UNIT 3 – Engineering Design

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

What is a systematic application of something?

– an organized or established procedure;

– a set of steps

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UNIT 3 – Engineering Design

a. Getting familiar with the Big Idea

b. The Design Process

c. Core Technologiesd. Mechanical Engineering

e. Electrical Engineering

f. Reverse Engineering

g. Fluid Engineering

h. Thermal Engineering

i. Optical Engineering

j. Materials Engineering

The Core Technologies

PURPOSE OF LESSON

• To familiarize students with the core technologies (engineering resources) – the building blocks of the designed world – by having students identify and describe the core technologies as they are applied in the designed world.

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The Core Technologies

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Write these down:

What is a function?

The action for which a thing exists

What is an application?

A use to which something is put

• Do NOT copy everything – get key words• All examples are not necessary – write those

that sum it up to you.• Listen while you take notes.

NOTE TAKING:

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• The technology of putting together mechanical parts to produce, control, and transmit motion.

Mechanical Technology

Example applications: •Gear systems in a car transmission, •Brakes on a bicycle, •Agitator in a washing machine, •Latch on a door.•Springs in vehicle shocks

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• The technology of putting mechanical parts and materials together to create supports, containers, shelters, connectors, and functional shapes.

Example applications: •Legs on a chair, •City water tower, •Swimming pool, •Roadways and Bridges, •Bicycle spokes•Airplane wing, •Satellite antenna disc.

Structural Technology

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• The technology of producing, storing, controlling, transmitting and getting work from electrical energy.

Example applications: •Power plant generator, •Flashlight, •Electric motor in a can opener, •Doorbell, •Electric heater, •Hair dryer.

Electrical Technology

• The technology of using small amounts of electricity for controlling; detecting; and information collecting, storing, retrieving, processing and communicating.

Example applications: •thermostat for controlling temperature, •a metal detector, •video tape recorder, •computer, •pocket calculator, •telephone, •radio, •television.

Electronic Technology

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• The technology of using fluid, either gaseous (pneumatics) or liquid (hydraulic) to apply force or to transport.

Example applications: •Air brakes on a truck, •Tires on a car, •Airfoils on an airplane, •Warm-air heating ducts, •Hydraulic jack, •Plumbing in a school•Hydro-electric dam

Fluid Technology

• The technology of producing light; using light for information collecting, storing, retrieving, processing and communicating; and using light to do work.

Example applications: •Lightbulb, •Light-emitting diode, •Lenses to magnify or reduce, •Laser speed detector, •Laser compact disk, •Fiber-optic telephone communication, •Laser cutting tools, •Laser surgical instruments.

Optical Technology

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• The technology of producing, storing, controlling, transmitting and getting work from heat energy.

Example applications: •Furnace, •Hot water heater, •Toaster, •Insulation, •Heat exchanger, •Refrigerator, •Hot air balloon.

Thermal Technology

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• The technology of using, adapting, and altering organisms and biological processes for a desired outcome.

Example applications •“Stain-eating” enzymes in detergent, •Bacteria “leaching” metals from ore, •Altering plant genes to produce better crops.•Oil-eating microbes used in oil spill remediation •Genetically-modified agriculture

Biotechnology

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• The technology of producing, altering, and combining materials.

Example applications:

•Producing paper from wood,

•Producing aluminum from ore,

•Drilling holes in wood,

•Annealing to soften metal,

•Laminating wood.

Materials Technology

Name the core technology:

Springs - Mechanical

Chassis - StructuralGear teeth - Mechanical

Heat Sink - Thermal

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Name the core technology:

Air Foil - Fluid

Rotating Propeller - Mechanical

Lenses - Optical

Frame - Structural