| Autor: |
Zhou, Yuhang, Gu, Yunsong, Xue, Longsheng, Jiao, Yun, Shi, Nanxing, Deng, Shuai |
| Zdroj: |
Journal of Visualization; Feb2024, Vol. 27 Issue 1, p19-32, 14p |
| Abstrakt: |
The characteristics and control of supersonic jet are hot issues in propulsion system, especially the rectangular underexpanded supersonic jet. In this research, we developed a passive fluidic thrust vectoring nozzle, the characteristics of the shock structure varying with nozzle pressure ratio (NPR) under three working modes were captured by schlieren flow visualization, and the flow topological structures were summarized. The results indicated: when the nozzle was working under the fist mode, the main wave system was "induced shock wave—separated shock wave". When the the nozzle was working under the second mode, the typical structure "oblique shock wave—compression wave" can be separately observed during NPR 3.0–3.8. When the the nozzle was working under the third mode, the non-symmetric expansion appeared on both sides of the jet, then the jet achieved deflection, the maximum vector deflection angle was 10.5° under NPR 3.0. The deflection of the supersonic jet can be realized by switching of the nozzle mode. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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