PrototypesPrototypes

Welcome to Innovations in Welcome to Innovations in Engineering!Engineering!

Please get your lap top and return to your Please get your lap top and return to your seat. Lap top should remain closed. On a seat. Lap top should remain closed. On a blank piece of paper, please answer the blank piece of paper, please answer the

following questions:following questions:

What is a prototype?What is a prototype?

Why prototype?Why prototype?

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What is a prototype?What is a prototype?Why Prototype?Why Prototype?

According to Wikipedia.com, a prototype is: “According to Wikipedia.com, a prototype is: “an an original type, form, or instance of some thing original type, form, or instance of some thing serving as a typical example, basis, or standard serving as a typical example, basis, or standard for other things of the same category.”for other things of the same category.”

While working in information systems, While working in information systems, Engineering prototypes are used to identify and Engineering prototypes are used to identify and validate the design requirements of a problem. validate the design requirements of a problem. Prototyping gives a good representation of what a Prototyping gives a good representation of what a possible solution possible solution couldcould be. be.

Prototyping in the Prototyping in the realreal world world

Where might we find prototyping?Where might we find prototyping? AutomotiveAutomotive Mechanical EngineeringMechanical Engineering ConstructionConstruction Aerospace/AviationAerospace/Aviation Tool and DieTool and Die Technology EducationTechnology Education

Types of PrototypingTypes of Prototyping

CosmeticCosmetic ResearchResearch ThrowawayThrowaway Functional/EvolutionaryFunctional/Evolutionary

The Prototype Design The Prototype Design LoopLoop

First, we need to find out what the “scope” is or First, we need to find out what the “scope” is or what the breadth or opportunity to function.what the breadth or opportunity to function.

Next, we must define the requirements that must Next, we must define the requirements that must bebemet.met.

Now we begin to designNow we begin to design Once we have a design, we build off it.Once we have a design, we build off it. We demonstrate or try our design to see if the We demonstrate or try our design to see if the

design fulfills all design requirements. We maydesign fulfills all design requirements. We mayneed to go back to the design segment of ourneed to go back to the design segment of ourloop, or back to the prototyping stage if loop, or back to the prototyping stage if requirements are not fulfilled.requirements are not fulfilled.

Once we have a working model, we may then Once we have a working model, we may then demonstratedemonstrate

Does this remind you of Does this remind you of anything?anything?

The Technology Design The Technology Design Loop!Loop!

Prototyping Our CO2 Prototyping Our CO2 Dragsters!Dragsters!

As part of the requirement for this As part of the requirement for this unit, you are to build a prototype of unit, you are to build a prototype of your CO2 dragster. We will be using your CO2 dragster. We will be using Styrofoam blanks that are the exact Styrofoam blanks that are the exact size as the block of wood you will size as the block of wood you will use for your final dragster. use for your final dragster.

You will be need to use tools to You will be need to use tools to create your prototype, thus we will create your prototype, thus we will be working in the back lab.be working in the back lab.

The StyroDesignerThe StyroDesigner

We will primarily be using the We will primarily be using the StyroDesigner’s or simply a hot wire StyroDesigner’s or simply a hot wire cutter to transform our Styrofoam cutter to transform our Styrofoam blanks into prototypes. Before we blanks into prototypes. Before we get to working, we must go over get to working, we must go over some safety.some safety.

Hotwire Cutter SafetyHotwire Cutter Safety All students All students mustmust wear safety glasses wear safety glasses

while in the labwhile in the lab When using the hotwire cutter, make When using the hotwire cutter, make

sure all loose clothing is secured.sure all loose clothing is secured. Do not touch the wire with bare hand.Do not touch the wire with bare hand. No more than 2 hotwire cutters per No more than 2 hotwire cutters per

table.table. Do not hold a conversation while using Do not hold a conversation while using

the hotwire cutter.the hotwire cutter. No horse play.No horse play.

Only use Styrofoam with the hotwire Only use Styrofoam with the hotwire cutter.cutter.

Plan your work before you begin Plan your work before you begin making cuts.making cuts.

Keep work area clean.Keep work area clean. Use in well ventilated area.Use in well ventilated area.

10 Steps for Successful 10 Steps for Successful Completion of a Styrofoam Completion of a Styrofoam

PrototypePrototype 1. Cut Out Final Drawing/Pattern1. Cut Out Final Drawing/Pattern 2. Tape Pattern onto Styrofoam2. Tape Pattern onto Styrofoam 3. Trace Pattern And Pierce Axle Holes3. Trace Pattern And Pierce Axle Holes 4. Trace CO2 Car Hole (End and Front 4. Trace CO2 Car Hole (End and Front

View)View) 5. Drill Axle Holes5. Drill Axle Holes 6. Cut Away Material From Side View6. Cut Away Material From Side View 7. Tape Material Back On7. Tape Material Back On 8. Cut Away Material From Top View8. Cut Away Material From Top View 9. Throw Away All Extra Styrofoam9. Throw Away All Extra Styrofoam 10. Use Sandpaper To Smooth Edges10. Use Sandpaper To Smooth Edges

ResourcesResources

Teng, Kenny, “Kenny Teng’s Projects :: Mech. E Teng, Kenny, “Kenny Teng’s Projects :: Mech. E Mouse Trap Car” 2007, February 15, 2008 Mouse Trap Car” 2007, February 15, 2008 http://www.kenteng.com/httpdocs/projects/http://www.kenteng.com/httpdocs/projects/

Tuning news, “Mitsubishi-prototype-x-pre.jpg Tuning news, “Mitsubishi-prototype-x-pre.jpg http://www.tuningnews.net/news/061227a/mitsuhttp://www.tuningnews.net/news/061227a/mitsubishi-prototype-x-pre.jpgbishi-prototype-x-pre.jpg

University of Glamorgan, “Prototyping”, 2007, University of Glamorgan, “Prototyping”, 2007, http://www.comp.glam.ac.uk/pages/staff/tdhutchihttp://www.comp.glam.ac.uk/pages/staff/tdhutchings/chapter8/sld007.html, February 12, 2008ngs/chapter8/sld007.html, February 12, 2008