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Team 4673 Human Powered Vehicle ASME Human-Powered Vehicle Challenge: Speed Class Item Type Electronic Thesis; text Authors Copp, David Andrew; Craig, Danielle; DuBois, Avi; Geery, Ian; Meacham, Heather; Phillips, Sean Publisher The University of Arizona. Rights Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. Download date 29/09/2021 16:04:45 Item License http://rightsstatements.org/vocab/InC/1.0/ Link to Item http://hdl.handle.net/10150/144258 1 2 UNIVERSITY OF ARIZONA ASME HUMAN-POWERED VEHICLE CHALLENGE: SPEED CLASS By: David Copp Danielle Craig Avi DuBois Ian Geery Heather Meacham Sean Phillips May 2011 ENGR 498 University of Arizona 3 Abstract Human-powered transport is often the only type available in underdeveloped or inaccessible parts of the world, and if well designed, can be an increasingly viable form of sustainable transportation. ASME's International Human Powered Vehicle Challenge (HPVC) provides an opportunity for undergraduate engineering students to demonstrate the application of sound engineering design principles in the development of sustainable and practical transportation alternatives. In the HPVC, students work in teams to design and build efficient, highly engineered vehicles for everyday use—from commuting to work, to carrying goods to market. Though some Speed Class vehicles have topped 60 mph, the competition assigns greater value to the elegance and ingenuity of the design, including presentation, practicality, safety and functionality. The recently-introduced Unrestricted Class presents new opportunities for creativity and innovation, allowing teams to incorporate regenerative energy storage devices in their designs. For this thesis and senior capstone project, the senior design team will design and manufacture a human-powered vehicle by the 2011 Human Powered Vehicle Challenge date. Statement of Roles and Responsibilities of Team Members: David Copp Project Management Development Plan RPS and Harness Subsystem Assemblies and Analysis Summary of Risk Analysis and Mitigation Stability Analysis Manufacturing and testing Primary vehicle rider Danielle Craig Drivetrain Subsystem Assembly and Analysis Requirements Review and Acceptance Test Plans System Requirements Avi DuBois Introduction Scope of Project Fairing description Ian Geery Frame and Fork Assemblies and Analysis Heather Meacham Steering and Braking Assemblies 4 Design Overview Sean Phillips Bill of Materials Seat Positioning System Manufacturing and testing Table of Contents Abstract ...................................................................................................................................................................................................4 Statement of Roles and Responsibilities of Team Members: ......................................................................................4 1.0 Introduction ..................................................................................................................................................................................7 1.1 Scope of the Document ......................................................................................................................................................7 1.2 Problem Statement & Background ..............................................................................................................................7 1.3 Scope of the Project .............................................................................................................................................................7 1.4 Project Expectations ............................................................................................................................................................8 1.5 Customer ...................................................................................................................................................................................8 2.0 Project Progress and Background .....................................................................................................................................8 3.0 Design and Innovation ......................................................................................................................................................... 10 3.1 Research ................................................................................................................................................................................. 10 3.1.1 Prototype....................................................................................................................................................................... 10 3.2 Design Goals.......................................................................................................................................................................... 12 3.3 Design Selection for Competition .............................................................................................................................. 13 3.3.1 Final Vehicle ................................................................................................................................................................ 14 4.0 Design Analysis ........................................................................................................................................................................ 16 4.1 Aerodynamics Analysis ................................................................................................................................................... 17 4.1.1 Fairing ............................................................................................................................................................................. 18 4.1.2 Drivetrain Analysis .................................................................................................................................................. 21 4.2 Stability Analysis ................................................................................................................................................................ 23 5.0 Testing .......................................................................................................................................................................................... 25 5 5.1 Prototype Frame Test ...................................................................................................................................................... 25 5.2 Fairing Test ........................................................................................................................................................................... 27 6.0 Safety ............................................................................................................................................................................................. 28 6.1 Safety Harness ..................................................................................................................................................................... 28 6.2 Roll-Protection System ................................................................................................................................................... 28 6.3 Protection to the Bystander ......................................................................................................................................... 29 7.0 Final Vehicle and Results – Statement of Performance/Success ................................................................... 29 References .......................................................................................................................................................................................... 32 Appendix A: Matlab Code............................................................................................................................................................ 34 Appendix B: Costs ........................................................................................................................................................................... 35 Appendix C: Risk Analysis .......................................................................................................................................................... 37 Appendix D: Sample G-Code for CNC Machine ................................................................................................................ 37 Appendix E: Miscellaneous Part Drawings ........................................................................................................................ 39 6 1.0 Introduction 1.1 Scope of the Document This document intends to provide a top level, complete description of the final design selected and serves as a road map for the manufacture, assembly, implementation, and testing of the finished product. It provides results from detailed component analysis and thorough testing. 1.2 Problem Statement & Background Human-powered transport is often the only type available in underdeveloped or inaccessible parts of the world, and if well designed, can be an increasingly viable form of sustainable transportation. ASME's International Human Powered Vehicle Challenge (HPVC) provides an opportunity for undergraduate engineering students to demonstrate
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