I have long been wondering what is the official name of this little air intake tube located in front of the fan blades and its intended functions. I did search it on google but it was in vain. I guess that it may be a pitot tube installed inside a jet engine for gauging the airspeed of the engine intake air.
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1$\begingroup$ It is not a pitot tube because it is open on both ends, and pitot tubes are only open on one end(with the exception of a water drain hole which is several times smaller than the main opening). It is more of a specialized static-pressure port. $\endgroup$– Max PowerMar 9, 2019 at 22:28
2 Answers
That's the EPR inlet pressure sensor (there's another one located aft of the engine in the exhaust).
EPR = Engine Pressure Ratio, one way to measure thrust.
(source)
See also:
One will be the P2 (pressure) sensor, the other will be T2 (temperature)
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1$\begingroup$ This could be improved by explaining the purpose of these sensors. $\endgroup$– foootApr 10, 2019 at 15:29