What is this tube in a jet engine's air intake?












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enter image description here



enter image description here



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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    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 Power
    3 hours ago


















6












$begingroup$


enter image description here



enter image description here



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.










share|improve this question









New contributor




N.L. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$








  • 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 Power
    3 hours ago
















6












6








6





$begingroup$


enter image description here



enter image description here



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.










share|improve this question









New contributor




N.L. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$




enter image description here



enter image description here



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.







jet-engine feature-identification inlet sensors






share|improve this question









New contributor




N.L. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









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N.L. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









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share|improve this question








edited 7 hours ago









ymb1

66.8k7212354




66.8k7212354






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asked 11 hours ago









N.L.N.L.

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New contributor





N.L. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






N.L. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.








  • 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 Power
    3 hours ago
















  • 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 Power
    3 hours ago










1




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 Power
3 hours ago






$begingroup$
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 Power
3 hours ago












1 Answer
1






active

oldest

votes


















7












$begingroup$

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.



enter image description here

(source)



Also worth reading as pointed out by ymb1 :



How does the EPR reading behave in reverse, and in reheat modes?
and
What is the difference between EPR and rotor speed as thrust setting parameter?






share|improve this answer











$endgroup$









  • 1




    $begingroup$
    Related: How does the EPR reading behave in reverse, and in reheat modes? and What is the difference between EPR and rotor speed as thrust setting parameter?
    $endgroup$
    – ymb1
    7 hours ago












  • $begingroup$
    Thanks ymb1. Should I add those links by editing my answer ? It appears, they are already listed as related on the right panel.
    $endgroup$
    – Karl Stephen
    6 hours ago










  • $begingroup$
    They appear under 'Linked' because I've linked them in a comment ;) the same will happen if you link them in the answer. It's just a see also kind of thing – if you want to edit them in (your call), let me know and I'll delete my comment.
    $endgroup$
    – ymb1
    6 hours ago










  • $begingroup$
    It's allright. Leaving your comment just right there makes sense. My only concern about not adding them in the answer is they may get missed by someone who doesn't have the time to read the comments aswell. So, I'll add them anyway. :) Thanks again.
    $endgroup$
    – Karl Stephen
    1 hour ago











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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









7












$begingroup$

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.



enter image description here

(source)



Also worth reading as pointed out by ymb1 :



How does the EPR reading behave in reverse, and in reheat modes?
and
What is the difference between EPR and rotor speed as thrust setting parameter?






share|improve this answer











$endgroup$









  • 1




    $begingroup$
    Related: How does the EPR reading behave in reverse, and in reheat modes? and What is the difference between EPR and rotor speed as thrust setting parameter?
    $endgroup$
    – ymb1
    7 hours ago












  • $begingroup$
    Thanks ymb1. Should I add those links by editing my answer ? It appears, they are already listed as related on the right panel.
    $endgroup$
    – Karl Stephen
    6 hours ago










  • $begingroup$
    They appear under 'Linked' because I've linked them in a comment ;) the same will happen if you link them in the answer. It's just a see also kind of thing – if you want to edit them in (your call), let me know and I'll delete my comment.
    $endgroup$
    – ymb1
    6 hours ago










  • $begingroup$
    It's allright. Leaving your comment just right there makes sense. My only concern about not adding them in the answer is they may get missed by someone who doesn't have the time to read the comments aswell. So, I'll add them anyway. :) Thanks again.
    $endgroup$
    – Karl Stephen
    1 hour ago
















7












$begingroup$

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.



enter image description here

(source)



Also worth reading as pointed out by ymb1 :



How does the EPR reading behave in reverse, and in reheat modes?
and
What is the difference between EPR and rotor speed as thrust setting parameter?






share|improve this answer











$endgroup$









  • 1




    $begingroup$
    Related: How does the EPR reading behave in reverse, and in reheat modes? and What is the difference between EPR and rotor speed as thrust setting parameter?
    $endgroup$
    – ymb1
    7 hours ago












  • $begingroup$
    Thanks ymb1. Should I add those links by editing my answer ? It appears, they are already listed as related on the right panel.
    $endgroup$
    – Karl Stephen
    6 hours ago










  • $begingroup$
    They appear under 'Linked' because I've linked them in a comment ;) the same will happen if you link them in the answer. It's just a see also kind of thing – if you want to edit them in (your call), let me know and I'll delete my comment.
    $endgroup$
    – ymb1
    6 hours ago










  • $begingroup$
    It's allright. Leaving your comment just right there makes sense. My only concern about not adding them in the answer is they may get missed by someone who doesn't have the time to read the comments aswell. So, I'll add them anyway. :) Thanks again.
    $endgroup$
    – Karl Stephen
    1 hour ago














