Re: Fuel line fitting
Posted: Wed Apr 03, 2024 6:15 pm
In this conversation there seems to be a failure to understand the difference between fuel pressure and flow (volume).
Carburettor engines operate, for the most part, on fuel flow ie little pressure
We often use fuel pressure as a handy gauge of fuel system delivery efficiency/health, however you can have good pressure and poor/minimal flow.
In an aircraft fuel system it is generally easier (cheaper/simpler) to measure pressure than flow, although fairy recent innovations have made this observation less applicable than the past.
I am an advocate for transparent wall filters, so that the pilot can have some hope of visually assessing filter blockage.
Note: a blocked filter may have minimal impact on fuel pressure but restrict flow to the point of reduced engine power or failure.
Carburettor engines operate, for the most part, on fuel flow ie little pressure
We often use fuel pressure as a handy gauge of fuel system delivery efficiency/health, however you can have good pressure and poor/minimal flow.
In an aircraft fuel system it is generally easier (cheaper/simpler) to measure pressure than flow, although fairy recent innovations have made this observation less applicable than the past.
I am an advocate for transparent wall filters, so that the pilot can have some hope of visually assessing filter blockage.
Note: a blocked filter may have minimal impact on fuel pressure but restrict flow to the point of reduced engine power or failure.