Pumps
This condition occurs when fuel vaporizes in the lines, forming bubbles that block fuel flow.
What is vapor lock?
Fuel tanks must be equipped with this component at the lowest point in the tank to collect water and sediment for draining.
What is a sump?
One advantage of electrical and electronic fuel quantity indicating systems is that the indicator can be located here.
What is any distance from the tank?
The primary purpose of a fuel jettison system is to achieve this before landing.
What is a lower landing weight?
This pump has no moving parts and uses the venturi principle to scavenge fuel.
What is an ejector pump?
These valves inside fuel tanks act as check valves and help maintain fuel near outlets during high-G maneuvers.
What are flapper valves?
This method is used on turbine-powered aircraft to determine when the condition of the fuel is approaching the danger of forming ice crystals.
What is fuel temperature indicator?
A fuel leak producing a stain with a diameter less than 3/4 inch is classified as this.
What is a stain?
FAR Part 23 requires pressure pump systems to supply at least this percentage of takeoff fuel consumption.
What is 125%?
This gas is used to safely purge fuel tanks.
What is carbon dioxide?
This is identified by a knocking or pinging sound and typically causes an increase in cylinder head temperature.
What is detonation?
Fuel becomes denser and heavier per gallon under this temperature condition.
What is colder temperature?
In most jettison systems, this component moves the fuel overboard.
What is a boost pump?
FAR Part 23 requires this label and information at fuel filler ports on reciprocating-engine aircraft.
What is "AVGAS" and the minimum fuel grade?
These are the four general types of fuel quantity indicators used in aircraft.
What are sight glass, mechanical, electrical, and electronic?
One problem associated with turbine fuels not typically found with avgas.
What is microbial growth?
This constant displacement pump is most commonly used on reciprocating engine aircraft.
What is a vane-type pump?
A fuel tank built into the wing structure and sealed to hold fuel is known as this.
What is an integral tank (or wet wing)?
This system warns pilots when fuel pressure drops, indicating a tank is nearly empty.
What is a fuel pressure warning system?
These two sources are used to heat fuel and prevent ice crystal formation in turbine aircraft.
What are compressor bleed air and engine oil?
This type of pump separates air and vapor from fuel before it reaches the carburetor.
What is a centrifugal pump?
The primary purpose of baffles inside fuel tanks.
What is to resist fuel surging?
In a capacitance-type fuel quantity system, the probe functions as this component.
What is a capacitor with fuel and air acting as the dielectric?
Avgas 100LL is identified by this color.
What is blue?
This condition occurs when fuel vaporizes, forms bubbles, and blocks fuel flow to the engine.
What is vapor lock?
This type of fuel tank is also known as a "wet wing."
What is an integral tank?
This type of gauge is a differential pressure indicator primarily used on larger aircraft.
What is a fuel pressure gauge?
Compared to avgas, jet fuel has this kind of flash point.
What is microbial growth?
This is the maximum allowable vapor pressure for aircraft fuel at 100°F.
What is 7 psi?
This type of fuel tank is stainless steel, held in with padded straps, and supported by the airframe.
What is a rigid removable tank?
An electronic-type fuel quantity system does not use a variable resistor, but this type does.
What is an electrical fuel quantity indicating system?
Fuel heaters are used to prevent these from clogging fuel filters in turbine engines.
What are ice crystals?
The purpose of this aircraft’s system is to deliver this kind of fuel flow under constant pressure.
What is the aircraft's fuel system is to deliver uniform flow, of uniform fuel, under a constant pressure to the carburetor or other fuel metering device?
Integral tanks are often used in large aircraft primarily for this reason.
What is to reduce weight?
The probe in a capacitance-type fuel quantity system functions as this electrical component.
What is a capacitor with the fuel and air acting as the dielectric?
Fuel systems must be designed to prevent vapor ignition caused by this environmental hazard.
What is lightning?
Contrary to common belief, high-wing reciprocating engine aircraft typically use this type of fuel system.
What is a gravity-feed fuel system?
The main purpose of installing baffles inside a fuel tank.
What is to resist fuel surging within the tank?
Installed in many large aircraft, this alerts the crew when fuel in a tank is nearly exhausted.
What is a fuel pressure warning system?
Compared to AVGAS, Jet Fuel has this kind of flash point.
What is a higher flash point?