch Readiness Review. Week of 11/111/3, 11/5 11/02 LLR DUE. 11/05 Weigh in and TURN IN Satellite by 2:00pm DLC 270A (1) 11/06 LAUNCH!

Budget and Weights ComponentCostWeight Foam CoreProvided? HOBO Data LoggerProvided25.0 grams Batteries*? HeaterProvided100.0 grams SwitchesProvided20.0 grams Digital Audio Recorder$55.00 (after shipping)68 grams w/ batteries Portable Weather Station$ (after shipping) grams w/batteries Speaker$6.53 (after shipping)4.5 grams Canon Digital CameraProvided220.0 grams Brunton ADC-IR$34.95 (after shipping)N/A Pocket AVR Programmer$19.36 (after shipping)< 5grams Total$ * grams ** * Leaves $95.92 for batteries and spare parts. **Leaves grams for foam core and batteries.

Biggest Worries Losing power Components freezing We will get too high that the sound recorder won’t be able to pick up any sound