A convenient method for the measurement of the complete velocity vector in subsonic three-dimensional flow using a simple three-tube off set-geometry pressure probe is presented. Basically, this probe is a combination of a total head tube and a Conrad probe. In order to use this probe to determine both the magnitude of the velocity vector at a point in the flow field and the two angles which determine the orientation of this velocity vector it is only necessary to rotate the probe about its longitudinal axis. Measurements obtained with the present probe compare very favorably with those obtained using other techniques. The probe will be specially suited for measuring velocity in flows with steep velocity gradients.

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