Why are turbine engine igniters generally resistant to carbon fouling?

Turbine engine igniters are designed to produce high energy sparks, which is the primary reason they are generally resistant to carbon fouling. The ignition process in turbine engines requires a reliable and intense spark to ignite the fuel-air mixture, especially under conditions where carbon can accumulate, such as during starting or low-power settings.

The high energy output of these sparks helps to ensure that any carbon deposits that may begin to form on the igniter are effectively burned off or dissipated. This attribute keeps the igniter's performance consistent, reducing maintenance issues associated with carbon buildup.

While the other options may present interesting considerations about igniter design and performance, they do not specifically address the fundamental relationship between the energy output during sparking and the prevention of carbon fouling. This makes the generation of high energy sparks crucial in maintaining a clean and functional ignition system in turbine engines.