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Encounter – The Audi Technology Magazine 2/2015
From the Audi R8 to the R18 e-tron quattro, Audi has been dominating endurance racing and the 24 Hours of Le Mans for the past decade and a half – and aerodynamics have always been an important part of the winning package. While the closed cockpit has been the better solution since 2011, Audi’s victories from 2000 until 2010 were achieved with open prototypes. The R15 had a ten-cylinder TDI with 5.5 liters of displacement and an output of around 600 hp.
In a race car, perfect aerodynamics always mean the perfect balance between downforce and drag. The most significant “disturbance variables” are the wheels. The most important element is the underbody, which looks so simple on the photo. Nevertheless, this is where 70 percent of the total downforce is generated.