A measuring system for determining an air data for an aircraft includes a measuring device for determining measured variables which are a function of the resulting flow vector and the inertia forces acting on a front fuselage section in relation to a rear fuselage section, an acceleration transducer, and an evaluation unit for determining the air data from the measured variables. In one embodiment, the photo-detector has a diamond shape, a modified-diamond shape, or an hourglass shape. The intermediate transform matrix is such that voxels in the volume data set map to pixels in an intermediate image in which neighboring voxels in a plane of the volume data set which is most parallel to tie plane of the output image are separated by an integer number of pixel along each of tie axes of the intermediate image. In use, resistive force applied against the front surfaces of the blades moves the blades together. The ball may be produced by forming a pair of half shells having inner surfaces defining corresponding portions of the cavity of the outer shell, forming the outer details on the outer surface of at least one of the half shells, and foaming a polymeric material to form the core. The conduits that are arranged in the individual areas can be connected to users having different temperature levels.