U3c-L2

Which of the core technologies could you find in a hybrid car? List them and give an example for each.

December 1, 2008

DRILL

1. Mechanical – Engine

2. Structural – Chassis

3. Electrical – High Voltage Batteries

4. Electronic – ECU (engine control unit)

5. Fluid – Engine Coolant

6. Optical – CD Player

7. Thermal – A/C

8. Biotechnology – Air Filter

9. Materials – Metal, Synthetic Fibers, Plastics

1. Identify the problem that the technology system solves.

2. Analyze the technology system:

What is its function and/or application?

3. List the resources (core technologies) you recognize in the technology system.

Laptop Computer Mars Rover Steering Wheel

from Lesson 1

U3c-L2

Quiz Wednesday on the following:

• Be able to list the 9 core technologies• You will be given technological artifacts and be

required to identify which core technology corresponds to which artifact.

• You will also need to be able to sketch a diagram that shows the transfer of energy in an electric car and a gas-powered car.

Today’s

U3c-L2

Sketch a diagram that shows the transfer of energy in an electric car – label all components.

Transfer of Energy

Start with: Goes to: Drives:

U3c-L5

Sketch a diagram that shows the transfer of energy in a gas-powered car – label all components.

Start with: Goes to: Drives:

U3c-L5

Gas tankGas tank

Transfer of Energy

Test 3a/3b Solutions

U3c-L2

D

HGAI

E

FB

Test 3a/3b Solutions

U3c-L2

• 8 Constraints on the

1. Safety – is the product safe to use?

2. Cost – is it affordable?

3. Reliability – will it work consistently over time?

4. Environmental Concerns – does it harm the natural or human environment negatively?

5. Ergonomics – how efficiently can the human body utilize it?

6. Manufacturability – can it be made?

7. Quality Control – does it meet customer requirements?

8. Maintenance – how easily can it be maintained or upheld?

Design Process

SCREEMQM

Test 3a/3b Solutions

U3c-L2

• Personal characteristics of engineers1. Creativity

2. Resourcefulness

3. Ability to think abstractly

• An engine turns _________ motion into _________ motion.

LinearCircular

Test 3a/3b Solutions

U3c-L2

• 7 inputs into all technological systems

1. People

2. Information

3. Capital ($)

4. Time

5. Machines and tools

6. Energy

7. Materials1. Natural – found in nature

2. Synthetic – human-made

3. Composite – mixture of natural and synthetic

Test 3a/3b Solutions

U3c-L2

• Explain why the design process is never considered to be final.

The design process is never considered to be final because there is always an opportunity to refine, improve, and update designs. There is no single solution to most design problems.

Test 3a/3b Solutions

U3c-L2

• 4 design principles1. Design is the result of a formal, sequential process.

2. Design is driven by profit motive and market ($ or not).

3. Design is the result of goal-oriented research.

4. Designs must be continually checked, refined, and improved

• What is engineering?Engineering is the systematic application of scientific, mathematical, and technical principles that yields tangible end products that meet our needs and desires.

Test 3a/3b Solutions

U3c-L2

– Risk Analysis: an analysis of a technology that minimizes the likelihood of undesired outputs

– Constraint: a limit or restriction to the design process

– System: a technology or process that has many parts, and each part has a relationship to each other and the whole

Test 3a/3b Solutions

U3c-L2

INPUTS PROCESSES

OUTPUTS

GOALS

GOALS

FEEDBACK& Control

Sketch and label the components:

W =

P =

R =

C =

V = U3b-L5

Cylinder Wall

Piston

Connecting Rod

Crankshaft

Valves

Test 3a/3b Solutions

Columns to include in your chart:

In your notebook – create a chart

CORE TECHNOLOGY

DESCRIPTION EXAMPLES

U3c-L2

• 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:

U3c-L2

• 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

U3c-L2

U3c-L2

• 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

U3c-L2

• 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

U3c-L2

U3c-L2

• 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

U3c-L2

• 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

U3c-L2

U3c-L2

• 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

U3c-L2

• 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

U3c-L2

U3c-L2

Name the core technology:

Air Foil - Fluid

Rotating Propeller - Mechanical

Lenses - Optical

Frame - Structural