sherman2000
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Fuel Flow Meter

Mon Oct 29, 2018 1:29 am

Hi, what is the most common type of fuel flow meter used in commercial aircrafts?
 
Tristarsteve
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Re: Fuel Flow Meter

Mon Oct 29, 2018 11:59 am

Well usually just figures on an LCD screen on the engine display showing the fuel flow in kgs/hr (or lbs/hr in the USA)
There is no separate meter.
 
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Starlionblue
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Re: Fuel Flow Meter

Mon Oct 29, 2018 12:13 pm

Tristarsteve wrote:
Well usually just figures on an LCD screen on the engine display showing the fuel flow in kgs/hr (or lbs/hr in the USA)
There is no separate meter.


I think he means the hardware itself. As in the gadget that measures fuel flow.
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fr8mech
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Re: Fuel Flow Meter

Mon Oct 29, 2018 2:12 pm

Well, on a CF6, as installed on the B767, the transmitter uses the angular momentum of a rotor to measure mass flow rate. In other words, the flowing fuel spins a rotor. The rotor RPM is counted, the software in the EICAS computer converts the RPM to a flow rate and reports it to the crew, via EICAS.

I suspect most modern aircraft are similar.
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DL_Mech
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Re: Fuel Flow Meter

Mon Oct 29, 2018 9:01 pm

The Ametek 8TJ167 is a popular fuel flow transmitter used on commercial airliners.

http://www.ameteksfms.com/products/fuel-flow-transmitters
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sherman2000
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Re: Fuel Flow Meter

Sun Nov 04, 2018 10:27 am

thanks for all the replies!
 
Apprentice
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Re: Fuel Flow Meter

Sat Nov 10, 2018 10:41 pm

fr8mech wrote:
Well, on a CF6, as installed on the B767, the transmitter uses the angular momentum of a rotor to measure mass flow rate. In other words, the flowing fuel spins a rotor. The rotor RPM is counted, the software in the EICAS computer converts the RPM to a flow rate and reports it to the crew, via EICAS.

I suspect most modern aircraft are similar.


Just to add that flowméter are pared with densitometer, as fuel is measured in weights units (KG/ LBs) and rotor measure volume (Ltd/ Galons)..
Some have a density meter for all Rotors, others, one dens to one rotor.

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