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CubeSat DeOrbit SystemTREVOR JACKSON JOSHUA BARHAM TROY TARNACKIJOSEPH MCNAMARA TIMOTHY LYNCH JOE POWELL AMANDA SOKOLSKY MACKENZIE WEBB
System Functionality Overview
Stowed Deploying Deorbiting
Wireless
ELECTRONICS
• Software
• Iterative Design
• Circuit Board Fabrication
• Testing
Cutting Wire Testing
MATERIALS & METHODS
• Energy loss into baseplate
• Kapton and graphite thermal gasket ineffective
• Non-Conductive, high temperature insulators
Film
MATERIALS AND CONSIDERATION
• Mylar film
• No longer pressurized
• Vacuum Testing
Inflatable
• 5 mil Polyethylene Mylar
• Mylar inflatable subjected to 100 millitorr pressure.
• Vacuum packed test balloon successfully folded in baseplate.
• Two Sphere designs – Gore (Orange Slices) and Soccer Ball Pattern.
MATERIALS AND DESIGN
Tether/Alternate Baseplate
• SMA Latch
• Spring loaded door
• Four point tether
• Spring assisted deployment
Thermal Analysis
• Extensive orbit based thermal calculations ready for verification at NASA Langley Research Center
• Conclusive evidence of successful sublimation of benzoic acid
• Systems Tool Kit (STK) will also assist orbit thermal model
Alternative Heating
TITLE
• Assuming solar heating will not sublimate the benzoic acid
• Using a E-6 heating element to help start the sublimating process
Benzoic Acid
APPLICATION METHODS
• NASA• Acetamide w/ melamine dye• Benzoic Acid w/ melamine dye• Pyrazole w/ melamine dye
• ODU• Benzoic Acid• Not worried about sublimation rate
• Apply it within the balloon• Keep the acid within the balloon during
vacuum testing• Even coating
Vacuum testing at NASA Langley Research Center
System Iterations
Process Chart
Questions?