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Fluid Technology

Fluid Technology. Fluid Technology. The technology of using fluid, either gaseous (pneumatics) or liquid (hydraulic), to apply force or to transport. Example of a simple form of a fluid technology system: Bicycle pump. All fluid systems have two things in common.

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Fluid Technology

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  1. Fluid Technology

  2. Fluid Technology • The technology of using fluid, either gaseous (pneumatics) or liquid (hydraulic), to apply force or to transport. • Example of a simple form of a fluid technology system: • Bicycle pump.

  3. All fluid systems have two things in common. • Each system contains a fluid, either liquid or gas, that moves through a system. • A pressure difference in the system creates force, which causes fluids to move or perform some special function like pushing a piston or opening or closing a valve.

  4. States of matter • Solids- Atoms tightly bound together , • have a definite shape and volume. • Liquids- atoms touch but have the ability to move • has volume but no defined shape • Gas- very low density • have no defined volume or shape

  5. Pneumatic Drive Systems • Advantage • Uses inexpensive compressed air to operate • Good for clamping work pieces

  6. Pneumatic Drive Systems • Disadvantage • Speed and position not easily controlled

  7. Hydraulic Drive Systems Advantage • Compact • Allows for high levels of force and power, combined with accurate control • Converts forces from a liquid into rotational or linear forces

  8. Hydraulic Drive Systems • Disadvantage • Messy. Fluid may contaminate parts, mess up other handling machines, and may not take a finish. • Not environmentally friendly – fluid can be toxic. • May require costly clean up and disposal.

  9. Aerodynamics • The study of the flow of fluid around solid objects of various shapes

  10. 4 basic principles of AerodynamicsA. LiftB. ThrustC. WeightD. Drag

  11. Newton’s Second Law F = ma F = force m = mass a = acceleration For a fast car, you need: -Big force -Light car Speed = Distance / Time

  12. Newton’s Third Law "For every action, there is an equal and opposite reaction.” Drag Thrust

  13. CO2 Car Project Write the following in your journal

  14. Problem • You need to design the fastest car possible

  15. Material • One block of wood • Two eye hooks • Wheels & Axels

  16. Constraints • 1.) Car must have a CO2 chamber that is 1.5” deep and set ½” below top of block • 2.) Car cannot be shorter in length than 5” • 3.) Axles cannot be more than ¼” high • 4.) Car must employ aerodynamic principles

  17. Hint #1 • The #1 most important factor in the speed of you dragster car is… • Mass • Cars with less mass go much faster!

  18. Hint #2 • Thanks to our friend gravity, everything has friction. • Since we can’t eliminate friction, how can we reduce it?

  19. Reducing Friction • Make sure the axle & tires are free to rotate. • Make sure the wheels are not rubbing on the car body. • Be sure to install your eye-hooks properly. • Poorly aligned eye-hooks are often the cause of a slow car.

  20. Grading • Your car will be graded on the following rubric • Meets constraints _____ / 10 • Evidence of planning _____ / 10 • Time Trials _____ / 10 • Alignment _____ / 10 • Reflection questions _____ / 10

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