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AERODYNAMICS IN CARS

AERODYNAMICS IN CARS. INTRODUCTION. AERODYNAMICS : Study of forces generated by motion of air on moving body. CLASSIFACATION OF AERODYNAMICS : external and internal, subsonic , supersonic , hypersonic FIELDS OF APPLICATION :

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AERODYNAMICS IN CARS

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  1. AERODYNAMICS IN CARS

  2. INTRODUCTION • AERODYNAMICS : Study of forces generated by motion of air on moving body. • CLASSIFACATION OF AERODYNAMICS : external and internal, subsonic , supersonic , hypersonic • FIELDS OF APPLICATION : aerospace engineering, design of automobiles , ships , civil engineering , design of bridges etc.

  3. AERODYNAMIC FORCES ON A BODY • LIFT (DOWNFORCE) • DRAG • WEIGHT • THRUST

  4. HISTORY OF EVOLUTION OF AERODYNAMICS IN CARS • DESIGN’S IN EARLY 20th CENTURY: cars with low speeds, no aerodynamic problems. • CAR’S IN THE EARLY 50’s: cars designed for big family’s , complete negligence of aerodynamics. • CARS AFTER 70’s: fuel crisis , need of economic designs , evolution of aerodynamics.

  5. WHY WE NEED TO IMPROVE AERODYNAMICS IN CARS • SPEED better aerodynamics higher will be the speeds. • FUEL EFFICIENCY better aerodynamics , less work for engine.

  6. Aerodynamics to make the efficient even more efficient!

  7. Mythbusters – Tailgait down or up?

  8. Mythbusters – Tailgait down or up?

  9. AERODYNAMICS IN MCLAREN F1 • SPECIFICATIONS • FRONT END • REAR END • SCOOPS • WINGS Mclaren F1

  10. AERODYNAMIC DEVICES • SPOILERS • NACA DUCTS • Increase rate of flow • To expose air to areas not exposed to direct air flow.

  11. METHODS TO EVALUATE AERODYNAMICS IN CARS • WIND TUNNELS • Research tool to study effect of air moving over a solid object. • Trial and error process. • Special pressure paints for analysis. • Detailed analysis of air flow patterns. • Analyzing for the optimal design.

  12. AERODYNAMIC IMPROVEMENTS IN THE CAR THAT WE ALREADY OWN • Keep your vehicle washed and waxed • Remove mud flaps behind wheels • Place license plate out of air flow • Avoid roof-racks or carriers • Close windows, close sunroof

  13. CONCLUSION • Aerodynamics in cars is a factor in the over all performance of the car, it should never be compromised.

  14. THANK YOU

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  18. FRONT END • FRONTAL PRESSURE • PRESSURE DIFFERENCE • MINIMISE FRONTAL AREA • REDUCE cd Back

  19. SCOOPS • ENGINE COOLING • INCREASESFLOW RATE OF AIR Back

  20. REAR END • REAR VACUM • FLOW DETACHEMENT • TURBULANCE Back

  21. WINGS • PRODUCE DOWNFORCE • REDUCE DRAG Back

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  24. COEFFICIENT OF DRAG • Drag = 1/2xd x Cd x A Xv2 • Measure of aerodynamic efficiency. Back

  25. SPECIFICATIONS • EngineType:V12 • Curb Weight : 1100 kg. • Displacement:6064 cc • Horsepower:627 bhp @ 7400 rpm • Torque:479 lb-ft @ 4000 rpm • Performance0-60 mph:3.2 sec • 0-100 mph:6.3 sec • Top Speed:240 mph /hr BACK

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