aircraft system

Question 1

are designed to provide an uninterrupted flow of clean fuel to the engine

Answer 1

aircraft fuel system components

Question 2

utilizes the force of gravity to transfer the fuel from the tanks to the engine

Answer 2

gravity-feed system

Question 3

this places thee fuel tanks above the carburetor, and the fuel is gravity fed through the system and into the carburetor

Answer 3

gravity-feed system

Question 4

if the design of the aircraft is such that gravity cannot be used to transfer, this is installed

Answer 4

fuel-pump system

Question 5

aircraft with fuel-pump system have two fuel pumps

Answer 5

main pump system or engine driven pump and electrically driven auxiliary pump

Question 6

pumps the fuel from the tank to the engine

Answer 6

main pump system or engine driven pump

Question 7

provided for use in engine starting and in the event the engine pump fails

Answer 7

electrically driven auxiliary pump

Question 8

other term for auxiliary pump

Answer 8

boost pump

Question 9

provides reliability to the fuel system and is electrically driven by a switch in the cockpit

Answer 9

auxiliary pump

Question 10

allows air into the tank as fuel is consumed

Answer 10

fuel vent

Question 11

used to draw fuel from the tanks to vaporize fuel directly into the cylinders prior to starting the engine

Answer 11

fuel primer

Question 12

during cold weather, when engines are difficult to start, this helps because there is not enough heat available to vaporize the fuel in the carburetor

Answer 12

fuel primer

Question 13

allow air into the tank as fuel is consumed

Answer 13

fuel vents

Question 14

normally located inside the wings of an airplane, have a filler on top of the wing through which they can be filled

Answer 14

fuel tanks

Question 15

covers the opening of fuel tanks

Answer 15

filler cap

Question 16

stores the fuel and protects from contaminants

Answer 16

fuel tanks

Question 17

all fuel tanks are required to have what

Answer 17

sump and drain installed at their lowest point

Question 18

provides a convenient location for water and sediment to settle, allowing it to be drained from the system

Answer 18

sump

Question 19

indicate the amount of fuel measured by a sensing unit in each fuel tank and is displayed in gallons or pounds

Answer 19

fuel gauges / fuel quantity gauges

Question 20

when do aircraft certification rules require accuracy in fuel gauges

Answer 20

when they read “empty”(but other reading than “empty” should be verified

Question 21

allows selection of fuel from various tanks

Answer 21

fuel selectors / selector valve

Question 22

four positions of a common type of selector

Answer 22

left, right, both, and off

Question 23

fuel flows through a small metal what from the tank to the engine

Answer 23

fuel line

Question 24

fuel lines routed in an engine compartment present what

Answer 24

special maintenance consideration

Question 25

often constructed from synthetic materials with the line's diameter being dependent upon the engine's fuel flow requirements

Answer 25

flexi fuel lines

Question 26

also a kind of coarse filter used for separating solid particles of a different size.

Answer 26

strainer

Question 27

usually used to remove large solid contaminant particles

Answer 27

strainer

Question 28

used for fine filtration

Answer 28

filter

Question 29

requires a main strainer or fuel filter to be installed in the fuel system to remove contaminants and to provide a method for draining the contaminants from the system

Answer 29

FAR Part 23

Question 30

represents the lowest point in an aircraft's fuel system and should be checked periodically for contaminants that could restrict fuel flow to the engine

Answer 30

fuel strainer

Question 31

explain the process that happens in the fuel strainers, sumps, and drains

Answer 31

after leaving the fuel tank and before the carburetor, fuel passes through a strainer that removes moisture and sediments that settle in a sump at the bottom of the strainer assembly

Question 32

low point in a fuel system and/or fuel tank

Answer 32

sump

Question 33

may contain a sump, fuel strainer, and fuel tank drains, which may be collocated

Answer 33

fuel system

Question 34

why is water in the sump hazardous

Answer 34

in cold weather, the water can freeze and block fuel lines. in warm weather, it can flow into the carburetor and stop the engine

Question 35

serves to remove water from the tank or to drain the fuel

Answer 35

drain valve

Question 36

important of an aircraft drain valve

Answer 36

high quality seal

Question 37

primary fuel pressure pumps in a pressure-feed fuel system

Answer 37

engine-driven fuel pumps

Question 38

deliver a continuous supply of fuel at the proper pressure during engine operation

Answer 38

engine-driven fuel pumps

Question 39

maintain a positive fuel pressure on the inlet side of the engine-driven fuel pump. this helps prevent pump cavitation and vapor lock by pressurizing the fuel in the lines

Answer 39

auxiliary fuel pumps / boost pump

Question 40

may serve as a backup source for fuel pressure to the engine-driven fuel pump becomes clogged or fails

Answer 40

auxiliary fuel pumps / boost pump

Question 41

if an engine has both engine-driven fuel pump and a boost pump, this must be incorporated into the fuel system

Answer 41

bypass valves or check valves

Question 42

when pumps are in series this is used

Answer 42

bypass valves

Question 43

when pumps are in par-all

Answer 43

check valves

Question 44

purpose of of bypass and check valves

Answer 44

let fuel bypass the engine-driven pump during engine starting or in case the pump fails

Question 45

purpose of this is the same as a reciprocating engine fuel system

Answer 45

turbine fuel system

Question 46

must store, transfer, and meter fuel to a turbine engine in the proper amount and at the right pressure

Answer 46

turbine fuel system

Question 47

what does a fuel system contain

Answer 47

tanks, lines, valves, pumps, filter devices, gauges, a fuel control unit, and fuel nozzles ++ fuel heater

Question 48

required to eliminate fuel metering problems caused by ice crystals in the fuel