Day 12 Progress Check part1 Flashcards
What is a major benefit of incorporating fire detection control units in aircraft systems?
They integrate multiple hazard area systems and allow for centralized monitoring.
Why is the classification of fire zones in powerplant compartments critical for aircraft safety?
It determines the type of fire detection system best suited for the compartment’s airflow and layout.
How does a continuous-loop system improve fire detection compared to thermal switch systems?
It provides broader coverage and is less likely to give false alarms.
Why is it important for fire protection systems to allow for electrical testing from the flight deck?
To continuously verify that the system is operational without physically inspecting it.
Why is it critical to have short detection features in transport category aircraft fire systems?
Short circuits can create false alarms or prevent detection systems from functioning correctly.
Why is it important to classify fire zones in modern aircraft?
To properly design the fire detection and extinguishing systems based on the nature of the zone.
Why might smoke detectors be installed in cargo compartments instead of heat-based detection systems?
Smoke detectors can detect a fire earlier, especially when materials smolder.
How does the use of helium in pneumatic continuous-loop systems enhance fire detection accuracy?
Helium increases pressure proportionally to temperature, allowing for early fire detection.
What is the primary reason for using a dual-loop system in transport category aircraft?
To provide redundancy and ensure no false fire warnings are triggered.
In what way do modern fire detection systems contribute to reducing environmental damage caused by false fire signals?
Through the use of accurate sensors that minimize unnecessary fire suppressant discharges.
In what scenario would carbon monoxide detectors be particularly important in an aircraft’s fire protection system?
In aircraft equipped with combustion heaters where incomplete combustion can occur.
What is a critical advantage of using optical flame detectors (IR or UV) in aircraft fire protection systems?
They detect fires without being affected by ambient light or temperature changes.
How do smoke detection systems with ionization technology differ from those using light refraction technology?
Ionization systems detect changes in air composition, while light refraction systems rely on visible smoke particles.
Which fire detection method is most effective in detecting a fire in an engine that heats up slowly over time?
Continuous-loop system
What is the primary risk of false fire alarms in engine fire detection systems, and how is this mitigated?
The risk is discharging expensive fire suppression agents; dual-loop systems reduce false alarms.
