Fuel Flashcards
Describe the fuel tanks.
Each wing has a integral wing tank. Each tank has three sections.
- Surge Bay
- Main Tank
- Collector Bay
Which tank provides fuel to the APU?
The left collector bay.
Where is the tank temperature sensor?
The left collector bay.
What does the Primary Ejector pump provide?
Constant high volume and low pressure flow to the Fuel Metering Unit (FMU.)
How is fuel quantity measured?
Nine capacitance-type fuel probes in each wing.
The tanks can also be measured via a magnastick by mx.
What powers the Refuel Panel?
Hot Battery Bus
When does the TANK LOW FUEL light come on?
305lbs
What is the fuel temperature displayed on the ED?
It is the fuel inlet temperature which is taken after its goes through the fuel/oil heat exchanger.
When are the tanks full or empty when measured with a magnastick?
Full - 700 gallons
Empty - 100 gallons
How many pumps are in each wing?
1 FMU
1 Primary Ejector pump
1 Auxiliary Pump
4 Scavenge Ejector pumps
Describe the Surge Bay.
Surge bay which has two NACA ducts with stand pipes which provide main tank venting and positive pressure. Contains two float valves and one vent line to control pressure between the surge bay and main tank.
Describe the Main Tank.
Main Tank stores the majority of the fuel and has 4 scavenge ejector pumps and flapper valves to move fuel into the collector bay.
Describe the Collector Bay.
Collector bay provides steady supply of fuel to the engines regardless of aircraft attitude. It houses the primary ejector pump and auxiliary fuel pump. The left bay also provides fuel to the APU and has the tank temperature sensor.
