1) French invention
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https://www.crosswordclues.com/clue/pitot-tube
A pitot (oʊ {respell|PEE|toh}) tube is a pressure measurement instrument used to measure fluid flow velocity. The pitot tube was invented by the French engineer Henri Pitot in the early 18th century and was modified to its modern form in the mid-19th century by French scientist Henry Darcy. It is widely used to determine the airspeed of an aircra...
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http://en.wikipedia.org/wiki/Pitot_tube
More accurately but less popularly used, Pitot-Static Tube, a small tube most often mounted on the outward leading edge of an airplane wing (out of the propeller stream) that measures the impact pressure of the air it meets in flight, working in conjuction with a closed, perforated, coaxial tube that measures the static pressure. The difference in ...
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http://www.aerofiles.com/glossary.html
(from the article `Pitot, Henri`) French hydraulic engineer and inventor of the pitot tube, which measures flow velocity.The other device is the pitot tube, which is illustrated in Figure 5B. The fluid streamlines divide as they approach the blunt end of this tube, and ... [5 related articles]
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http://www.britannica.com/eb/a-z/p/73
An open ended tube which is connected to a manometer with the other end placed in the airflow enabling total pressure to be measured.
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http://www.encyclo.co.uk/local/20474
A stationary L-shaped tube inserted in a fluid stream, with its opening upstream, and used for measuring the velocity of fluid movement at that point in terms of the pressure developed in the tube by the fluid impinging on it, compared to a second tube opening laterally or downstream. ... (05 Mar 2000) ...
Found on
http://www.encyclo.co.uk/local/20973
Type: Term Pronunciation: pē-tō′ Definitions: 1. a stationary L-shaped tube inserted in a fluid stream, with its opening upstream, and used for measuring the velocity of fluid movement at that point in terms of the pressure developed in the tube by the fluid impinging on it, compared to a second tube opening laterally or downstream....
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http://www.medilexicon.com/medicaldictionary.php?t=94411
[
n] - measuring instrument used to measure the velocity of fluid flow
Found on
http://www.webdictionary.co.uk/definition.php?query=Pitot%20tube
A Pitot tube is a measuring instrument used to measure fluid flow, and more specifically, used to determine airspeed on aircraft. The Pitot tube is named after its inventor, Henri Pitot, and was modified to its modern form by Henry Darcy.
Found on
https://en.wiktionary.org/wiki/Appendix:Glossary_of_aviation,_aerospace,_an
Parts of an airspeed indicator consisting of a tube with an open end exposed to the airstream. The compressed air in the pitot tube is conveyed by a length of tubing to the pilot's cockpit. There the pressure is shown by the airspeed indicator, which gives a reading in terms of miles an hour airspeed.
Found on
https://www.encyclo.co.uk/local/20784
Pitot noun measuring instrument consisting of a right-angled tube with an open end that is directed in opposition to the flow of a fluid and used to measure the velocity of fluid flow
Found on
https://www.encyclo.co.uk/local/20974
Instrument that measures fluid (gas or liquid) flow. It is used to measure the speed of aircraft, and works by sensing pressure differences in different directions in the airstream. It was invented in the 1730s by the French scientist Henri Pitot (1695–1771)
Found on
https://www.encyclo.co.uk/local/21221
More accurately but less popularly used, Pitot-Static Tube, a small tube most often mounted on the outward leading edge of an airplane wing (out of the propeller stream) that measures the impact pressure of the air it meets in flight, working in conjunction with a closed, perforated, coaxial tube that measures the static pressure. The difference in...
Found on
https://www.encyclo.co.uk/local/22323
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