Aggies Invent - Team CleanSweep
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Transcript of Aggies Invent - Team CleanSweep
Team Clean Sweep
Clean SweepersName Year Major
Joshua Vogt Junior Industrial Distribution
Katie Schneider Sophomore Aerospace Engineering
Kanika Gakhar Sophomore Aerospace Engineering
Andres Diaz Senior Electrical Engineering
Benjamin Swain Freshman Mechanical Engineering
Yuki Oji Junior Electrical Engineering
“There is no problem so bad that you can’t make it worse.”
– Chris Hadfield
Need statement
Device to circulate throughout the ISS and collect stray pieces of Foreign Object Debris
Needs and ConstraintsNeeds Constraints
Small, unobtrusive, and inconspicuous Should not create additional debris
Ability to circulate freely in microgravity Should not weigh more than 100 g
Ability to withstand wall impacts at 5 ft/sec and un-calibrated astronaut swats
Should not have rough edges or sharp corners
Material that will gather the FOD and is renewable Should not conduct electricity
Easy attachment and removal of the attractive material
Should be 3D printed in a single run within a 10x10x14 space
Easy to maintain
Engineering SpecificationsRequirements Metrics Numerical
TargetsLightweight and unobtrusive Minimum Weight of entire device <100 g
Comply with 3D Printing restrictions Minimum size (length x width x height) of all components
< 10 x 10 x 14 cm
Ability to withstand wall impacts and astronaut swats
Minimum yield strength of material >42 Pa
Easy to renew attractive material Number of steps to remove and insert duct tape
< 3
FUNCTIONAL BLOCK DIAGRAM
• Human input – setup
• Clean Duct-tape• Suspended FODs
Inputs
• Drift passively• Allow polluted air to
enter• Capture suspended
FODs• Prevent captured
FODs from escaping
Functions• Clean, FOD-free air• Recreational
Benefits• Saturated Duct-tape
covered in captured FODs
Outputs
Alternative Prototype 1
Shielding Structure and tendency to passively roll/bounce
Compliance with 3D Printing Restrictions
Alternative Prototype 2
Inverted sticky surface to maximize area and efficiently capture particles
Need for active propulsion and electric components
Final Conceptual Design
Shielding Structure and tendency to passively roll/bounce
Inverted sticky surface to maximize area and efficiently capture particles
Mathematical analysis:Proof of strength to withstand collisions
𝐼𝑛𝑖𝑡𝑖𝑎𝑙𝑉𝑒𝑙𝑜𝑐𝑖𝑡𝑦 :𝑉 1¿5𝑓𝑡𝑠𝑒𝑐 ≈1.5
𝑚𝑠
𝑇 𝑖𝑚𝑒𝑆𝑝𝑎𝑛𝑜𝑓 𝐶𝑜𝑙𝑙𝑖𝑠𝑖𝑜𝑛 :∆ 𝑡=0.01 𝑠
𝐹𝑖𝑛𝑎𝑙𝑉𝑒𝑙𝑜𝑐𝑖𝑡𝑦 :𝑉 2¿ 0𝑚𝑠
𝐴𝑣𝑒𝑟𝑎𝑔𝑒 𝐴𝑐𝑐𝑒𝑙𝑒𝑟𝑎𝑡𝑖𝑜𝑛 :𝑎=∆𝑉∆ 𝑡 =−150𝑚
𝑠2
𝑁𝑒𝑡 𝐹𝑜𝑟𝑐𝑒 :∑ 𝐹=𝑚 .𝑎=15𝑁
𝑃𝑟𝑒𝑠𝑠𝑢𝑟𝑒𝑎𝑐𝑡𝑖𝑛𝑔𝑜𝑛 𝑓𝑎𝑐𝑒 :𝑃=𝐹𝐴=1.07 𝑘𝑃𝑎
𝒀𝒊𝒆𝒍𝒅𝑺𝒕𝒓𝒆𝒏𝒈𝒕𝒉𝑬𝒙𝒆𝒓𝒕𝒆𝒅 𝑷𝒓𝒆𝒔𝒔𝒖𝒓𝒆 ≈𝟏𝟎
𝟓
𝐴𝑣𝑔 .𝑌𝑖𝑒𝑙𝑑 h𝑆𝑡𝑟𝑒𝑛𝑔𝑡 :𝟒𝟒𝑴𝑷𝒂
𝑃𝑟𝑒𝑠𝑠𝑢𝑟𝑒𝑎𝑐𝑡𝑖𝑛𝑔𝑜𝑛 𝑓𝑎𝑐𝑒:𝟎 .𝟎𝟎𝟏𝑴𝑷𝒂
Mathematical analysis:Proof of maximized surface area
𝑺𝒖𝒓𝒇𝒂𝒄𝒆 𝑨𝒓𝒆𝒂𝒐𝒇 𝑻𝒓𝒊𝒂𝒏𝒈𝒍𝒆𝒔𝑺𝒖𝒓𝒇𝒂𝒄𝒆 𝑨𝒓𝒆𝒂𝒐𝒇 𝑪𝒚𝒍𝒊𝒏𝒅𝒆𝒓 ≈𝟏 .𝟖𝑺 . 𝑨 .𝒐𝒇 𝑺𝒑𝒉𝒆𝒓𝒆>𝑺 . 𝑨 .𝒐𝒇 𝑻𝒓𝒊𝒂𝒏𝒈𝒍𝒆𝒔>𝑺 . 𝑨 .𝒐𝒇 𝑪𝒚𝒍𝒊𝒏𝒅𝒆𝒓
Exploded View
Assembly
Fulfillment of 3D Printer Requirements
Alternative Protection Designs
Results
Size • 7cm x 7 cm x 7 cm
Mass • 35 g
Dual tape-application mechanism
Structurally sound
Small and unobtrusive
Maximized surface area
3D-Print within restrictions
Alternative Implementations
• Increase size and adhesiveness• Carry small tools and objects
Portable Storage Device
• Use lights and colors for decoration• Use as a ball or die to play games
Interactive Recreational Die
• Insert air freshener cartridges for on-the-go freshnessMobile Air-Freshener
Future ImprovementsAdd Photo-luminescent materials for night illumination
Add LED lights for signal messages
Add Sensors to indicate toxic air quality levels
Self-propulsion for quicker and automated cleaning
Incorporate an Internal Adhesive Replenishment System (IARS)
Acknowledgements Mr. David Kanipe
Dr. Greg Chamitoff
Dr. Joe Kerwin
Mr. Rodney Boehm
Aggies Invent Organizers
EIC Volunteers and Technicians