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Powerplant > Engine Fire Protection > Flashcards

Engine Fire Protection Flashcards

1
Q

What is the primary extinguishing agent for class B and C fires?

A

CO2

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2
Q

The core resistance material, which prevents current flow at normal temperatures, is the ________ continuous-loop fire detector system.

A

Kidde & Fenwal

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3
Q

Where do you discharge the fire-extinguishing agent?

A

Area between engine and cowling

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4
Q

The sensing element consists of a small (0.089 in OD) lightweight, Inconel tube with a pure nickel wire center conductor. With a length of 1.5 to 15 feet, is the ________ continuous fire detection system.

A

Fenwal

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5
Q

When you pull the fire handle it accomplishes which sequence of events?

A

closes fuel firewall Shutoff valve, Hydraulic firewall shutoff valve, pneumatic shutoff valve, Electrically disconnects generators, Arms discharge cartridges

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6
Q

All fire extinguishing systems for aircraft are required to incorporate indicators by which the system condition is shown. True or False?

A

True

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7
Q

Utilizing two separate agent containers for each area or by incorporating a cross feed system so that extinguishing agent can be drawn from either of two different containers for each engine is the _____ _____ feature.

A

Two shot

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8
Q

When a fire occurs, the temperature in the area of the active thermocouples will exceed the temperature of the reference thermocouple, causing a current to flow through sensitive relay. True or False?

A

True

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9
Q

When the Yellow indicator disk is missing it indicates what?

A

Normal discharge through firing of the squibs

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10
Q

Dry Powder is used for Class ______ Fires.

A

D

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11
Q

The system, when any portion of the sensor tube is exposed to fire, the gas absorption material immediately releases a large quantity of gas, which quickly increases the pressure in the tube to a level necessary to close the diaphragm switch is the _____________ system.

A

Systron-donner

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12
Q

A _______ disk and _______ disk retain the extinguishing agent in the (HRD) container.

A

Breakable & Fusible

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13
Q

The outer tube is constructed of stainless steel. Between the inner and outer tubes, an inert gas (helium) is contained under pressure. This is the __________ system.

A

Systron-donner

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14
Q

The Kidde system has two electric conductors. True or False

A

True

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15
Q

What electrically discharges the cartridge in the selected bottle allowing the extinguishing agent to escape into the plumbing?

A

The bottle discharge button

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16
Q

Single wire surrounded by a continuous string of ceramic beads within an inconel tube describes the ___________ system.

A

Fenwal

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17
Q

What is contained as a liquid, when released it becomes a gas, and smothers a fire by displacing the oxygen?

A

CO2

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18
Q

A feed-through electrical connector that passes though a firewall is a ________
connector.

A

Bulkhead

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19
Q

This type of fire detection system operates on the principle of a buildup of gas pressure within a tube proportional to temperature.

A

Systron-Donner

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20
Q

Each sensing loop is connected to its own electronic control circuit mounted on a separate circuit card to provide redundancy, thus ensuring operation of the system even if one side fails. This is the
_________ system

A

Kidde

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21
Q

Cracked compressor, a leaking bleed air duct, burn through in a combuster, or leaks in the exhaust can all be causes of engine nacelle overheat condition. True or False

A

True

22
Q

When normal temperatures are reached, the gas absorption material reabsorbs the gas and the pressure drops, opening the switch and cutting off the alarm. This describes what system?

A

Systron- Donner

23
Q

What is the purpose of isolating the reference thermocouple?

A

Isolates it from active thermocouples so reference isn’t affected by the engine heat

24
Q

The sensing element responds to a specified degree of elevated temperature at any point along its entire length. What system is this?

A

Fenwal

25
Q

What extinguishing agent is used in a carburetor fire?

A

CO2

26
Q

What agent extinguishes a fire by displacing the oxygen in the immediate area?

A

CO2

27
Q

Sensors routing is determined by the manufacturer where fires are most likely to occur. True or False?

A

True

28
Q

What is the ATA code for fire protection?

A

26

29
Q

What are the two types of fixed powerplant extinguishing systems?

A

Conventional and HRD (High Rate of Discharge)

30
Q

When removing the squibs what precaution should be taken?

A

Short out the pins to prevent accidental discharge

31
Q

Why do we wire the spot detectors in parallel?

A

So that an open may exist in the system without sounding a false alarm

32
Q

When alarm temp is reached anywhere along the length of the tube, the gas pressure will cause the metal diaphragm to snap over and close the electrical contacts. What system is this?

A

Systron-Donner

33
Q

What is the most common fire system on modern aircraft?

A

HRD/Halon

34
Q

Powerplant fire systems operate automatically to discharge extinguishing agent in the event of a fire. True or False?

A

False

35
Q

What system has the integrity switch and the diaphragm switch incorporated in the responder housing?

A

Systron-Donner

36
Q

What system has a bimetallic thermoswitch that closes when heated?

A

Spot detector

37
Q

The agent container incorporates a pressure switch that remains open when the container is pressurized. True or False?

A

True

38
Q

The system would again produce a full fire alarm when?

A

The fire is reignited

39
Q

What system utilizes a gas filled, sealed tube to provide a signal that actuates an alarm?

A

Systron-Donner

40
Q

What system uses the rate of temp rise in the engine compartment as a basis for its operating principle?

A

Thermocouple

41
Q

The Lindberg and the ________ fire detector systems use heat in its normal self test procedure.

A

Thermocouple

42
Q

The extinguisher is activated by opening the guard and pressing the fire light in a _________ airplane.

A

Light-twin

43
Q

In this system the resistance of the thermistor material decreases rapidly as the element is heated.

A

Kidde

44
Q

In the Kidde system, when the resistance decreases as a result of a fire the sensing elements _______ a _______ that produces an alarm in the cockpit.

A

Form a ground

45
Q

The explosive cartridge in the discharge valve of the fire bottle is not a life dated. True of false?

A

False

46
Q

After a fire has been extinguished, the resistance of the eutectic salt in the sensor will?

A

Increase

47
Q

What provides the force to rupture the disk seal in the fire bottle?

A

Squib

48
Q

In nacelles of large reciprocating engines, overheat conditions may be caused by?

A

cracks or burns through the system

49
Q

If a volume of gas is held constant, its pressure increases as temp increases. What systems are we talking about?

A

pneumatic systems

50
Q

Which classmate is the FUCKING BEST

A

Eric obvy

Powerplant (18 decks)

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