Aerodynamic Lift-off of Closed Wheel Racing Vehicles

Paper #:
  • 2017-01-1516

Published:
  • 2017-03-28
Abstract:
Although, the implementation of lift-off prevention devices such as the NASCAR roof flaps have greatly reduced the frequency and severity of race vehicle aerodynamic lift-off incidents, airborne incidents still occur occasionally in motorsports. In many cases, contact with another vehicle contributes to the lift-off. Race vehicle aerodynamic lift-off incidents are analyzed and factors contributing to aerodynamic lift-off of various race vehicles are discussed in this paper. This is done by using aerodynamic lift data from wind tunnel testing for various NASCAR race vehicles, such as NASCAR stock cars and trucks, and sports car prototypes. The effectiveness of existing lift-off prevention measures and future trends in lift-off prevention are discussed. The results and analysis presented in this paper will be of paramount interest to the race vehicle designers and sanctioning bodies because the effects of aerodynamic coefficients, speed, mass, and ride height on lift-off need to be comprehended, but there exists a scarcity of reliable data in this area.
Also in:
  • SAE International Journal of Passenger Cars - Mechanical Systems - V126-6EJ
  • SAE International Journal of Passenger Cars - Mechanical Systems - V126-6
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