AIR-PRESSURE SENSOR

摘要

An air-pressure head is intended for determining parameters of an air flow, flow of other gases or fluids, as well as parameters of flight of the aircraft. The air-pressure head consists of a multi-edge rod, whose edges are oriented in the rod longitudinal direction, having groups of orifices disposed between the edges on smooth lateral surfaces of the rod which are connected via pneumatic ducts to outlet nipples disposed off the air flow. Edges in the longitudinal direction are continuous and their number is n > 3. Groups of orifices are spaced from the edges at the value of a ≤0.1b, where b is the distance between the edges in any cross-section of the rod. The angle between the lateral surfaces in any cross-section of the rod being gamma < 180 DEG . Sharp edges can be rounded or rendered obtuse by chamfering and also can be implemented in the form of protrusions. The rod lateral surfaces can be convex, cylindrical and tapered. The number of edges on the rod can be 4, 5 or 6. Such parameters of the air-pressure head allow: to improve accuracy of flow (flight) parameters, simplify the design and reduce its weight.