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prelims 2nd sem > aircraft system > Flashcards

aircraft system Flashcards

1
Q

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

A

aircraft fuel system components

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2
Q

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

A

gravity-feed system

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3
Q

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

A

gravity-feed system

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4
Q

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

A

fuel-pump system

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5
Q

aircraft with fuel-pump system have two fuel pumps

A

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

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6
Q

pumps the fuel from the tank to the engine

A

main pump system or engine driven pump

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7
Q

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

A

electrically driven auxiliary pump

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8
Q

other term for auxiliary pump

A

boost pump

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9
Q

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

A

auxiliary pump

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10
Q

allows air into the tank as fuel is consumed

A

fuel vent

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11
Q

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

A

fuel primer

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12
Q

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

A

fuel primer

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13
Q

allow air into the tank as fuel is consumed

A

fuel vents

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14
Q

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

A

fuel tanks

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15
Q

covers the opening of fuel tanks

A

filler cap

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16
Q

stores the fuel and protects from contaminants

A

fuel tanks

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17
Q

all fuel tanks are required to have what

A

sump and drain installed at their lowest point

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18
Q

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

A

sump

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19
Q

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

A

fuel gauges / fuel quantity gauges

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20
Q

when do aircraft certification rules require accuracy in fuel gauges

A

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

21
Q

allows selection of fuel from various tanks

A

fuel selectors / selector valve

22
Q

four positions of a common type of selector

A

left, right, both, and off

23
Q

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

A

fuel line

24
Q

fuel lines routed in an engine compartment present what

A

special maintenance consideration

25
Q

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

A

flexi fuel lines

26
Q

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

A

strainer

27
Q

usually used to remove large solid contaminant particles

A

strainer

28
Q

used for fine filtration

A

filter

29
Q

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

A

FAR Part 23

30
Q

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

A

fuel strainer

31
Q

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

A

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

32
Q

low point in a fuel system and/or fuel tank

A

sump

33
Q

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

A

fuel system

34
Q

why is water in the sump hazardous

A

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

35
Q

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

A

drain valve

36
Q

important of an aircraft drain valve

A

high quality seal

37
Q

primary fuel pressure pumps in a pressure-feed fuel system

A

engine-driven fuel pumps

38
Q

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

A

engine-driven fuel pumps

39
Q

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

A

auxiliary fuel pumps / boost pump

40
Q

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

A

auxiliary fuel pumps / boost pump

41
Q

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

A

bypass valves or check valves

42
Q

when pumps are in series this is used

A

bypass valves

43
Q

when pumps are in par-all

A

check valves

44
Q

purpose of of bypass and check valves

A

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

45
Q

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

A

turbine fuel system

46
Q

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

A

turbine fuel system

47
Q

what does a fuel system contain

A

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

48
Q

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

A

prelims 2nd sem (5 decks)

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