Influence of the Car Movable Aerodynamic Elements on Fast Road Car Cornering

Abstract

In the case of road cars, road safety is the primary factor. The geometry of high-speed road cars has no regulatory restrictions. In addition to the high engine power and effective shape, they can use various types of additional movable aerodynamic elements to adjust their aerodynamic characteristics to the road conditions. Based on the geometry of a two-seater prototype of such a vehicle, a numerical analysis of the influence of a number of additional movable aerodynamic elements on its aerodynamic characteristics was performed. Several of them were installed on the prototype. An electronic system recording a number of motion parameters of the entire car body and some of its movable elements installed on the body was designed and built. The system has been adapted to program the motion of additional aerodynamic elements according to the set algorithms of their activation, temporarily changing the aerodynamic characteristics of the car. An experimental study of the effect of changes in the aerodynamic characteristics of the prototype on its dynamic properties during a drive through a test road section was carried out. It was shown to what extent an average driver can increase the safe speed of the curve of the road using the possibilities of moving aerodynamic elements installed on it.

Mass-Spring System (MSS) 3D simulation of a thin flexible membrane with a new model of the elasticity parameters

“…To sum up, the formula for the value of the spring coefficient consists of the product of two parts (13) (two-parameter model): a fixed part (12), which can be calculated once at the beginning of the simulation (Qi), and a variable part (qi), which must be updated at each time step (14). If the following condition is met:…”

“…also if the strain values are equal to zero, the formula presented above (13) simplifies to the form:…”

“…This additional formula (16) can be used to replace the basic equation (13) to avoid division by zero when there is no strain in the direction under consideration.…”

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An Original Aerodynamic Ducting System to Improve Energy Efficiency in the Automotive Industry

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