Foldable Stair Climbing Cart

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Part I – Design

Foldable Stair Climbing Cart 

Project statement

Design a Climbing Cart that can be used for easily transporting groceries, laundry, books etc… Devise a mechanism of motion that can tackle obstacles, stairs, curbs, slopes and uneven terrain. It should be foldable to a maximum of 5 in. depth for easy storage. Weight should not exceed 15 lb., while maintaining a weight capacity of 100 lb. The size of the cart should accommodate moving of medium-sized household items. Customers prefer the product to have a comfortable handle, and to be quick and easy to assemble.

 

Part II – Economics

Investor group offered three proposals

  1. To invest $3,500,000 on this product with annual O&M of $62,000 starting end of year The proposal is expected to result in annual benefit in cash flow of $920,000 over nayears period withinterest rate of 12.5%.
  2. To invest $2,700,000 on this product with annual O&M of $83,000 starting end of year The proposal is expected to result in annual benefit in cash flow of $830,000 over nb years period withinterest rate of 11%.
  3. Toinvest$1,900,000onthisproductwithannualO&Mof$91,000startingendofyearTheproposal isexpectedtoresultinbenefitincashflowof$220,000firstyear,whichincreasesby$60,000yearlyoverncyears period with interest rate of 14%.

Which proposal you should accept, using the present worth analysis?

 

 

Group A na = 4 nb = 8 nc = 16
Group B na = 8 nb = 4 nc = 16
Group C na = 6 nb = 8 nc = 24
Group D na = 5 nb = 4 nc = 20
Group E na = 4 nb = 5 nc = 20
Group F na = 5 nb = 10 nc = 20

 

 

Instructions

Form teams and work on producing the following project components:

 

  • AprototypeThemodel cannotbelessthan25%oftheoriginalsize.

The proof of concept should be shown through a physically made prototype/ model. Submission of the prototypes/ models.

 

  • A written report. Each report shouldinclude:
    • Titlepage;
    • Table of contents, showing sections withheadings;
    • Introduction outlining the scope of yourproject.
    • Methodology
    • Discussion/ procedure, that reflects understanding of the design methodology. Discuss the problem formulation, objectives, objective tree, PCC chart, constraints, function- means tree, QFD chart and drawings. Also include requirements (specifications), metrics and a conceptual design with an alternatives and morphological chart followed by a detaileddesign(costs,materialsandanalysisofdesign).Projectplanningandtimelineshould be included. Discussions should address the ethical and environmental issues.
    • Results
    • Conclusion summarizing thereport.
    • Technical drawings using a CAD tool should be printed andattached.

 

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