PRESSURE TUBE Russian patent published in 1999 - IPC

FIELD: measurement technology, measurement of parameters of spatial flow of liquid and gaseous media, determination of parameters of movement of solids, ships, aircraft relative to fluid media. SUBSTANCE: important feature of invention is that surface of head part of pressure tube in front of peripheral intake holes is manufactured in the form of section with inflection point of generating line and peripheral intake holes proper are located right after section with inflection point on surface that is continuation of head part. Section with inflection point includes concave part of generating line, inflection point and convex part of generating line of surface which are arranged in sequence starting from central intake hole. Such implementation of design makes it possible to enhance precision of pressure measurements and to increase sensitivity of pressure tube to angles of wash and to value of velocity head. EFFECT: enhanced precision of pressure measurements, increased sensitivity of pressure tube to angles of wash and value of velocity head. 1 cl, 4 dwg