Technological Impacts

1
November 2, 2009
DRILL

• Answer each question in complete sentences.
• Based on your effort, participation, and behavior
  in this class are you being the type of student
  that has been achieving expectation 1(STUDEN
  WORK SHOULD IMPROVE AS THE SEMESTER PROGRESSES)?
  If so, explain how? If not explain why? And
  What you will do to correct the situation?
• Looking into the future at what you want your
  life to look like, are your actions taking you in
  that direction?

2
TEST NEXT FRIDAY

• Unit 3a (the Big Idea)
• Unit 3b (Engineering Design Process)
• AND Flight Power

3
REVIEW

• Unit 3a The Big Idea
• 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.
• Personal characteristics of engineers
• Creativity
• Resourcefulness
• Ability to think abstractly

4
REVIEW

• Unit 3a The Big Idea
• 8 Constraints on the
• Safety is the product safe to use?
• Reliability will it work consistently over
  time?
• Cost is it affordable?
• Quality Control does it meet customer
  requirements?
• Environmental Concerns does it harm the natural
  or human environment negatively?
• Manufacturability can it be made?
• Maintenance how easily can it be maintained or
  upheld?
• Ergonomics how efficiently can the human body
  utilize it?

• Design Process

5
REVIEW

• Unit 3a The Big Idea
• 4 design principles
• Design is the result of a formal, sequential
  process.
• Design is driven by profit motive and market (
  or not).
• Design is the result of goal-oriented research.
• Designs must be continually checked, refined, and
  improved

6
REVIEW

• 5 major components of
• Goals
• Humans develop technology to meet needs or wants
• Each artifact meets more than one goal
• Inputs
• Resources that go into a system and are used by
  it
• Processes
• Design Process, Production Process, Mgt. Process
• Outputs
• Technological systems are designed to produce
  specific outputs.
• Manufactured products, constructed structures,
  communicated messages, transported people or
  goods.
• Desired and Undesired
• Feedback and Control
• Using information about the outputs to regulate
  the system.

FLOW CHART
7
REVIEW
A volunteer is needed to complete the
Technological System Components represented in a
flow chart (teacher press ctrl P for pen, ctrl
E for eraser)
GOALS
INPUTS
PROCESSES
OUTPUTS
FEEDBACK
Control
GOALS
8
REVIEW

• Unit 3b The Engineering Design Process
• 7 inputs into all technological systems
• People
• Information
• Time
• Capital ()
• Machines and tools
• Materials
• Natural found in nature
• Synthetic human-made
• Composite mixture of natural and synthetic
• Energy

9
REVIEW

• Unit 3b The Engineering Design Process
• Terms
• Risk Analysis an analysis of a technology that
  minimizes the likelihood of undesired outputs
• System a technology or process that has many
  parts, and each part has a relationship to each
  other and the whole
• Criteria a standard on which a judgment or
  decision may be based
• Constraint a limit or restriction to the design
  process
• Prototype a working model used to test design
  ideas
• Engineering the systematic application of
  scientific, mathematical, and technical
  principles that yields tangible end products that
  meet our needs and desires.

10
Classwork Review Write in your notebook and
answers will be given.

1. What are the three types of engine?
2. Where are steam engines primarily used today?
3. What is known as the capacity for doing work and
   overcoming resistance?

1. Internal Combustion, External Combustion, Gas
Turbine
2. Power plants
3. Energy
11
Classwork ReviewWrite each in your notebook
answer will be given

1. Humans and animals use ________ as energy source.
2. What is work?
3. Whats the equation for work?
4. Where is the power developed in an engine?
5. An engine turns _________ motion into _________
   motion.

Food
Exertion of a force over a given distance.
W F x D (Work Force x Distance)
The cylinder
Linear
Circular
12
Classwork Power Review
Sketch and label the components W P R
C V
Cylinder Wall
Piston
Connecting Rod
Crankshaft
Valves
13
Design Project 1
MOUSE TRAP CAR? DID YOU COMPLETE STEPS 1-4?
Objective To enable you to understand and use
the Engineering Design Process
14
CLASSWORK
Complete steps 1-4 of the mouse trap car
project. Follow the rubric to ensure a high
score.
HYBRID VEHICLES
-Read Technology Explained Hybrid Vehicles.
-On a separate sheet of paper, answer the
questions on the sheet that follow the reading.
15
HOMEWORK
-Finish Hybrid Vehicles Assignment.-Complete
steps 1-7 of the Mouse trap car project.
Follow the rubric to ensure a high
score.-Study for TEST Friday 07, NOV.