Projeto conceitual de scramjets para voo hipersônico e análise comparativa da influência do número de rampas no desempenho do motor

Abstract

Maintaining hypersonic flight has always been a major challenge for aerospace engineering, such as designing structures that can withstand high pressures and temperatures, or propulsive elements capable of generating thrust in such a situation. The scramjet technology presents itself as a possible strategy that allows flights at speeds greater than five times the speed of sound, such technology dispenses the need for compressors, shafts and turbines, all its operation occurs from the variations of the flow properties. The present work then seeks to design two scramjets that are capable of operating at 32 km altitude at Mach 8. The first model has only a single ramp in the compression section and the second model has five ramps in the compression section. It was noted that the five-ramp model has a higher efficiency and was able to generate more thrust, but the simplicity of manufacturing in the single-ramp model can be a great advantage in the development of the project.