Peculiarities of aerodynamics of the car in side slip

Abstract

This work is aimed at finding a method of determining the critical angular accelerations for the NISSAN 350Z (at different speeds), at which the car begins to turn and finding ways to adjust the angular acceleration in sliding by dynamically changing the angle of attack of the rear wing.
There is a problem in drifting that affects not only the technical condition of the car, but also the safety of the driver and spectators. The problem is excessive angular acceleration during drifting with tire temperature above the critical point (100-120 degrees), which leads to the loss of control over the car at speeds up to 160 km/h.
The purpose of the research is to determine the method of correcting the angular acceleration of the car during skidding which can be used in the creation of an electronic system automatically changing the angular acceleration of the car during skidding.
The authors, to determine the aerodynamic corrections of angular acceleration while the car is sliding have determined two main research approaches, this is the determination of angular acceleration while sliding and the method of angular acceleration correction.
As a result of the performed work peculiarities of aerodynamics of cars used for drifting were investigated; the calculation of aerodynamic frontal and lateral air resistance while the car is moving was made; the method of finding of angular accelerations while the car is sliding was determined; to determine the approach of aerodynamic correction of angular accelerations of the car at sliding, which can be used for further design of the automatic regulation of angular accelerations and construction of the car model.
For the final confirmation of the results of the article it is necessary to conduct tests, which will consist in blowing the car in wind tunnel (under each wheel will be set the scale), so you can determine the numerical values of the downforce of the rear wing at different angles of attack. Also in the tests it is necessary to conduct a study of the aerodynamics in side slip and the possibility of influencing the angular acceleration (through an increase in load on the rear axle).