Do Car Spoilers Prevent Vehicles from Taking Flight?

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SUMMARY

Spoilers on vehicles serve primarily to reduce lift and enhance traction at high speeds, particularly for rear-wheel-drive cars. While they can add drag, which may slightly decrease acceleration, their main function is to stabilize the vehicle during high-speed maneuvers. Spoilers are often misunderstood, with many believing they are purely aesthetic; however, they play a crucial role in performance for racing and high-performance vehicles. The effectiveness of a spoiler depends on its design and the specific vehicle dynamics.

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  • #31
According to the Bernoulli's Effect "The pressure in a fluid decreases with increased velocity of the fluid. (The faster the liquid moves, the lesser is the pressure in that liquid.)"
So the air must travel faster across the top of the car, decreasing the pressure, causing the car to have more lift from the less dense air. there is no kind of new upward pressure toward the bottom of the car.
Yes there is upward pressure on the bottom of the car, but it does not increase.
 

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