Pitot Static Tube Measures

The pitot tube is a simple and convenient instrument to measure the difference between static total and dynamic pressure or head.

Pitot static tube measures.

Pitot tubes were invented by henri pitot in 1732 to measure the flowing liquid or air velocity. It is measured at right angles to the flow direction preferably in a low turbulence location figure 2. The static and the total impact pressure. Pitot tubes also called pitot static tubes are used to measure fluid velocity at a point in a fluid.

The pitot static tube is mounted on the aircraft or in a wind tunnel so that the center tube is always pointed in the direction of the flow and the outside holes are perpendicular to the center tube. It measures the local velocity of flow at a particular point within a pipe rather than the average flow velocity as measured by other types of flowmeter. They are commonly used to measure air velocity but can be use to measure the velocity of other fluids as well. Other instruments that might be connected are air data computers flight data recorders altitude encoders.

The static pressure is the operating pressure in the pipe duct or the environment upstream to the pitot tube. A pitot static system is a system of pressure sensitive instruments that is most often used in aviation to determine an aircraft s airspeed mach number altitude and altitude trend a pitot static system generally consists of a pitot tube a static port and the pitot static instruments. This difference called the dynamic pressure can be used. The head δ h or pressure difference δ p can be measured and calculated with the help of u tube manometers electronic pressure transmitters or similar instrumentation.

Basically a differential pressure d p flowmeter a pitot tube measures two pressures. The static and the total impact pressure. On some airplanes the pitot static tube is put on a longer boom sticking out of the nose of the plane or the wing. Basically a differential pressure d p flowmeter a pitot tube measures two pressures.

The pitot tube is used to measure the difference between stagnation pressure and static pressure at a point in the fluid. The pitot static tube is mainly used for making temporary measurements of flow although it is also used in some instances for permanent flow monitoring.