Hot surface ignitors are also used in aerospace applications, particularly in aircraft engines and auxiliary power units (APUs). In aerospace, hot surface ignitors are used to ignite the fuel-air mixture in the combustion chamber of jet engines and APUs.

Hot surface ignitors in aerospace applications must meet strict requirements for reliability, durability, and performance. They need to be able to withstand high temperatures, vibrations, and harsh operating conditions typical of aerospace environments.

In aircraft engines, hot surface ignitors play a critical role in the ignition process, ensuring that the fuel-air mixture is ignited efficiently and reliably to power the engine. They are essential for starting the engine and maintaining stable combustion throughout the flight.

In APUs, hot surface ignitors are used to start the auxiliary power unit, which provides electrical power and air conditioning while the aircraft is on the ground. The ignitor helps to ignite the fuel in the APU combustion chamber, allowing it to generate the necessary power for onboard systems.

Overall, hot surface ignitors are an important component in aerospace applications, helping to ensure the safe and efficient operation of aircraft engines and APUs. Their reliability and performance are crucial for the overall safety and performance of aircraft in flight.