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Identify the design problem to solve and to decide whether to address it. (ITEA, STL 11-M)

Objectives:. Identify the design problem to solve and to decide whether to address it. (ITEA, STL 11-M) Refine a design by using prototypes and modeling to ensure quality, efficiency, and productivity of the final product. (ITEA, STL 11-O)

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Identify the design problem to solve and to decide whether to address it. (ITEA, STL 11-M)

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  1. Objectives: Identify the design problem to solve and to decide whether to address it. (ITEA, STL 11-M) Refine a design by using prototypes and modeling to ensure quality, efficiency, and productivity of the final product. (ITEA, STL 11-O) Explain that not all problems are technological, and not every problem can be solved using technology. (ITEA, STL 10-K) Identify and describe problems that cannot be solved through the use of technology. Document processes and procedures and communicate them to different audiences using appropriate oral and written techniques. (ITEA, STL 12-L) Diagnose a system that is malfunctioning and use tools, materials, and knowledge to repair it. (ITEA, STL 12-M)

  2. The Big Idea • Engineering, the systematic application of mathematical, scientific, and technical principles, produces tangible end products that meet our needs and desires.

  3. Purpose of Lesson • To familiarize students with reverse engineering (RE), the process of taking something (a device, an electrical component, a software program, etc.) apart and analyzing its workings in detail, usually with the intention to construct a new device or program that does the same thing without actually copying anything from the original.

  4. Design Problems • Identifying a design problem takes a keen eye. • It helps to solve and to decide whether to address it. See if you can identify a design problem for the following statement: There have been many houses on my street that have been broken into. My neighbor just installed a burglar alarm. Another neighbor wants to create a surveillance system to watch everyone on the street. There have been many houses on my street that have been broken into.

  5. Design Problems • Not all problems are technological, and not every problem can be solved using technology. • Can you think of a problem that is not technical or one that can not be solved using technology?

  6. Reverse Engineering - the process of taking something (a device, an electrical component, a software program, etc.) apart and analyzing its workings in detail The intention is to construct a new device or program that does the same thing without actually copying anything from the original. From Finish to Start

  7. Resulting knowledge gained through the reverse-engineering process can be applied to the design of similar products Capitalizing on successes and learning from the shortcomings of existing designs is the objective of reverse engineering. Reverse Engineering

  8. Reverse Engineering • Ever wonder what is inside of that thing? That is a good thing to RE. • Follow the RE steps that will be explained. • Create a display that a person can easily determine what you RE as well as the parts.

  9. Step 1 Prediction • What is the purpose of this product? • How does it work? • What market was it designed to appeal to? • List some of the design objectives for the product. • List some of the constraints that may have influenced the design.

  10. Step 2 Observation • How do you think it works? • How does it meet design objectives (overall)? • Why is it designed the way it is?

  11. Step 3 Disassemble • How does it work? • How is it made? • How many parts? • How many moving parts? • Any surprises?

  12. Step 4 Analyze • Carefully examine and analyze subsystems (i.e. structural, mechanical, and electrical) • Develop annotated sketches that include measurements and notes on components, system design, safety, and controls.

  13. Step 5 Test • Carefully reassemble the product. • Operate the device and record observations about its performance in terms of functionality (operational and ergonomic) and projected durability. For educational purposes, we will not reassemble and test the product in class

  14. Documentation Inferred design goals Inferred constraints Design (functionality, form (geometry), and materials) Schematic diagrams Lists (materials, components, critical components, flaws, successes, etc.) Identify any refinements that might enhance the product’s usefulness. Upgrades and changes Step 6

  15. Exploration • Read the article, “How Soviets Copied America’s Best Bomber During WWII.” • http://archives.cnn.com/2001/US/01/25/smithsonian.cold.war/

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