2011 Human Powered Vehicle Challenge 'Mjolnir' Team Members: Tad Bamford Ben Higgins Chris Schultz Aaron Stanton Neal Pang

Overview Introduction Mission Statement Product Design Specifications HPVC Rules and Guidelines 2010 HPV Team Reflection (2nd Place Overall) Benchmarks Design Considerations and Metrics Involved Analysis Conclusion Appendix

Mission Statement We, the 2011 PSU HPV team, will design and manufacture a vehicle to surpass the competition in the 2011 ASME HPVC West in Bozeman, MT and the achievements made by previous PSU HPV teams.

Product Design Specifications Setting an Archetype Overcome obstacles o Given, Required, and Solution. Satisfy the customers o Accommodate solution Learn from history o Follow successes o Abandon mistakes

2011 HPVC Outline Events o Design  Engineering Principles/Practices o Drag Race  Acceleration/Top Speed o Utility Endurance  Practical Performance/Reliability o Speed Endurance  Sport Performance/Reliability Energy Storage Devices o Human power only external energy source o Preferred power assist system

Customersrs End users - Design Team, Race Team Management - ASME Competition Rules, Faculty Adviser, Competition Judges Finance - SALP, ME department Procurement - SALP Manufacturing - Design Team, ME Department, Contract Shops Shipping - Design Team Codes and Standards - ISO, ASME Competition Rules,Bicycle Industry Standards Legal - SALP Maintenance - Design Team, Race Team, ME Department

Strengths & Weaknesses Experience from past events shows focus aspects Ideas to Run With Tricycle - Stable and easy to use Rohloff Hub - Simplifies drive train Minimal Fairing - Balance of benefits and cost Rider position - Proven effective and comfortable Things to Improve Steering geometry - Efficiency and high speed stability Leaning - To complement steering geometry Seat - Comfort and adjustability Handlebars - Optimize leverage and position Weight - It can always be lighter

Key Design Constraints Stop within 20 feet from 15 mph. Turn radius <25 feet. Travel 100 feet stably in a straight line. Roll bar that absorbs impact energy, resists abrasion and prevents body to ground contact. Roll bar physically passes prescribed top and side static loading tests. Professionally manufactured safety harness. Transport a total load of 20 lbs with dimension requirements Look awesome!

Design Considerations Reliability and Manufacturability o Materials o Safety Factor o Maintenance Constraints o Roll Bar o Seat Belt o Sharp Edges Top Speed/Acceleration o Weight o Aerodynamics/Shape Practicality o Package Transport o Comfort o Energy Efficiency/Management o Simplicity/Ease of Use Maneuverability o Bicycle vs.Tricycle o Geometry o Turn Radius o Dynamic/Static Frame

Analysis Vibrational Analysis and Programming o Suspension Finite Element Analysis o Frame o Wheels o Uprights Dynamic Model Behavior o Dynamic Frame Inputs Strength of Materials o Wheels Computational Fluid Dynamics o Fairing Manufacturing Processes

Conclusion The goal is to design a human powered vehicle which follows the rules and guidelines of the challenge, while also proving ourselves as notable engineers among the many others competing. As good practice for outstanding engineering, fabricating a well planned design will save time and money!

Schedule

PDS Summary