A Study on Integrated Aerodynamic-Ramp-Injector/Gas-Portfire in A Supersonic Combustor:Part Two,Experimental Aspects
Experimental study of a novel integrated flush-wall aero-ramp fuel injector/gas-portfire for supersonic combustion applications has been conducted. In the experiments, ethylene was injected through the fuel injector at jet to freestream momentum flux ratios (q) ranging from 2.1 -4.5. Color schlieren and surface oil-flow visualization pictures were taken in the vicinity of the injectors to obtain a qualitative assessment of the injector flowfields. In hot flow experiments, the aerodynamic ramp injector with 2×2 holes was investigated as baseline injector. 7 different combined aerodynamic ramp injector experiments were conducted for high equivalence (nearly 1. 0). Results of the experiments showed that the fuel from aero-ramp was mixed up fastly and had a strong interaction with the plume of gas portfire. In the condition of which the simulating flight Mach number is 5, a successful combustion was demonstrated by observing wall-static pressure rise in the combustor. Both subsonic and supersonic combustion modes were observed with ethylene fuel. Onedimensional performance analysis of the test data indicates that combustion efficiencies were 0. 56～0. 94. It is the first time that the integration of an aero-ramp injector/gas-portfire for supersonic combustion has been studied in a paper. It was concluded that this novel injection scheme for supersonic combustion is applicable.
Aerodynamic-Ramp-Injector/Gas-portfire Scramjet Supersonic combustion Subsonic combustion
Wei Baoxi Yan Minglei Yang Yang Lu Ming Tian Liang Shi xinxing Xu Xu
School of Astronautics, Beijing University of Aeronautics and Astronautics,Beijing 100191, China School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China College of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing
国际会议
2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)
西安
英文
1079-1083
2010-09-01（万方平台首次上网日期，不代表论文的发表时间）