Scramjets and their role in the future of aerospace propulsion systems

Scramjet is a jet engine designed to fly at high speeds, and is actually a ramjet engine in which combustion takes place in supersonic conditions. Considering that the main use of this type of engine is in the aerospace industry and the development of this type of engine results in a major transformation in this industry, researchers are working to remove the technological barriers associated with these engines. The main objective of this paper is to investigate the performance of scramjet engines to provide the propulsion force of flying vehicles with high flying speeds. The behavior of the components, thermodynamic cycle of the engine, combustion chamber's cooling methods, material used in combustion chamber, the fuels used in this type of engines, and the burning stability problem in the present study have been discussed.