4-1a. Fuel System Fundamentals
Fuel System purpose - correct answer ✔✔Store, distribute, and control fuel to meet engine demand
-Must work in normal and emergency situations
-Perform operations
Fuel System Perform operations for - correct answer ✔✔Refuel, Defuel, and Fuel transfer between tanks
Components - correct answer ✔✔Fuel management panel, Fuel tanks or cells, Fuel pumps, Fuel Valves,
Fuel Manifolds, Fuel filters, Heat Exchangers
Fuel management panel - correct answer ✔✔-Centralized means of controlling fuel movement
-Located in Pilot's compartment
-Contains necessary switches and indicators
-Tank Filler Caps
Contains necessary switches and indicators to: - correct answer ✔✔1)Control and monitor individual
engine fuel feed
2)Control tank-to-tank fuel transfer within the aircraft
3)Indicate quantity of fuel stored in fuel tanks
4)Alert the pilot of fuel system malfunctions with warning lights
5)Control / monitor air or ground refuel operations
6)Rapidly dump (release) fuel in emergency situations
Fuel Tanks or Cells - correct answer ✔✔-Provide fuel storage
-Vary in design, size, and shape based on aircraft
Fuel Tanks or Cells Types - correct answer ✔✔Integral, Bladder, External,
, Integral - correct answer ✔✔-Built as part of the wing or fuselage (main body) structure
-Tanks formed by sealing off structural areas with fuel resistant sealants
Bladder - correct answer ✔✔-Installed in compartments called cavities
-Can be made of rubber or nylon
External - correct answer ✔✔-Attached to the aircraft exterior to extend aircraft range
-May be jettisoned (dropped) from certain aircraft during combat or emergency situations
Tank Filler Caps (provide access for) - correct answer ✔✔-Gravity (over--the-wing) refueling of individual
tanks
-Visual or dip stick checks of fuel quantity in tank
-Secured in place with locking mechanism
Fuel pumps - correct answer ✔✔-Provide necessary pressure to move fuel through the system plumbing
-Pumps mounted in fuel tanks
-Can transfer fuel from tank to tank
Types of Pumps - correct answer ✔✔Boost pumps, Transfer pumps, Ejector pumps, and Booster pump
Boost pumps - correct answer ✔✔Ensure positive fuel supply to engine driven pumps
Transfer pumps - correct answer ✔✔Transfer fuel tank-to-tank
Ejector pumps - correct answer ✔✔Operates by fuel being forced through a narrow area resulting in
pressure reduction and velocity increase ( known as the Venturi principle ) to move fuel from tanks
Booster pump and/ or Transfer pump can be - correct answer ✔✔Used to defuel a tank
Fuel System purpose - correct answer ✔✔Store, distribute, and control fuel to meet engine demand
-Must work in normal and emergency situations
-Perform operations
Fuel System Perform operations for - correct answer ✔✔Refuel, Defuel, and Fuel transfer between tanks
Components - correct answer ✔✔Fuel management panel, Fuel tanks or cells, Fuel pumps, Fuel Valves,
Fuel Manifolds, Fuel filters, Heat Exchangers
Fuel management panel - correct answer ✔✔-Centralized means of controlling fuel movement
-Located in Pilot's compartment
-Contains necessary switches and indicators
-Tank Filler Caps
Contains necessary switches and indicators to: - correct answer ✔✔1)Control and monitor individual
engine fuel feed
2)Control tank-to-tank fuel transfer within the aircraft
3)Indicate quantity of fuel stored in fuel tanks
4)Alert the pilot of fuel system malfunctions with warning lights
5)Control / monitor air or ground refuel operations
6)Rapidly dump (release) fuel in emergency situations
Fuel Tanks or Cells - correct answer ✔✔-Provide fuel storage
-Vary in design, size, and shape based on aircraft
Fuel Tanks or Cells Types - correct answer ✔✔Integral, Bladder, External,
, Integral - correct answer ✔✔-Built as part of the wing or fuselage (main body) structure
-Tanks formed by sealing off structural areas with fuel resistant sealants
Bladder - correct answer ✔✔-Installed in compartments called cavities
-Can be made of rubber or nylon
External - correct answer ✔✔-Attached to the aircraft exterior to extend aircraft range
-May be jettisoned (dropped) from certain aircraft during combat or emergency situations
Tank Filler Caps (provide access for) - correct answer ✔✔-Gravity (over--the-wing) refueling of individual
tanks
-Visual or dip stick checks of fuel quantity in tank
-Secured in place with locking mechanism
Fuel pumps - correct answer ✔✔-Provide necessary pressure to move fuel through the system plumbing
-Pumps mounted in fuel tanks
-Can transfer fuel from tank to tank
Types of Pumps - correct answer ✔✔Boost pumps, Transfer pumps, Ejector pumps, and Booster pump
Boost pumps - correct answer ✔✔Ensure positive fuel supply to engine driven pumps
Transfer pumps - correct answer ✔✔Transfer fuel tank-to-tank
Ejector pumps - correct answer ✔✔Operates by fuel being forced through a narrow area resulting in
pressure reduction and velocity increase ( known as the Venturi principle ) to move fuel from tanks
Booster pump and/ or Transfer pump can be - correct answer ✔✔Used to defuel a tank
