Podcast
Questions and Answers
What position is a fuel crossfeed valve usually in during flight?
What position is a fuel crossfeed valve usually in during flight?
- The closed position (correct)
- Its last position
- A position based on pressure
- The open position
Where are sliding couplings in fuel systems typically used?
Where are sliding couplings in fuel systems typically used?
- Air or vapor systems (correct)
- Mechanical systems
- Low pressure systems
- High pressure systems
How is a fuel cross-feed valve lubricated?
How is a fuel cross-feed valve lubricated?
- By an external lubricant
- By air
- By the fuel (correct)
- By internal cooling
Which power source is used to operate fuel cross feed valves?
Which power source is used to operate fuel cross feed valves?
What is a requirement for interconnected fuel systems?
What is a requirement for interconnected fuel systems?
How does system capacitance change as fuel level increases?
How does system capacitance change as fuel level increases?
What happens when refueling an aircraft?
What happens when refueling an aircraft?
Why is it important not to fill the expansion space in the fuel tank?
Why is it important not to fill the expansion space in the fuel tank?
What is the purpose of Biopor microbial fuel growth treatment?
What is the purpose of Biopor microbial fuel growth treatment?
What is the typical appearance of microbial growth in fuel?
What is the typical appearance of microbial growth in fuel?
How are bladder-type fuel tanks secured?
How are bladder-type fuel tanks secured?
During a zero fuel test on a fuel quantity indicating system, the tanks should be:
During a zero fuel test on a fuel quantity indicating system, the tanks should be:
After replacing a fuel tank bladder, where should a fuel flow test be carried out?
After replacing a fuel tank bladder, where should a fuel flow test be carried out?
In a biologically contaminated fuel tank, corrosion is most likely to occur:
In a biologically contaminated fuel tank, corrosion is most likely to occur:
If an aircraft has the ability to transfer fuel in-flight, what provision must be made?
If an aircraft has the ability to transfer fuel in-flight, what provision must be made?
In a fuel system with interconnected vents, what is the required expansion space?
In a fuel system with interconnected vents, what is the required expansion space?
When a FADEC (Full Authority Digital Engine Control) system loses air data input, it goes into:
When a FADEC (Full Authority Digital Engine Control) system loses air data input, it goes into:
What should be done before fitting Calcium Chromate tablets in integral tanks?
What should be done before fitting Calcium Chromate tablets in integral tanks?
Why is a check valve fitted to a fuel jettison system?
Why is a check valve fitted to a fuel jettison system?
Which of the following is an advantage of integral fuel tanks?
Which of the following is an advantage of integral fuel tanks?
How is fuel delivered to each engine on large transport aircraft?
How is fuel delivered to each engine on large transport aircraft?
In the context of the text, what does 'seep' refer to?
In the context of the text, what does 'seep' refer to?
Based on the text, what is the purpose of using calcium chromate tablets?
Based on the text, what is the purpose of using calcium chromate tablets?
What is the role of a wetted linen bag during the installation process?
What is the role of a wetted linen bag during the installation process?
'Dumping of outer tanks' refers to:
'Dumping of outer tanks' refers to:
'Parallel system' in aviation typically means:
'Parallel system' in aviation typically means:
Which of the following is the correct reason for having some fuel left in the fuel tanks?
Which of the following is the correct reason for having some fuel left in the fuel tanks?
How are integral fuel booster pumps cooled?
How are integral fuel booster pumps cooled?
What is the purpose of a scavenge system within a fuel system?
What is the purpose of a scavenge system within a fuel system?
In a light fixed-wing aircraft, the fuel warning light indicates:
In a light fixed-wing aircraft, the fuel warning light indicates:
How is fuel supplied to a turbine engine?
How is fuel supplied to a turbine engine?
A fuel tank suction valve will open when:
A fuel tank suction valve will open when:
To prevent water condensation in a fuel tank, the tank should:
To prevent water condensation in a fuel tank, the tank should:
To protect the center tank fuselage area from vapor buildup, what is typically used?
To protect the center tank fuselage area from vapor buildup, what is typically used?
When a fuel jettison valve is in transit, the magnetic indicator would show:
When a fuel jettison valve is in transit, the magnetic indicator would show:
Which type of fuel tank construction is most prone to leaks?
Which type of fuel tank construction is most prone to leaks?
What is the typical position of a fuel crossfeed valve during flight?
What is the typical position of a fuel crossfeed valve during flight?
Where are sliding couplings commonly used in fuel systems?
Where are sliding couplings commonly used in fuel systems?
How is a fuel cross-feed valve typically lubricated?
How is a fuel cross-feed valve typically lubricated?
What power source is commonly used to operate fuel cross-feed valves?
What power source is commonly used to operate fuel cross-feed valves?
In interconnected fuel systems, how should the air spaces be configured?
In interconnected fuel systems, how should the air spaces be configured?
How does system capacitance change as fuel level increases?
How does system capacitance change as fuel level increases?
What is the purpose of using calcium chromate tablets in integral fuel tanks?
What is the purpose of using calcium chromate tablets in integral fuel tanks?
Why is a check valve fitted to a fuel jettison system?
Why is a check valve fitted to a fuel jettison system?
What is an advantage of integral fuel tanks?
What is an advantage of integral fuel tanks?
How is fuel delivered to each engine on large transport aircraft?
How is fuel delivered to each engine on large transport aircraft?
What should be done before fitting calcium chromate tablets in integral tanks?
What should be done before fitting calcium chromate tablets in integral tanks?
What does 'seep' refer to in the context of the text?
What does 'seep' refer to in the context of the text?
What is the purpose of a shroud vent and overboard drain on fuel tank vent pipes?
