How many igniters are installed on each engine?

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Multiple Choice

How many igniters are installed on each engine?

Explanation:
Ignition system redundancy is key for turbine engines. Having two igniters per engine provides reliable ignition during start and relight, even if one igniter or its circuit has a fault. The two igniters are often positioned to maximize spark coverage in the combustor, ensuring the fuel-air mixture lights reliably across operating conditions. A single igniter risks a missed start or relight if that unit fails, while three would add unnecessary weight and complexity. So, each engine is equipped with two igniters to balance reliability with efficiency.

Ignition system redundancy is key for turbine engines. Having two igniters per engine provides reliable ignition during start and relight, even if one igniter or its circuit has a fault. The two igniters are often positioned to maximize spark coverage in the combustor, ensuring the fuel-air mixture lights reliably across operating conditions. A single igniter risks a missed start or relight if that unit fails, while three would add unnecessary weight and complexity. So, each engine is equipped with two igniters to balance reliability with efficiency.

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