7












7








7





$begingroup$

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.



enter image description here

(source)



Also worth reading as pointed out by ymb1 :



How does the EPR reading behave in reverse, and in reheat modes?
and
What is the difference between EPR and rotor speed as thrust setting parameter?






share|improve this answer











$endgroup$



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.



enter image description here

(source)



Also worth reading as pointed out by ymb1 :



How does the EPR reading behave in reverse, and in reheat modes?
and
What is the difference between EPR and rotor speed as thrust setting parameter?







share|improve this answer














share|improve this answer



share|improve this answer








edited 1 hour ago

























answered 8 hours ago









Karl StephenKarl Stephen

701310




701310








  • 1




    $begingroup$
    Related: How does the EPR reading behave in reverse, and in reheat modes? and What is the difference between EPR and rotor speed as thrust setting parameter?
    $endgroup$
    – ymb1
    7 hours ago












  • $begingroup$
    Thanks ymb1. Should I add those links by editing my answer ? It appears, they are already listed as related on the right panel.
    $endgroup$
    – Karl Stephen
    6 hours ago










  • $begingroup$
    They appear under 'Linked' because I've linked them in a comment ;) the same will happen if you link them in the answer. It's just a see also kind of thing – if you want to edit them in (your call), let me know and I'll delete my comment.
    $endgroup$
    – ymb1
    6 hours ago










  • $begingroup$
    It's allright. Leaving your comment just right there makes sense. My only concern about not adding them in the answer is they may get missed by someone who doesn't have the time to read the comments aswell. So, I'll add them anyway. :) Thanks again.
    $endgroup$
    – Karl Stephen
    1 hour ago














  • 1




    $begingroup$
    Related: How does the EPR reading behave in reverse, and in reheat modes? and What is the difference between EPR and rotor speed as thrust setting parameter?
    $endgroup$
    – ymb1
    7 hours ago












  • $begingroup$
    Thanks ymb1. Should I add those links by editing my answer ? It appears, they are already listed as related on the right panel.
    $endgroup$
    – Karl Stephen
    6 hours ago










  • $begingroup$
    They appear under 'Linked' because I've linked them in a comment ;) the same will happen if you link them in the answer. It's just a see also kind of thing – if you want to edit them in (your call), let me know and I'll delete my comment.
    $endgroup$
    – ymb1
    6 hours ago










  • $begingroup$
    It's allright. Leaving your comment just right there makes sense. My only concern about not adding them in the answer is they may get missed by someone who doesn't have the time to read the comments aswell. So, I'll add them anyway. :) Thanks again.
    $endgroup$
    – Karl Stephen
    1 hour ago








1




1




$begingroup$
Related: How does the EPR reading behave in reverse, and in reheat modes? and What is the difference between EPR and rotor speed as thrust setting parameter?
$endgroup$
– ymb1
7 hours ago






$begingroup$
Related: How does the EPR reading behave in reverse, and in reheat modes? and What is the difference between EPR and rotor speed as thrust setting parameter?
$endgroup$
– ymb1
7 hours ago














$begingroup$
Thanks ymb1. Should I add those links by editing my answer ? It appears, they are already listed as related on the right panel.
$endgroup$
– Karl Stephen
6 hours ago




$begingroup$
Thanks ymb1. Should I add those links by editing my answer ? It appears, they are already listed as related on the right panel.
$endgroup$
– Karl Stephen
6 hours ago












$begingroup$
They appear under 'Linked' because I've linked them in a comment ;) the same will happen if you link them in the answer. It's just a see also kind of thing – if you want to edit them in (your call), let me know and I'll delete my comment.
$endgroup$
– ymb1
6 hours ago




$begingroup$
They appear under 'Linked' because I've linked them in a comment ;) the same will happen if you link them in the answer. It's just a see also kind of thing – if you want to edit them in (your call), let me know and I'll delete my comment.
$endgroup$
– ymb1
6 hours ago












$begingroup$
It's allright. Leaving your comment just right there makes sense. My only concern about not adding them in the answer is they may get missed by someone who doesn't have the time to read the comments aswell. So, I'll add them anyway. :) Thanks again.
$endgroup$
– Karl Stephen
1 hour ago




$begingroup$
It's allright. Leaving your comment just right there makes sense. My only concern about not adding them in the answer is they may get missed by someone who doesn't have the time to read the comments aswell. So, I'll add them anyway. :) Thanks again.
$endgroup$
– Karl Stephen
1 hour ago










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