A320 L+R Wing Tk Lo Lvl
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I'm well aware of this document and as I stated above AIRBUS officially only states that there are no restrictions operating with low fuel levels. Unfortunately this only applies for manoeuvres within certification requirements and demonstrating a go-around with 30 minutes FOB is neither required nor is the fuel for it figured in the fuel-calculation as you can see on the first pages of the AIRBUS-document.
If you seriously buy the AIRBUS statement please tell my at which fuel level (if not 750 kg per tank) you would accept the possibility of a flame out with 17.5° of pitch and 25° Bank from a technical point of view. 500 kg? 200 kg? 100 kg?
And all the Boeing aircraft with notes in the book to the extend that 'pitch should be limited as much as possible' in low fuel situations seem to be pretty ill-engineered in comparision to our french plastic jet.
BRGDS, Max
If you seriously buy the AIRBUS statement please tell my at which fuel level (if not 750 kg per tank) you would accept the possibility of a flame out with 17.5° of pitch and 25° Bank from a technical point of view. 500 kg? 200 kg? 100 kg?
And all the Boeing aircraft with notes in the book to the extend that 'pitch should be limited as much as possible' in low fuel situations seem to be pretty ill-engineered in comparision to our french plastic jet.
BRGDS, Max
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Hi Max,
In FCOM 3.01.28 "Minimum Fuel Quantity for TakeOff : 1,500 Kgs provided Wing Tk Lo Lvl warning must not be displayed on ECAM for takeoff." (Presumably this restriction is to prevent the ECAM ding before T.O. Inhibit.)
So if it's certified for 1500 kgs on Take Off - what's the difference in pitch during a G.A.?
Surely a balanced turn with 30 degs bank will have no effect - because the fuel will only sense an increase in g and still lie in the same position in the tank?
As for the minimum fuel before one of the main tank fuel pumps uncover - I don't know. But I thought the other pump's inlet should remain covered until the fuel was exhausted - else it would be described as unuseable fuel.
In FCOM 3.01.28 "Minimum Fuel Quantity for TakeOff : 1,500 Kgs provided Wing Tk Lo Lvl warning must not be displayed on ECAM for takeoff." (Presumably this restriction is to prevent the ECAM ding before T.O. Inhibit.)
So if it's certified for 1500 kgs on Take Off - what's the difference in pitch during a G.A.?
Surely a balanced turn with 30 degs bank will have no effect - because the fuel will only sense an increase in g and still lie in the same position in the tank?
As for the minimum fuel before one of the main tank fuel pumps uncover - I don't know. But I thought the other pump's inlet should remain covered until the fuel was exhausted - else it would be described as unuseable fuel.
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Somebody at airbus said off the record that....
Those kind of things need to be taken with a grain of salt.
Physically, the collector cells lie between ribs 1 and 2, the upper and lower skins, with a one way valve for (inner) wing tank fuel to flow into the collector cell but not out. The cells have 2 pumps, fore and aft placed in opposite corners.
Once the fuel resides in a collector cell, the only way it exits that cell is through a pump to an engine. (It won't slosh/drain over to the other wing in a steep turn)
FIT would need to read 0 before the engine would flame out.
Having said all that, I understand that you can in fact flame out the engine but you would need to hold an fairly excessive angle in pitch and roll attitude or high g load for more than a few minutes, or be inverted.
Those kind of things need to be taken with a grain of salt.
Physically, the collector cells lie between ribs 1 and 2, the upper and lower skins, with a one way valve for (inner) wing tank fuel to flow into the collector cell but not out. The cells have 2 pumps, fore and aft placed in opposite corners.
Once the fuel resides in a collector cell, the only way it exits that cell is through a pump to an engine. (It won't slosh/drain over to the other wing in a steep turn)
FIT would need to read 0 before the engine would flame out.
Having said all that, I understand that you can in fact flame out the engine but you would need to hold an fairly excessive angle in pitch and roll attitude or high g load for more than a few minutes, or be inverted.
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Originally Posted by rudderrudderrat
In FCOM 3.01.28 "Minimum Fuel Quantity for TakeOff : 1,500 Kgs provided Wing Tk Lo Lvl warning must not be displayed on ECAM for takeoff." (Presumably this restriction is to prevent the ECAM ding before T.O. Inhibit.)
So if it's certified for 1500 kgs on Take Off - what's the difference in pitch during a G.A.?
So if it's certified for 1500 kgs on Take Off - what's the difference in pitch during a G.A.?
Cheers, MAX
