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Aerodynamics: Is the study of Air Flow around a moving vehicle. Is the study of Air Flow around a moving vehicle. Good Aerodynamics offer the least resistance.

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Presentation on theme: "Aerodynamics: Is the study of Air Flow around a moving vehicle. Is the study of Air Flow around a moving vehicle. Good Aerodynamics offer the least resistance."— Presentation transcript:

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2 Aerodynamics: Is the study of Air Flow around a moving vehicle. Is the study of Air Flow around a moving vehicle. Good Aerodynamics offer the least resistance. Good Aerodynamics offer the least resistance. Aerodynamics address four main areas of concern. (Frontal Pressure, Lift/Down Force and Drag.) Aerodynamics address four main areas of concern. (Frontal Pressure, Lift/Down Force and Drag.)

3 Drag Enemy of race cars. Drag, is comprised primarily of two forces, Frontal Pressure and Lift / Down Force. These forces if not taken care of by good aerodynamic features can ruin a cars performance.

4 Frontal Pressure and Rear Vacuum Frontal Pressure is caused by the air attempting to flow around the front of the car. Rear Vacuum is caused by the "hole" left in the air as the car passes through it.

5 Lift/Down Force Down force is the same as the lift experienced by airplane wings, only it acts to press down, instead of lifting up. Not to be forgotten, the underside of the car is also responsible for creating a good amount of down force.

6 Aerodynamics in Action Audi A4 Aerodynamics Demonstration aerodynamics-windtunnel_auto HiPTRk

7 Air Flow Through Design

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9 Which is Better?

10 What are the Key Designs on this Vehicle?

11 Aerodynamic Tips Have a minimized frontal area / small grill, to minimize frontal pressure. Have a minimized frontal area / small grill, to minimize frontal pressure. Have minimal ground clearance below the grill, to minimize air flow under the car. Have minimal ground clearance below the grill, to minimize air flow under the car. Converge Bodywork Slowly. Bodywork which quickly converges, forces the air flow into turbulence, and generates a great deal of drag. Converge Bodywork Slowly. Bodywork which quickly converges, forces the air flow into turbulence, and generates a great deal of drag. Have a sloped windshield to avoid pressure build up in front. Have a sloped windshield to avoid pressure build up in front. Have a "Fastback" style rear window and deck, to permit the air flow to stay attached. (Ideally 10° to 30°) Have a "Fastback" style rear window and deck, to permit the air flow to stay attached. (Ideally 10° to 30°) Have a converging "Tail" to keep the air flow attached. Have a converging "Tail" to keep the air flow attached. Have a slightly raked underside, to create low pressure under the car. Have a slightly raked underside, to create low pressure under the car. Cover Open wheels. Open wheels create a great deal of drag and air flow turbulence, similar to the diagram of the mirror above. Cover Open wheels. Open wheels create a great deal of drag and air flow turbulence, similar to the diagram of the mirror above.

12 Current Land Speed Record Thrust SSC Thrust SSC 763MPH at Black Rock Desert in Nevada, USA, on 15 October MPH at Black Rock Desert in Nevada, USA, on 15 October Driven by Andy Green Driven by Andy Green


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