Download Design of Human-Powered Vehicles by Mark Archibald PDF

By Mark Archibald

This e-book is ready the layout of autos with wheels which are powered by way of human muscle groups by myself. those delivers cheap, sustainable, and fit transportation to humans world wide. The time period Human-Powered automobile, or HPV, is usually used to indicate a sub-class of automobiles together with basically high-performance bicycles or tricycles outfitted with aerodynamic fairings. extra mostly, the time period refers to any semi-recumbent bicycle. however the time period should still safely consult with any technique of carriage, conveyance, or shipping that's powered exclusively through human muscles.

This publication is restricted to layout of human-powered autos for land use. there are various the explanation why the layout and use of such autos is useful. In constructed international locations, utilizing an HPV in lieu of an car (or in lieu of a moment car for a relations) can shop $5,000 to $10,000 every year, whereas bettering future health and decreasing emissions of greenhouse gases and toxins. Greenhouse gasoline emission could be lowered by means of greater than 4,000 kg according to 12 months as a result of corresponding aid in power intake of greater than 17,000 kWh. furthermore, infrastructure for biking is way less expensive than highways designed for automobile traffic.

Human-powered automobiles have been initially designed for transportation, and that's nonetheless their most vital use. HPVs at the present time offer fresh, quiet, and effective transportation. possibly the main compelling cause to exploit HPVs is sustainability: the environmental footprint of HPVs is usually a lot, a lot smaller than that of different modes of transportation. regardless of those commonalities, HPVs are utilized by quite a few diverse humans for quite a lot of diversified purposes, together with game, festival, expense, healthiness, transportation, and crisis for the environment.

The contents comprise production procedures and fabrics, functionality modeling, dealing with, drivetrains, buildings, elements, human functionality, and layout ideas.

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Chapter 4 includes data on the power a human can produce with leg cranks, and is relevant to this task. Second, determine values (or ranges) for all the primary performance metrics. The product design specification (PDS) can then be prepared. Note that soft metrics can be quantified with appropriate scales. For example “Overall Appearance of Vehicle” may have a minimum value of 4 based on a scale of 1 to 5. In general, values for the design control variables will be determined in a later step. These values will be selected in order to obtain the desired performance characteristics defined by the design envelope variables and the performance target metrics.

A boat configuration might be an open monohull single operator boat with stern propeller drive. Choosing a configuration places limits on control variable values, constraining the design. Values become easier to establish and to interpret. See Chapter 2 for examples of vehicle configurations. CHECK: Before proceeding, check that the configuration is compatible with the mission statement. If not, repeat this step and develop a new configuration. Determine vehicle gross geometry Tentatively assign control variable values to establish the gross vehicle geometry.

It may be quite challenging, and the road from idea to realization can be more convoluted than linear. A pre-established structure, or plan, for the design process can be helpful to the designer, in much the way an outline aids a writer. This chapter defines and describes a general structure for HPV design. It is a broad template, applicable to many types of human-powered vehicles. The objective is to provide an outline or plan for the design process. Each section includes a description of tasks that should be completed, followed by a brief outline, which can be used as a checklist.

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