Importance

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Abstract

A traverse probe for insertion transversely with respect to the direction of bulk flow of an air or gas stream to sense and average a traverse of the static pressure and separately to sense and average a traverse of the combination of static and velocity pressure or total pressure of the stream. The probe includes along its length a spaced set of total pressure ports in the tube wall substantially aligned with the direction of flow in the zone of positive total pressure at the tube wall facing the direction of flow and first and second spaced sets of static pressure ports in the tube wall, one set aligned in each of the zones of static pressure only that lie at the tube wall adjacent to and on each side of the zone of positive total pressure. The set of total pressure ports is aligned on the bisector of the included angle between the sets of static pressure ports where the included angle is in the range of about 78.degree.-80.degree. for useful probe diameters.

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First Claim