Combustion instability

Combustion instability refers to fluctuations in the burning process that cause uneven pressure and temperature changes within a combustion chamber, such as in engines or rockets. These fluctuations can lead to loud noises, vibrations, or even damage to the equipment. They occur when the heat release from the fuel and air mixture interacts unpredictably with the airflow and chamber acoustics, creating feedback loops. Controlling these instabilities is crucial to ensure efficient, safe, and reliable operation of engines that rely on combustion.