Experimental investigation of hot and cold side jet interaction with a supersonic cross-flow |
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| Authors: | Bernhard Stahl Hans Emunds Ali Gülhan |
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| Institution: | 1. School of Aeronautic Science and Engineering, Beihang University, Beijing, 100191, China;2. School of Energy and Power Engineering, Shandong University, Jinan, Shandong, 250100, China;1. Institute of Fluid Science, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan;2. The School of MACE, The University of Manchester, Manchester M13 9PL, UK;3. School of Engineering, University of Glasgow, Scotland G12 8QQ, UK;4. General Electric Aviation, Marmara Technology Center, Gebze, Kocaeli, 41471 Turkey |
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| Abstract: | This paper reports on experimental aerodynamic investigations on a high-speed missile with side jet control especially with regard to the interaction of cold and hot side jets with supersonic cross-flow. The hot jets were generated with solid propellants. To analyze the effect of the hot jet in relation to side jet control, wall pressure distributions were measured in the area of jet interaction. As a test parameter, the jet pressure ratio was varied and schlieren images were taken to visualize the shocks. In addition, the development of large-scale vortex structures on hot gas jets was detected with high-speed videos. The frame sequences show periodical turbulent jet structures and permit the manual evaluation of their spatial distribution. Analyzing the images, the convection velocities of the large-scale structures and their convection angles were determined. The convection velocities reach the magnitude of cross-flow velocity shortly behind the hot jet exit. |
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