Module 15.20 Fire protection systems Flashcards
Where would fire detection take place?
Fire zone
What is in a fire zone?
Detection and/or extinguishing
What are the two major types of turbine failure?
- Thermodynamic
- Mechanical
Rapid build up go ice on inlet screens or IGV’s can result in what?
Severe overheating
Generally most thermodynamic failures are cause by what?
- Ice
- Excess air bleed or leakage
- Faulty controls that allow compressor stall or excess fuel
Mechanical failures, such as fractured or thrown blades, can puncture what?
The tail cone
What does a complete fire protection system include?
Fire detection and extinguishing
How are fires detected?
By using one more of the following detectors:
- Overheat
- Rate of rise
- Flame
What are the most common types of detectors?
Spot detectors and continuous loop
What detection systems are used on older aircraft?
- Thermal switch
- Thermocouple
How are thermal switches connected relative to each other?
In parallel
What are optical detectors sometimes referred to as?
Flame detectors
What do the thermocouple control?
Operation of the relay
What do the relays control?
The warning lights
What are the two types of optical sensors available?
- Infrared
- Ultraviolet