Apparatus for determining forces and moments acting on motor vehicles in a wind tunnel

摘要

The invention relates to a belt unit in a wind tunnel balance for motor vehicles, in particular for determining forces and moments acting on a motor vehicle in a wind tunnel, wherein an area exposed to wind is minimized by means of a trapezoidal support, which is raised with respect to a normal zero position, and appropriately adapted test stand covers. The wind-exposed area of the endless belt of the belt test stand can be reduced here to a value which is only slightly above the necessary wheel contact area (tire shuffle). As a result, error forces can be reduced further, so that the result is highly increased measurement accuracy.

主权项

1. A belt unit for motor vehicles, in particular for determining forces and moments acting on a motor vehicle in a wind tunnel, comprising
at least one belt unit which has a first drum and a second drum, wherein an endless belt is wrapped around the first and second drums, and a support which supports the endless belt and is arranged below a carrying run of the endless belt between the first and second drums, wherein the support has a top side which is arranged by a predetermined distance AL above an upper tangential connecting line of the drum outer surfaces, and a test stand cover is provided that has a surface which is flush with the top side of the support with the endless belt arranged thereon.