A Review on the Selection of Materials and Heat Transfer Properties in Scramjet Engines

Abstract

AbstractThe scramjet engines are considered as one of the important developments of the hypersonic industry. The engines only operate at supersonic velocities; the supersonic combustion process is so fast that the time available for efficient combustion is very less. The heat produce inside the combustor is very high, so selection of materials is one of the crucial parameters in obtaining efficient combustion. The jet propulsion devices demand the use of special materials that have the capacity to withstand the high temperature environment. So, the selection of appropriate materials is one of the primary requirements for designing the scramjet combustor. The paper reviews the different material properties and the applications on the combustor to enhance the performance, durability, and reliability. The paper uses a subjective approach to review the different material properties. The paper also attempts to cover the heat transfer phenomenon inside the combustor as the temperature and pressure generated in the combustor is quite high. Furthermore, the paper finally overviews the properties of the composite materials for the scramjet combustor with the motive to find the appropriate materials that can used further by the researchers in future.KeywordsCompositeCombustorHeat transferMaterialsPropulsionScramjet