Team Six-Pack Launch Readiness Review Calder Lane, Courtney Ballard, Ian Thom, Thomas Green, Matt Cirbo, Janelle Montoya 11/29/11 Fall 2011 Rev A

Mission Overview BalloonSat Helios measures the efficiency of wireless energy transmission using a laser and solar panels.

Design Overview Two Foam Core Structures Top Circuit: Nine 3v 25mA Flexible Solar Panels 3.3 volt Li-ion battery 50 mW red laser Bottom Circuit: 3v 22mA Flexible Solar Panel Attopilot Current/Voltage Sensor Arduino Uno and SD shield

3V 25mA Solar Panels (9) 3V 22mASolar Panel 50mW 650nm Laser Battery 9-volt Battery Arduino Uno Microprocessor Micro SD Shield Micro SD Card AttoPilot Current/Voltage Sensor HOBO Thermometer Barometer Hygrometer Li-Ion Battery Switch Rechargeable Battery SD CardCamera Switch 9-volt Battery (3) Switch Heating Circuit Switch

Flight Results Sun rising, not hitting bottom solar panel Sun hits panel, drastic voltage increase Satellite enters troposphere Burst and wild motion

Flight Results Launches Enters troposphere Burst Exits troposphere

Flight Results Launches Enters troposphere Burst Exits troposphere

Post-testing Arduino shuts off due to low temperature Satellite removed from the cooler

What failed and how? Arduino – Stopped sensing Heater – Lost power What tests were done to confirm this? Second cold test Battery whip test How has it been fixed? Arduino would have its own heater The heater batteries would be attached better Failure Analysis

Conclusions Wireless Energy Transfer –Possible, just inefficient using lasers and photovoltaics –Much higher efficiencies could be achieved using microwaves –Beaming focused radiation is an effective means to transport electricity –However, changing EMR back to electricity is less efficient

Conclusions Power Generating Satellites –Data indicated that the sun at higher altitudes does produce more energy –Very possible to launch power generation satellites into orbit –Orbiting solar farms could potentially be far more efficient using different EM frequencies

Appendices Lessons Learned Ready to Fly Requirements Mass and Money Budgets Message to Next Semester

Lessons Learned Not done at launch –Still work to do after More solar panels on top Heater in bottom box –Prevent Arduino failure One box instead of two Control solar panel

Ready to Fly Stored in upward position –Larger box on top, smaller box below How to activate payload: –Camera button –Laser switch: ON –Solar panel switch: ON –Heater switch: ON –Arduino switch: ON

Requirements

ItemCostWeightProvided by/ Bought from HOBO DataloggerProvided30 gramsGateway to Space Class Foam Core/Aluminum Tape Provided170 gramsGateway to Space Class Canon SD780 ISProvided130 gramsGateway to Space Class HeaterProvided100 gramsGateway to Space Class Flight/Test batteriesProvided and bought with personal funds 150 gramsGateway to Space Class Flight TubeProvided10 gramsGateway to Space Class SwitchesProvided20 gramsGateway to Space Class Dry IceBought with personal fundsNot launchedSupermarket Arduino Uno$ gramsSparkfun AttoPilot Voltage and Current Sensor $ gramsSparkfun Micro SD Shield$ gramsSparkfun Micro SD CardDonated<1 gramThe Lane Family Powerfilm 3V 25mA Flexible Solar Panel (9) $ gramswww.solarhome.org Powerfilm 3V 22mA Flexible Solar Panel (1) $6.753 gramswww.solarhome.org 50mW 650nm Laser$ gramswww.ankaka.com Carbon Tubing$ gramsdragonplate.com 3.7 Volt 2600 mAh LG Li-Ion Battery $ gramswww.megabatteries.com Shipping and Handling$35.63 Total$ grams*

Message to Next Semester Pick a challenging, but achievable experiment Be prepared to work outside of class Work hard, but don’t tire yourselves out pre- launch Make time for programming troubleshooting Know data conversion factors Make a schedule, and stick to it Do HW #7 ahead of time