A Pitot tube is a measuring instrument used to measure fluid flow. The Pitot tube is named after its inventor, Henri Pitot, and was modified to its modern form by Henry Darcy.
Pitot tube
The basic instrument consists of two coaxial tubes: the interior tube is open to the flow, whilst the exterior tube is open at ninety degrees to the flow. A manometer can be used to meassure the difference between these two pressures and using Bernoulli's equation the flow rate of the fluid can be calculated.
Pitot tubes on aircraft
Pitot tubes are used on aircraft to measure the craft's airspeed. The tube is parallel to the aircraft's longitudinal axis, and is typically mounted on the wing of small aircraft and on a pylon on the body of larger aircraft. On aircraft, static pressure is typically measured through a port on the side of the fuselage instead of on the pitot tube itself. Most pitot tubes have a heating device to prevent freezing and ice build up.
The Apex Instruments Type ‘S’ 2-Dimensional Probe is used in Method 2G to measure the velocity pressure and the yaw angle of the flow velocity vector in a stack or duct.
The average gas volumetric flow rate in the stack or duct is then determined from the average near-axial velocity.The four foot type “S” pitot with thermocouple well is constructed from heavy wall 3/8 inch stainless steel tubing and sheathed with 1inch tubing.
The pitot tube must be calibrated in accordance with Method 2G prior to use.
A Pitot tube, invented by Henri Pitot and modified to its modern form by Henry Darcy, is a measuring instrument used to measure fluid flow.
Pitot tubes are commonly found on aircraft and are used to measure the speed of the aircraft through the air.
A pressure transducer contrasts the pressure from the pitot tube with the static pressure (which is input through a small hole that is usually on the side of the aircraft and facing perpendicular to the wind) to compute the relative air speed of the aircraft.
Feeds |
Contact