What is the purpose of a shroud vent and overboard drain on fuel tank vent pipes?
When a fuel jettison valve is in transit, the magnetic indicator would show which color and position?
When a fuel jettison valve is in transit, the magnetic indicator would show which color and position?
Which type of fuel tank construction is most prone to leaks?
Which type of fuel tank construction is most prone to leaks?
What is the typical power source used to operate fuel cross feed valves?
What is the typical power source used to operate fuel cross feed valves?
Why is it important to have some fuel left in the fuel tanks?
Why is it important to have some fuel left in the fuel tanks?
How are integral fuel booster pumps cooled?
How are integral fuel booster pumps cooled?
What is the purpose of the fuel tank suction valve?
What is the purpose of the fuel tank suction valve?
How is fuel supplied to a turbine engine?
How is fuel supplied to a turbine engine?
What is the purpose of a fuel scavenge system?
What is the purpose of a fuel scavenge system?
To prevent water condensation in a fuel tank, what should be done?
To prevent water condensation in a fuel tank, what should be done?
What is the correct way to treat biologically contaminated fuel according to the text?
What is the correct way to treat biologically contaminated fuel according to the text?
In a fuel system with interconnected vents, why is an expansion space required?
In a fuel system with interconnected vents, why is an expansion space required?
What is the typical appearance of microbial growth in fuel according to the text?
What is the typical appearance of microbial growth in fuel according to the text?
What should be done during a zero fuel test on a quantity indicating system according to the text?
What should be done during a zero fuel test on a quantity indicating system according to the text?
How should bladder-type fuel tanks be secured based on the text?
How should bladder-type fuel tanks be secured based on the text?
What is the purpose of an anti-corona device fitted to the fuel jettison pipe?
What is the purpose of an anti-corona device fitted to the fuel jettison pipe?
Why are cross feed valves installed in aircraft fuel systems?
Why are cross feed valves installed in aircraft fuel systems?
During pressure refueling, at what PSI is it typically carried out based on the text?
During pressure refueling, at what PSI is it typically carried out based on the text?
Study Notes
Fuel Systems
- It is important not to fill the expansion space in the tank.
Biopor Microbial Fuel Growth Treatment
- Biopor is added to the fuel and burnt.
Microbial Growth
- Microbial growth is characterized by brown-black slime.
Bladder Type Fuel Tanks
- Bladder type fuel tanks are secured by press type rivets.
Zero Fuel Test
- A zero fuel test on a fuel quantity indicating system is carried out with tanks empty apart from unusable fuel.
Fuel Flow Test
- A fuel flow test should be carried out at the engine inlet.
Corrosion in Fuel Tanks
- Corrosion takes place below the fungal colonies in biologically contaminated fuel.
Fuel Transfer in Flight
- Provision must be made to shut off fuel before structural damage when an aircraft has the ability to transfer fuel in flight.
Interconnected Vents
- The expansion space must be 2% of the tank capacity in a fuel system with interconnected vents.
Fuel Tanks Interconnectedness
- Protection against overfill for tanks and fuel systems is required for fuel tanks interconnectedness.
FADEC System
- When a FADEC system loses air data input, it goes to soft reversion.
Pressure Refuelling
- Pressure refuelling is carried out at 40 PSI.
Cross Feed Valves
- Cross feed valves permit fuel transfer from any tank to any engine.
Fuel Jettison Pipe
- An anti-corona device is fitted to the fuel jettison pipe to prevent vaporisation.
Fuel Contents Gauge
- The capacitance in a fuel contents gauge decreases as fuel is used.
Fuel Tank Storage
- When an aircraft is put into storage for medium/long periods, the fuel tanks should be run to prevent sealant from deteriorating/drying out.
Calcium Chromate Tablets
- Calcium Chromate tablets can be fitted in integral tanks; before installation, the linen bag should be wetted with water.
Check Valve
- A check valve is fitted to a fuel jettison system to prevent the dumping of the outer tanks.
Integral Fuel Tanks
- Integral fuel tanks use the maximum volume for fuel and have the minimum amount of weight.
Large Transport Aircraft Fuel Delivery
- Fuel is delivered to each engine using the same system for each engine.
And many more...### Fuel Systems
- It is important not to fill the expansion space in the tank.
- Biopor microbial fuel growth treatment is added to the fuel and burnt.
- Microbial growth appears as brown black slime.
Fuel Tanks
- Bladder type fuel tanks are secured by press type rivets.
- In a fuel system with interconnected vents, the expansion space must be 2% of the tank capacity.
- Fuel tanks interconnected must have protection against overfill for tanks and fuel system.
Fuel Testing
- A zero fuel test on a fuel quantity indicating system is carried out with tanks empty apart from unusable fuel.
- After a tank bag has been replaced, a fuel flow test should be carried out at the engine inlet.
Corrosion and Contamination
- In biologically contaminated fuel, corrosion takes place below the fungal colonies.
Fuel Transfer and Shut Off
- If an aircraft has ability to transfer fuel in flight, provision must be made to shut off fuel before structural damage.
- Cross feed valves permit fuel transfer from any tank to any engine.
Fuel Pressure and Refueling
- Pressure refuelling is carried out at up to 50 psi.
- Fuel jettison pipes are fitted with an anti-corona device to prevent vaporisation.
Fuel Gauges
- As fuel is used, the capacitance in a fuel contents gauge decreases.
Aircraft Storage
- When an aircraft is put into storage for medium/long periods, the fuel tanks should be treated accordingly.
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Description
Test your knowledge on aircraft fuel system components like fuel crossfeed valves and sliding couplings. Determine the correct positions and applications of these crucial components in aviation fuel systems.
