Engine Fire Protection Systems Flashcards

1
Q

Where are the fire switch normally installed

A

Center overhead panel, or center console in the flight deck

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2
Q

What are the main categories of engine fire protection system?

A

spot detection, continuous loop and flame detectors

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3
Q

Name examples of spot detection type system

A

thermal switch and thermalcouple

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4
Q

Name examples of continuous loop detection systems

A

Fenwall, kiddle, and pneumatic 

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5
Q

When using a thermocouple type fire detection system, what happens if the engine overheats slowly

A

Thermocouple depends on the rate of temperature rise, and it will not give warning if engine slowly overheat or as short circuits develop

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6
Q

How many thermocouples are required for engine fire detection

A

Depending on the size of the fire zone and total circuit resistant

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7
Q

Where does the thermocouple fire detector system get its electrical power to operate?

A

thermocouple produces power to close a relay, and the power from the aircraft electrical system flow through the rely relay to a warning light

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8
Q

Describe a thermal switch fire detector system

A

Have one or more lights that are energized by aircraft electrical system when a heat sensitive thermal switch closes to circuit at a specific temperature

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9
Q

How are thermal switch electrically connected to the circuit

A

Connected in parallel to each other but in series with the warning light. Temperature rise in any one of those section will cause a thermal switch to close which completes the circuit to indicate a fire all over heat condition

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10
Q

What is the most common cause of a false fire morning in a continuous loop detector system?

A

a dent,kinks or crush in the sensing element

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11
Q

Will the continuous loop fire detector still indicate the presence of a fire if the element is broken in two

A

Yes

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12
Q

What are the two methods used to discharge fire extinguishing agent

A

Electrical and mechanical

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13
Q

What method is used to release the fire extinguishing agent in a typical turbine engine fire protection system

A

Discharge valve that are operated by electronic discharge cartridge . Discharge plug is seated with a breakable desk that is rupture by the squib.

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14
Q

What method is used to determine the proper fire extinguisher container pressure

A

Check the container gauge to determine if the pressure is between the prescribed minimum and the maximum limit 

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15
Q

What is the color marking used to identify the fire extinguisher lines?

A

Brown tag what a row of black diamonds

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16
Q

What is the method other than the prescribed gauge is used to indicate low agent pressure in the container

A

Low pressure warning light in the cockpit

17
Q

What is the purpose of a yellow and red discharge plug in a turbine engine fire extinguisher stone

A

Yellow plug indicate normal discharge , red plug indicates a thermal discharge

18
Q

What what are the two methods commonly used to distribute the fire extinguisher agent to the engine?

A

Perforated tube and discharge nozzles

19
Q

How does the fire extinguishing agent put out the fire?

A

It dilutes the atmosphere, so it will not support combustion

20
Q

What does HRD stands for?

A

high rate discharge

21
Q

How how is the fire extinguishing agent distributor from HRD system?

A

Deliver from the open and tubes

22
Q

How long does it take to discharge the fire extinguishing agent in the HRD system?

A

1 to 2 seconds

23
Q

Which type of fire detection system case a more complete coverage to a fire hazard

A

Continuous loop