Fundamental principles

The aforementioned assumption that allows an aeroplane to acceleration off the arena by creating lift from its wings is acclimated in about-face to administer force that presses the chase car adjoin the apparent of the track. This aftereffect is referred to as "aerodynamic grip" and is acclaimed from "mechanical grip," which is a action of the car accumulation repartition, tires and suspension. The conception of downforce by acquiescent accessories about consistently can alone be accomplished at the amount of added aerodynamic annoyance (or friction), and the optimum bureaucracy is about consistently a accommodation amid the two. The aerodynamic bureaucracy for a car can alter appreciably amid chase tracks, depending on the breadth of the straights and the types of corners; some drivers aswell accomplish altered choices on setup. Because it is a action of the breeze of air over and beneath the car, and because aerodynamic armament access with the aboveboard of velocity, downforce increases with the aboveboard of the car's acceleration and requires a assertive minimum acceleration in adjustment to aftermath a cogent effect. But some cars accept had rather ambiguous aerodynamics, such that a accessory change in bend of advance or acme of the car and this can could could cause ample changes in the downforce. In the actual worse cases this can could could cause the car to acquaintance lift, not downforce, for example, acquired by a bang on the clue or slipstreaming over a crest, and sometimes can accept adverse consequences. A belled archetype of this was Peter Dumbreck's Mercedes-Benz CLR in the 1999 Le Mans 24 hours, which addled spectacularly afterwards carefully afterward a adversary car over a hump.

Two primary apparatus of a antagonism car can be acclimated to actualize downforce if the car is travelling at antagonism speed:

the appearance of the body, and

the use of airfoils.

Most antagonism formulae accept a ban on aerodynamic accessories that can be adapted during a race, except at pit stops.

The basal console of the Panoz DP01 ChampCar announcement circuitous aerodynamic design.

The base curves of the Panoz DP01 ChampCar.

The blueprint for downforce of a addition is accustomed by:

Where:

D is downforce in newtons

WS is wingspan in metres

H is acme in metres

AoA is bend of attack

F is annoyance coefficient

ρ is air body in kg/m³

V is acceleration in m/s