engineering design

Engineering Design

Utilizing the Engineering Design Process

Engineers Follow A ProcessThe Engineering Design Process is a

step-by-step problem-solving strategy, with criteria and constraints, used to develop many possible solutions and

then choose the best one.

A Review…

The Engineering Design Process

Step 1- ASK

What is the problem?What exactly are you being

asked to do?

Step 1- ASK

What are the requirements?

What MUST your solution do?(Be a certain size? Hold a certain

amount of weight?)

Step 1- ASKWhat are the constraints?

A constraint is a limit to the design process. It may be things

such as appearance, funding, space, material, and/or human

capabilities.

Step 2- IMAGINEBrainstorm Ideas

Brainstorming is a method of shared problem solving in which

all members of the group spontaneously generate ideas in

an unrestricted discussion

Step 2- IMAGINEChoose the Best IdeaDiscuss your ideas. Determine if they meet the requirements and constraints. Then use a matrix to

compare each idea and decide which one is the best.

Option-List the things that are good about this design.

List the things that are not so good about this design.

Design Comparison Chart

Step 3- PLANDraw Your Design

Create a detailed drawing that clearly shows what your solution will

look like. This should include the exact criteria for your design.

Criteria is the desired specifications(elements or features)

of a product or system.

Step 3- PLAN

Gather Your MaterialsMake sure you have everything

you will need to create your design.

Step 4- CREATE

Follow Your PlanUse your drawings and materials to actually build, create, prepare,

etc. your design.

Step 4- CREATETest It Out

Try it and analyze the outcome.Analyze means to examine

carefully and in detail so as to identify causes, key factors,

possible results, etc.

Step 5- IMPROVEDoes it meet the requirements?

If not, begin the process again to find a solution to this problem. If

so, begin the process again to make it better.

Step 5- IMPROVEDoes it meet the

constraints?If not, begin the process again to find a solution to this problem. If

so, begin the process again to make it better.

Are You Ready to Apply This to A Real Life Situation?

PICTURE THIS…

You go out for a nice helicopter ride…

What do you do?

A Helicopter Can Land Safely if the Engine

Shuts Down while in Flight.

How?

AutorotationThe state of flight

where the main rotor system Is being turned by the

force of the relative wind rather than engine power

Aerodynamicsthe study of forces and the resulting motion of objects

through the air

4 Forces Of Flight

Lift the force that directly opposes the weight of an airplane and holds the airplane in the air

Weight

the force generated by the gravitational attraction of the earth on the aircraft; lift must be equal to weight in order to sustain flight.

Thrust a force applied to a body to propel it in a desired direction; the force which moves and aircraft through the air

DragResistance of the air (technically a fluid) against the forward movement of an airplane

Your Design Challenge…

Build A Better

Bunny Copter