Accession Number : ADD018543

Title :   Orthogonal Shear Stress Measurement Probe Assembly for Boundary Layer Flow.

Descriptive Note : Patent, Filed 19 June 95, patented 22 Apr 97,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Bandyopadhyay, Promode R

Report Date : 22 Apr 1997

Pagination or Media Count : 9

Abstract : An orthogonal shear stress measurement probe assembly is provided for measurements away from a solid surface or a vehicle wall. The assembly includes a plurality of micron-sized floating element drag sensors mounted on a 2 mm stainless steel needle. The needle is in turn supported by a streamlined probe which provides both a support for the needle-drag sensor assembly and a conduit for electrical lead. The electrical leads connect the drag sensing elements, which contain piezo-resistive elements, to an external portion of a bridge. These resistive elements form one-half of a bridge. the remaining bridge elements, amplifiers, read-out circuits and power supply are located outside the probe.

Descriptors :   *SHEAR STRESSES, *ORTHOGONALITY, *BOUNDARY LAYER FLOW, *FLOATING BODIES, DETECTION, DETECTORS, SOLIDS, SURFACES, POWER SUPPLIES, WALLS, VEHICLES, CIRCUITS, DRAG, READ OUT TECHNIQUES, BRIDGES, ELECTRIC CONNECTORS

Subject Categories : Theoretical Mathematics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE