Functioning
Prevention
Carburetors
Pumps, Gauges, and Beyond
Definitions
100
How many vents, arranged so that they are not likely to become plugged at the same time, must be used in multiengine fuel systems?
What is two.
100
Fuel baffles are installed in tanks to prevent what caused by changes in the attitude of the aircraft?
What is surging.
100
This type of carburetor discharges fuel into the airstream at a pressure well above atmospheric. This results in better vaporization and permits the discharge of fuel into the airstream on the engine side of the throttle valve?
What is pressure-type
100
What type of fuel-booster pump requires a pressure relief valve?
What is sliding vane.
100
The function of this is to protect the engine fuel system from ice formation?
What is a fuel heater.
200
Why are integral fuel tanks used in many large aircraft?
What is to reduce weight.
200
A fuel system must be designed to prevent fuel-vapor ignition caused by what?
What is lightning.
200
This is an example of what kind of carburetor?
What is float-type
200
The type of fuel-boost pump that separates air and vapor from the fuel before it enters the line to the carburetor is the what?
What is centrifugal-type pump.
200
This provides a place for contaminants and water to settle, with a drain valve to remove the impurities?
What is fuel tank sump.
300
Flapper valves are used in fuel tanks to what?
What is act as check valves.
300
Fuel heaters are used with fuel systems for turbine engines to prevent what in the fuel from clogging system filters?
What are ice crystals.
300
These carburetors are distinctly different from float-type carburetors as they do not incorporate a vented float chamber or suction pickup from a discharge nozzle located in the venturi tube. Instead, they provide a pressurized fuel system that is closed from the engine fuel pump to the discharge nozzle.
What are pressure injection carburetors.
300
There are 4 general types of fuel quantity gages.
1. Mechanical
2. Electrical
3. Electronic
What is the 4th?
What is sight glass.
300
This creates primary and secondary fuel supplies that are discharged through separate manifolds, providing two separate fuel flows?
What is a flow divider.
400
A fuel totalizer is a component which indicates the what?
What is amount of fuel in all tanks.
400
Many fuel tanks incorporate these kind of valves to prevent fuel from flowing away from the boost pump or tank outlet when the aircraft is in a high 'G' maneuver?
What are flapper valves.
400
There are 3 general classifications of carburetor icing.
1. Fuel evaporation ice.
2. Throttle ice.
What is the 3rd?
What is impact ice.
400
Which gas is used for purging an aircraft fuel tank?
What is carbon dioxide.
400
This contains the the throttle valves, main venturi, boost venturi, and the impact tubes?
What is the throttle body.
500
The primary purpose of an aircraft's fuel jettison system is to quickly achieve what?
What is a lower landing weight.
500
How may the antiknock characteristics of a fuel be improved?
What is by adding a knock inhibitor
500
The carburetor must measure the airflow through the induction system and use this measurement to regulate the amount of fuel discharged into the airstream. The air measuring unit is the what?
What is the venturi.
500
What is the minimum distance allowed between a fuel tank and the fire wall separating the engine?
What is one-half inch.
500
This converts fluid pressure directly through a transmitter to the indicator?
What is a transducer.