带增压压气机的小型脉冲爆震涡轴发动机性能分析

In order to solve the problem that the pulse detonation turboshaft engine (PDTSE) has a difficulty in cooling and sealing the gas turbine due to the pressure increasement in the pulse detonation combustor, a booster behind the main compressor is utilized to increase the pressure ratio of the cooling flow. A performance model is established to study the components characteristics and the overall engine performance of the PDTSE with a booster. The overall performance of PDTSE with a booster and turboshaft were compared and analyzed and the results show that, because of its natural thermal advantage, the performance of PDTSE with a booster is much better than that of turboshaft engine. The results also suggest that at the best performance point of their design spaces with the consideration of the components technology, the thermal efficiency, specific fuel consumption and the specific power improvement of PDTSE with a booster is 15.7%, 9.5% and 26.9%, respectively, compared with turboshaft engine.