Which component extends into the combustion chamber and provides the spark that ignites the chamber?

Which component extends into the combustion chamber and provides the spark that ignites the chamber?

• A. Igniter Plugs
• B. Executor Assemblies
• C. High Tension Leads
• D. FADEC

Answer: (A)

Ignition inside the combustion chamber is produced by a component that extends into the chamber and creates a spark. The igniter plug sits with its tip inside the flame zone, and when a high-voltage pulse is applied, a spark jumps across the gap at the plug tip, igniting the fuel-air mixture. This direct, in-chamber spark is what starts combustion and is often relied on during start-up and certain operating conditions for reliable ignition. The energy that reaches the plug travels through high tension leads, but they do not themselves extend into the chamber. FADEC controls when ignition occurs and manages fuel timing, but it does not supply the in-chamber spark. Executor assemblies aren’t part of the ignition path.

Ignition inside the combustion chamber is produced by a component that extends into the chamber and creates a spark. The igniter plug sits with its tip inside the flame zone, and when a high-voltage pulse is applied, a spark jumps across the gap at the plug tip, igniting the fuel-air mixture. This direct, in-chamber spark is what starts combustion and is often relied on during start-up and certain operating conditions for reliable ignition. The energy that reaches the plug travels through high tension leads, but they do not themselves extend into the chamber. FADEC controls when ignition occurs and manages fuel timing, but it does not supply the in-chamber spark. Executor assemblies aren’t part of the ignition path.