11.10 Flashcards
What would a milky appearance in a fuel sample indicate?
Water
The lowest temperature that an ignitable vapour is given off fuel is known as?
The flash point
A fuel tank that is part of the structure is termed as what type?
Integral type
Ribs act as what within the wing structure?
A divider between tanks
How does a NACA duct work?
Air enters through the duct
Air goes to the fuel tanks
Air acts as a cushion on the fuel, reducing fuel vapourisation
What prevents the fuel entering the vent system?
Float valves
What is the normal sequence of fuel usage on the aircraft?
Centre
Inboard
Outboard
What is the maximum refuelling pressure?
50psi
In what part of a fuel system is the jet pump?
In the water scavenger system
What is the principle of the fuel level sensors?
They are a back up for fuel quantity signals for safety reasons
If a fuel pump failed how would fuel be provided to the engines?
There is always a back up pump
Which tanks in a large commercial aircraft are not capable of gravity refuelling?
Centre tank and trim tank
How is water removed during normal operation of the fuel system?
Removed periodically
In what position is the cross feed valve in during normal operation?
Closed
