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TREDS The Hard Boilers: Chris Chapman Megan Kalend See Vang ENGR 5 University of the Pacific Overview Problem Approach Results Improvements Conclusions Acknowledgements Problem
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TREDS The Hard Boilers: Chris Chapman Megan Kalend See Vang ENGR 5 University of the Pacific
Overview • Problem • Approach • Results • Improvements • Conclusions • Acknowledgements
Problem • Refugees inhabiting a region across a thirty-foot wide river are in need of eggs. These must be delivered across the rebel-patrolled waters.
Constraints • Size requirements • Timed delivery • Range • Target restrictions • Egg delivered intact • Cost efficiency
Approach • Preliminary Ideas • Refinement • Analysis • Implementation • Testing
Preliminary Ideas • Catapult or Trebuchet? • Pros • Cons • EPU • Materials • Shape
Catapult Refinement • Implemented elastic power source in place of counterweight • Pros • Cons
EPU Refinement • Material: • Armaflex® rubber insulation • Shape: • Modified barbell
Analysis • Conservation of Energy • Elastic Energy
Analysis • Projectile motion
Implementation • Using Laws of Conservation • Logical Estimation • Preliminary Platform
Testing • Trial Setup
Results • Final design • Competition performance • Analysis
Future Improvements • Time Constraints • Allow for scheduling problems and last-minute system checks • Optimization • Optimize system in each step of design and construction process • Efficiency • Solve glitches to create a more effective TREDS.
Conclusions • Constraints and Criteria • Final Design • Competition Performance • Improvements • Any Questions???
Acknowledgements • Mr. Jared Lash of Saint Mary’s High School • Michael Kalend