June 26, 2011
June 26, 2011
June 29, 2011
22.1225.1 - 22.1225.24
Redesign of Outboard Motors for Use in the Grand CanyonIntroductionThis paper details a two-semester design and build project accomplished by a multidisciplinarystudent team working on a problem funded by the Grand Canyon River Outfitter’s Association(GCROA). Students from three engineering-based degree programs were involved in theproject. This reflects a primary objective of our capstone experience; to provide, in a projectsetting, an educational experience consistent with professional practice. Student motivation wasalso augmented by this project as it was part of a larger effort to enhance the environmentalaspects of float trips through the Grand Canyon. Thus, the curricular design “flavor” of theproject is consistent with recommendations from several recent engineering educational studies,including Sheppard et al. (2009) and Duderstadt (2008). Both of these reports strongly urge theadoption of curricular mechanisms that include practice-like experiences, including both designand prototyping, which are connected to important issues within society.Project DescriptionThe GCROA has funded a multi-year project set, involving up to four Universities, focused onreducing the environmental impacts on motorized float trips through the Grand Canyon. Animportant environmental consideration was noise. Thus, in the first year of the effort, electricmotors became a primary solution mode. Also, data from the GCROA indicated that theoutboard motor lower ends, designed for much less rigorous use, often were damaged. Thus, inthe second year of the effort, the GCROA funded two schools to design and build prototypes of amuch more robust lower end which were also adapted for electric motors.The first semester was focused on the team completing a rigorous design process, involvingestablishing the problem statement, generation and evaluation of criteria, constraints, feasiblesolutions, and selection of the best design solution. The second semester was focused on thefinal detailed design and manufacture of the prototype, all accomplished by the students. Theprototype was tested on the water at the end of the project.Additional explanation and description of the process of forming the multidisciplinary team andtheir implementation of the design and build effort are described in the full paper. Assessmentdata are included that relate to the learning and enhanced educational experience of the studentsare included.
Georgeou, T. M., & Danielson, S., & Roberts, C. A. (2011, June), Redesign of Outboard Motors for Use in the Grand Canyon Paper presented at 2011 ASEE Annual Conference & Exposition, Vancouver, BC. https://peer.asee.org/18869
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