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					               Washington County Public Schools / Voluntary State Curriculum
VSC                                                 CO2 Car Project
        Explain that requirements involve the identification of the criteria and constraints of a product or system and the
1.B.7
            determination of how they affect the final design and development.
        Explain that the design process is a systematic, iterative, approach to problem solving that yields design
3.A.1
            solutions.
        Explain that the design process includes defining a problem, brainstorming, researching and generating ideas,
            identifying criteria and specifying constraints, exploring possibilities, selection an approach, developing a
3.A.2
            design proposal, making a model or prototype testing and evaluating a design, using specifications, refining
            a design, creating or making it, and communicating processes and results.
3.A.4   Analyze the phases of the design process
        Explain why designs need to be continually checked and critiqued, and the ideas of the design must be redefined
3.A.5
            and improved.
        Explain that requirements of a design, such as criteria, constraints, and efficiency, sometimes compete with each
3.A.6
            other.
        Describe the personal characteristics involved in engineering at least Creativity, resourcefulness, ability to
3.B.1
            visualize and think abstractly
        Explain that a prototype is a working model used to test a design concept by making actual observations and
3.B.4
            necessary adjustments.
3.B.5   Explain that the process of engineering design takes into account a number of factors.
        Explain constraints on the engineering design process. At Least: Safety, Reliability, Economic Considerations,
3.B.6       Quality Control, Environmental Concerns, Manufacturability, Maintenance, Human Factors Engineering
            (Ergonomics)
        Refine a design by using prototypes and modeling to ensure quality, efficiency, and productivity of the final
3.C.4
             product.
        Evaluate the design solution using conceptual, physical, and mathematical models at various intervals of the
3.C.5
            design process in order to check for proper design and to note areas where improvements are needed
        Washington County Public Schools / Voluntary State Curriculum
                                       CO2 Car Project
3.C.6       Develop and produce a product or system using a design process
3.C.7       Evaluate final solutions and communicate observations, processes, and results of the entire design
    process, suing verbal, graphic, quantitative, visual and written means in addition to three dimensional
    models. At Least: Define the problem, Brainstorm, Research and generate ideas., Identify criteria and
    specify constraints, explore possibilities, select an approach, develop a design proposal, make a model or
    prototype, test and evaluate the design, redesign, create or make it, communicate processes or results.
3.D.1       Select and use the appropriate tools and equipment in: making two-dimensional and three-
    dimensional representations of design solutions, forming and molding processes., machining processes,
    assembly processes
3.D.2       Select and use tools based on the properties of materials
3.D.3       Select and use tools and instruments in the testing and evaluation of design solutions.
4.A.1       Describe the core technologies (mechanical, structural, electrical, electronic, thermal, fluid, optical,
    bio, and material) as they are applied in the designed world.
4.A.2       Analyze the functioning of the core technologies in the designed world. In terms of Common
    components, basic system design, safety, simple controls, system performance evaluation.
4.B.1       Identify and describe application of mechanical technology in the designed world. Such as: Levers,
    Inclined planes, Wedges, Wheels and axles, Pulleys, Screws, Gears, Cams, Linkages
4.B.2       Explain science concepts and mathematic processes applied in mechanical technology such as: Force,
    Motion, Energy, Work, Power, Efficiency, Gravity, Friction
5.D.3       Explain that it is impossible to build an engine to perform work that does not exhaust thermal energy
    to the surroundings
5.D.5       Explain that power systems must have a source of energy, a process, and loads
5.F.1       Explain that transportation plays a vital role in the operation of other technologies, such as
    manufacturing, construction, communication, health and safety, and agriculture.
5.F.2       Analyze transportation systems. Such as: Land, Water, Air, Space
5.F.3       Analyze the role transportation plays in the operation of other enterprises, such as manufacturing,
    construction, communication, health and safety, and agriculture.
 How Fast Can You Go?




Co 2   Car Activity
                Objectives
1. What is CO2?
2. What event with the CO2 is happening to provide an
   energy source to propel your car down the track?
3. What tools will you need to prepare your car?
4. What is the formula for speed?
5. How do you convert feet traveled per second into miles per
   hour?
6. How will aerodynamics play a role?
7. Teachers are your wind machines working?
8. How is your CO2 car impacted by Newton’s laws of
   motion?
9. Record one safety precaution you have taken on each
   piece of equipment you used to build your car.
     The Design Brief
You are the head of the drag racing team
commissioned to design, construct, and race
the fastest drag car of the future, powered by
compact CO2 (carbon dioxide gas) power
plants. In order to enter the championship,
you must design, manufacture, and race your
car using the specified instructions in the
coming slides.
CO2     Car
 Restrictions
    And
 Regulations
      Maximum Sizes



14” long x 3 ½” x 1 ½”
     Minimum Size



8” Long x 3 ½” x 1 ½”
                Restrictions
* Track length = 50 Feet
* 2 Eye hooks on the bottom of the vehicle to serve
   as a guide for the wire
* Pine wood
* CO2 Cartridge must be safely encased in the
   vehicle; Dimensions of Hole ???L X ????W X
   ????H
* Three CO2 cartridges per vehicle best time will be
   counted, you may modify your vehicle between
   runs.
*Creativity in design and décor must be school
   appropriate
*Rubric
  Things To Consider That May
Impact Performance Of Your Car
          Weight
     Aerodynamics
         Friction
          Design
          Shape
 Rules of the competition
Top 3 Times Of The Day
       1 st   2 nd   3 rd

 Mod
  1

 Mod
 2A

 Mod
 2B
                          Review
• What time did your car have for the competition?

• What modifications did you do to your design before production?

• What changes to the design would you do after the competition?

• What were some design flaws you have encountered?

• Could CO2 be used to propel cars on the road today?

• What constraint was the most difficult to follow in your design?

• Was it better to have a lift force or a down force aerodynamics style?
  Why?
    Speed?

   What was
      Your
     Speed
       in
Miles Per Hour?
                       Formula

• Your race time on the Speedway Clock tells you
  that it took ___ seconds to travel 50 feet.
• Can anyone tell the class how to convert your
  speed to miles per hour? Anyone? …The way
  speed limits are measured in cars. Anyone?

• Anyone… Anyone … Anyone…
           » Ben Stein from Ferris Bueller’s Day Off
                 Formula
Here is what is known:

1. The number of seconds it took your car to
   travel 50 feet
2. There is 5,280 feet in a mile
3. There are 3600 seconds in an hour

				
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posted:3/13/2012
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