Combustion performance of RBCC engine with pylon and cavity at ramjet mode

In order to investigate the effective combustion performance in ramjet mode of RBCC, the pylon with cavity was disposed in the chamber of RBCC, and some experiments were taken on the direct-connect experiment system. Through the study, it is showed that the pylon with cavity can improve the combustion performance of fuel and increase the chamber pressure. The results also exhibit that the positions of cavity and pylon in the combustor also affect the combustion performance. For studying more parameters in the combustion flow, one experiment was selected into numerical simulation. Based on the computation results, it shows that the pylon with cavity improves the combustion stabilization, and it provides robust combustion efficiency and wide operability liquid hydrocarbon. And the thermal throat is connected with the rear ramp. It is indicated that good combustion performance can bring thermal throat after cavity.