aerodynamics what is aerodynamics? aerodynamics is the study of the affect of airflow on a body. the...
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What is Aerodynamics?
• Aerodynamics is the study of the affect of airflow on a body.
• The body may be anything that moves through air or has air moving past it.
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What is Aerodynamic Drag?
When an object is moving through the air, its motion is resisted by air flow. This resistance is called drag.
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How is Aerodynamic Efficiency Measured?
• An object’s aerodynamic efficiency, or how easily it moves through the air, is determined using a unit of measure called coefficient of drag, or Cd.
• This Cd is multiplied by the frontal area of the object to figure out aerodynamic efficiency. The smaller the frontal area, the more aerodynamic the object can be.
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Testing Aerodynamic Efficiency
Technicians measure how aerodynamically efficient an object is by testing it in a Wind Tunnel.
http://www.youtube.com/watch?v=2CYUuBiW_lY
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What Are The Effects of Drag?
• The amount of drag determines the maximum possible speed.
• It determines the fuel efficiency of the vehicle.
• It determines how well the vehicle will handle.
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Car BodiesThe purpose of a car
body is to do three things:
1. Provide protection from the elements, impact and debris.
2. Fuel efficiency and handling through aerodynamics.
3. Styling
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The Evolution Of The Car Body
First Ford 1928 Pearce
1955 Chevrolet 1963 Mustang
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Toyota MR2 Dodge Viper
Modern Designs
GM Concept VehicleWorld Speed Record Competitor
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Formula One Car Aerodynamics
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Modern Materials used in Transportation
Technology.• Carbon Fibre• Plastics • Fibreglass• Aluminum• Magnesium• Titanium• Kevlar• Composites (more than one material)