Questions tagged [fuel-systems]

Any question regarding aircraft fuel systems, how they work etc.

149 questions
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What is the purpose of the fuel shutoff valve?

Most GA planes have a fuel shutoff valve which I don't quite understand the purpose of. Does it cut the fuel flow with the mixture. My theory is to prevent fuel flow at earlier stage for safety reasons?
Mike no smith
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The fuel shut-off valve was left in over night. Is it dangerous for the plane?

I forgot to pull the shut-off valve in my plane (PZL-110 Koliber 150) while I was trying to start an engine. Will this have any effect on the plane? It has a mixture supply knob and is a pull/push type. I have pushed in and, according to the…
Kamil1598
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Why should the fuel shutoff valve in a Zlin Z-142 not be set to both for takeoff?

The fuel shutoff valve in the Zlin Z-142 has four different positions: Off, Left, Right and Both (L+R). In the POH, the procedures related to normal flight operations, suggest that during taxiing and takeoff the selector is on Right and to switch to…
Lennox
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What are the dimensions of an NPT pipe for fuel systems?

I have a question about NPT (National Pipe Thread) tapered connectors that are used in fuel systems of several airplanes. Please take a look at this standard-wall one-side threaded nipple (3/4 pipe size, 2" long). My questions are: 1) How do I…
space bobcat
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2
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Is gascolator and fuel strainer the same thing?

I am wondering is gascolator the same as fuel strainer, or this two things are bit different. Because sometimes I see one term, sometimes another, and I don't know if I am reading about the same thing.
Konrad
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What is the difference between fuel control unit and fuel flow meter (transmitter)?

Hello can someone explain the difference between the fcu and fuel flow transmitter and how they work together alongside the fuel pump?
Jono
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2
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Is there a use scenario for the Detote value?

Im currently working on the fuel calculation of an airplane, when i stumbled upon a value called "Detote". When asking around, no one knew what the use case of this value is or why it even exists. In the handbook it is described as follows: A DET…
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How do airblast fuel atomisers work?

How do airblast fuel atomisers work? Do they simply inject fuel with high velocity? Against the flow or perpendicular to it? How is the fuel jet shaped?
Francis L.
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Airbus a380 fuel system

Does the aibus a380 has center tank compare with a320,in this picture above,it shows that it has 11 tanks including the wings and the elevator while many aircraftshas together with the center tank (i mean that :eg the a320 ,the fuel are in the wings…