3. Clean Sweepers
Name 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
4. “There is no problem so bad that you
can’t make it worse.” – Chris Hadfield
5. Need statement
Device to circulate throughout
the ISS and collect stray pieces
of Foreign Object Debris
6. Needs and Constraints
Needs 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
7. Engineering Specifications
Requirements Metrics
Numerical
Targets
Lightweight 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
8. 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
10. Alternative Prototype 2
Inverted sticky surface to maximize area and
efficiently capture particles
Need for active propulsion and electric components
11. Final Conceptual Design
Shielding Structure and tendency to passively roll/bounce
Inverted sticky surface to maximize area and efficiently capture particles
18. 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
19. 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 freshness
Mobile Air-Freshener
20. Future Improvements
Add 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)
