0
A pitot tube is used to measure local velocity in a flowing fluid. The pitot tube
hole must face the flowing fluid. The local velocity, u , is given by :
u = SQRT [ ( delta P ) ( 2 ) ( g sub C ) / ( rho ) ]
Wiki User
∙ 9y ago
Add your answer:
Earn +20 pts
Who invented type of pressure measuring instrument in 18th century in France?
Pitot Tube
What is pitot tube cover?
A PITO tube is used to measure airspeed of the plane. The covers are put over the tubes when the aircraft is going to be on the ground for an extended period of time, and are removed before takeoff. They are there to prevent tube blockages, leading to airspeed failure, which (and it has happened) could mean a possible accident.
What is the difference between a manometer and a pitot?
A manometer is a device for measuring pressures, especially the word is used for pressure meters that are constructed to use a liquid in a transparent U-tube. A peizometer is specifically about measuring pressures in ground water wells.
What is the rotameter orificemeter venturi meter pitiot tube i want to question related to these and answers?
AnswerThese are used to measure flow rate.Orifice PlateWith an orifice plate, the fluid flow is measured through the difference in pressure from the upstream side to the downstream side of a partially obstructed pipe. The plate obstructing the flow offers a precisely measured obstruction that narrows the pipe and forces the flowing fluid to constrict.The orifice plates are simple, cheap and can be delivered for almost any application in any material.The TurnDown Rate for orifice plates are less than 5:1. Their accuracy are poor at low flow rates. A high accuracy depend on an orifice plate in good shape, with a sharp edge to the upstream side. Wear reduces the accurVenturi TubeDue to simplicity and dependability, the Venturi tube flowmeter is often used in applications where it's necessary with higher TurnDown Rates, or lower pressure drops, than the orifice plate can provide.In the Venturi Tube the fluid flowrate is measured by reducing the cross sectional flow area in the flow path, generating a pressure difference. After the constricted area, the fluid is passes through a pressure recovery exit section, where up to 80% of the differential pressure generated at the constricted area, is recovered.With proper instrumentation and flow calibrating, the Venturi Tube flowrate can be reduced to about 10% of its full scale range with proper accuracy. This provides a TurnDown Rate 10:1.Variable Area Flowmeter or RotameterThe rotameter consists of a vertically oriented glass (or plastic) tube with a larger end at the top, and a metering float which is free to move within the tube. Fluid flow causes the float to rise in the tube as the upward pressure differential and buoyancy of the fluid overcome the effect of gravity.The float rises until the annular area between the float and tube increases sufficiently to allow a state of dynamic equilibrium between the upward differential pressure and buoyancy factors, and downward gravity factors.The height of the float is an indication of the flow rate. The tube can be calibrated and graduated in appropriate flow units.The rotameter meter typically have a TurnDown Ratio up to 12:1. The accuracy may be as good as 1% of full scale rating.Magnetic floats can be used for alarm and signal transmission functions.Pitot TubesThe pitot tube are one the most used (and cheapest) ways to measure fluid flow, especially in air applications as ventilation and HVAC systems, even used in airplanes for the speed measurent.The pitot tube measures the fluid flow velocity by converting the kinetic energy of the flow into potential energy.The use of the pitot tube is restricted to point measuring. With the "annubar", or multi-orifice pitot probe, the dynamic pressure can be measured across the velocity profile, and the annubar obtains an averaging effect.
How does a hydraulic gauge work?
Normally using a calibrated bellows or bourdon tube. As pressure is sensed by the device it inflates the tube or bellow which in turn causes the needle to rotate. Pre-seventies pitot and static systems on aircraft use this very technology to relay information like true air speed to the pilots.
Who is Emil Daiber?
he invented the heater from the pitot tube.
What does it mean when the airspeed indicator reads zero while in flight?
It means that for some reason ram-air is not being allowed into the pitot tube, or the static air system has become clogged in some other way. Most commonly this is caused by forgetting to remove the pitot cover, failing to turn on the pitot heater when necessary, or by a bird or bug strike on the pitot tube. If it can be visually verified that the pitot cover has been removed, the pilot should engage the pitot heat. If there is a backup gauge serviced by a separate system, then that should be used.
What is the name of the device detect the speed of an aeroplane?
It is called Pitot Tube. It measures fluid flow velocity. The results are displayed on the Airspeed Indicator.The pitot tubes detect the speed of the plane.
What instruments are affected if the pitot tube freezes over?
airspeed indicator
What is the piece that sticks out on the front of the mirage?
A pitot tube. It's a pressure measurement instrument used to measure fluid flow velocity.
Application of U-tube manometer?
@used to measure pressure in pitot or orfices located in the airflow in air handling or ventilation system..
Which are the other methods or devices use for the measurement of speed?
Jets use a pitot tube.
What uses Bernoullis principle?
Pitot tube on a plane to measure airspeed.
Who invented type of pressure measuring instrument in 18th century in France?
Pitot Tube
Which instrument is used to measure the pressure of gases?
A Barometer is one, a manometer another. In aircraft, a Pitot Tube is used to infer velocity. Otherwise, tyre gauges and other pressure gauges are appropriate in their sphere. A Bourdon Tube gauge is a common configuration.
How speed calculated in aircraft?
One way to measure airspeed is to use a device called a pitot tube.
What is the tool use to measure speed?
An anemometer is used to measure wind speed. A Pitot Tube is used to infer speed in an aeroplane,. A speedometer in an ordinary car, and a microwave or laser radar in a Police car.
