Solution Manual for Design Concepts for Engineers, 5th Edition

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-1-Design Concepts for Engineers – 5thEditionby Mark N. HorensteinResource ManualOverview:This manual is intended to serve as a guideline for the instructor teaching a course on engineering design whileusing the textDesign Concepts for Engineers, 5thEdition. Given the very nature of design, most of the problemsin the text are open ended and hence have no single solution. Thus many of the “solutions” in this manual arereally just suggestions that are meant to help you as an instructor and motivate your students. Where they appearin the text, complete answers to analytical (non-design) problems are provided.Coverage of Problems:This manual does not cover every problem in the text, but only a representative sample from each topicalsection.Given the unfortunate proliferation of solution manual copies on the Internet and their widespreadavailability to students, I have reserved some problems without solution so that the instructor can, by usingsolved problems as template guidelines, construct similar solutions to those for which a solution is not provided.The richness of this manual can be greatly enhanced by contributions of users like you who contribute solutionsto problems not currently covered.If you would like your solution of particular problem added to futurerenditions of this manual (with appropriate citation to you) or kept in a future Instructor-Only databank, feel freeto mail your solution to the author at mnh@bu.edu. Contributions from your students are also most welcome.CHAPTER 1 – WHAT IS ENGINEERINGThis chapter contains no problems or exercises.CHAPTER 2 – WHAT IS DESIGNSolutions to Selected ProblemsProblem 2.1 -Develop a design concept for a mechanical device that will allow hands-free operation of anautomobile based on the GPS system. Outline its basic form, key features, proposed method of construction, andprototyping plan. Consider size, weight, shape, safety factors, and ease of use.Some considerations for the design of a device to steer a car based on the GPS system:1)The GPS data must be obtained electronically from the GPS tracker in the form of numbers that indicatelatitude and longitude2)The system must include detailed map data that indicates the GPS coordinates of roads, turns,intersections, plus a database of traffic lights and stop signs3)The system must include an array of sensors to detect the proximity of other cars, pedestrians, bicycles,and obstacles, then use this information to determine whether or not it is safe for the car to proceed.4)A dash mounted console is the best interface, as it will allow for easy viewing by the car’s occupants.5)The system must be fail-safe (failure of the system must stop the car, and indicate to the occupant that alive, human driver is needed.Problem 2.2-Develop a concept for a device that will allow hands-free use of a mobile phone without the additionof accessories such as an earphone, microphone, or Blue-Tooth® headset. Your design should be based solely on amechanical solution.Some possible methods for the design of a device for holding a mobile phone hands freer:1)Headband that has phone clip. It positions phone next to user’s chin.

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