Backpacking Pain Points Sore shoulders Unreliable energy sources - PowerPoint PPT Presentation

May 09, 2023 •275 likes •504 views

Backpacking Pain Points Sore shoulders Unreliable energy sources 12.2 million backpackers in US Our Solution Linear Bearings Floating Pack Spring/Damper System Charging Battery Can we reduce peak forces felt by a

Backpacking Pain Points ● Sore shoulders ● Unreliable energy sources
12.2 million backpackers in US
Our Solution Linear Bearings “Floating” Pack Spring/Damper System Charging Battery
Can we reduce peak forces felt by a backpacker?
Sketch Model
Sketch Model
Sketch Model
Sketch Model
Sketch Model
Sketch Model
Sketch Model
Springs Worsened Forces!
Results Explained - Model is overly simplified - External damping force needed
Next Steps - Reassess feasibility with different suspension models - Pulley system - Dampers - Select electricity generation method - Magnetic flux induced current - Linear to rotational motion
Citations SMA Sports Market Analytics, http://sportsmarketanalytics.com/ (for backpacking participants; accessed October 2, 2019). Thomas, Anthony T., "Effects of Pack Weight on Endurance of Long-distance Hikers" (2013). Dissertations and Theses. 140. https://commons.erau.edu/edt/140 Hoover, J., and S. A. Meguid. “Performance Assessment of the Suspended-Load Backpack.” International Journal of Mechanics and Materials in Design , vol. 7, no. 2, 2011, pp. 111–121., doi:10.1007/s10999-011-9153-7.
Reference Slides
Sketch Model 3 inch range 0.687 ⇩ Joules/step* 6 inches per step *Assuming 27 lb bag and 2.2 Hz step frequency
Sketch Model 3 inch range 0.687 ⇩ Joules/step* 6 inches per step *Assuming 27 lb bag and 2.2 Hz step frequency
Sketch Model 3 inch range 0.687 ⇩ Joules/step* 6 inches per step *Assuming 27 lb bag and 2.2 Hz step frequency
Sketch Model 3 inch range 0.7 ⇩ Joules/step* 6 inches per step *Assuming 27 lb bag and 2.2 Hz step frequency
Sketch Model 5 miles at 0.7 Joules/step 50% phone charge OR > 2 hours flashlight use

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