Combustion Instabilities and its Control Techniques for Liquid Propellant Rocket Engine

It is a great challenge for us to understand and to predict the concept of liquid propellant rocket engines combustion instability due to high complex turbulent combustion process. Traditional methods have been adopted to eliminate the combustion instabilities which will increase system damping. Such methods usually suffer deficiencies with lack of study on fundamental mechanism. Difficulties have been faced during the process of various phenomena such include spray formation process, turbulent multiphase flow conditions, hydrodynamics of injection and transport characteristics of individual droplets. The ultimate aim of every engine design is to prevent occurrence of this combustion instability and to maintain reliable operation during entire span of the combustion process. This article is focused on occurrence of various type of combustion instabilities in liquid propellant rocket engine and its preventing methods in detail.