Abstract
The competition in the aerodynamics development in the wind tunnel between F1 teams has been heating up in the last decade, which requires extremely accurate and repeatable results. In addition, its development pace is extremely rapid in order to catch up with the race schedule, in which the race takes place at least twice a month during the season. It means that the process of the wind-tunnel development must be highly efficient so that the track performance of the F1 machine should improve every race by aerodynamic updates. In this paper, some unique technologies are described in detail, by looking back the history of the F1 development at Toyota Motorsport GmbH (TMG). It includes the wind tunnel measurement system, the detail scale-model, F1's first PIV system, and other activities to improve the model configurations and experimental conditions to match the real world.