Patent ID: 8813577
Filing Date: 2014-08-26
Classification: G01F

Abstract:
1. A compressed-flow generation device for use in making differential measurements of flow attributes, comprising: a flow obstruction having a forward portion and an aft portion, said forward portion consisting of a nose cone having a sealed minimum-radius tip and a maximum-radius portion, said aft portion coupled to said maximum-radius portion; a support arm having a first end and a second end, said first end adapted to be coupled to an exterior wall of a conduit, said second end coupled to said forward portion of said flow obstruction, wherein said support arm is adapted to position said flow obstruction in the conduit wherein a flow region is defined around said maximum-radius portion, and wherein said first end and said second end are separated from one another with respect to a length dimension of the conduit; at least one upstream measurement port formed in said support arm; a first manifold formed in said support arm and in fluid communication with said at least one upstream measurement port, said first manifold terminating and accessible at the exterior wall of the conduit; at least one downstream measurement port formed in said flow obstruction; and a second manifold formed in said flow obstruction and said support arm, said second manifold in fluid communication with said at least one downstream measurement port, said second manifold terminating and accessible at the exterior wall of the conduit.