Investigation on a new concept of shock vector control nozzle assisted by flashboard

Jing Wei Shi, Zhan Xue Wang, Li Zhou, Xiaolin Sun

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

To improve the vector efficiency of a shock vector control (SVC) nozzle, a new concept on SVC was proposed by introducing an assistant flashboard which helps the secondary flow to manipulate the primary flow to achieve higher vector angle. The flashboard was designed with a secondary flow tunnel inside and was arranged at the divergent section of the nozzle. In the paper, an analysis on the enhancement of the vector efficiency by adopting a flashboard was evaluated. The flow mechanim of a SVC nozzle with flashboard was investigated numerically. The influences of the critical parameters on the flowfields and vector performance of a SVC nozzle with flashboard were studied. And the results show that, compared with a SVC nozzle, the vector efficiency of a SVC nozzle with flashboard was improved by 50%-70%; the position of flashboard, the height of flashboard and secondary pressure ratio determined the configuration and position of the induced shock wave, when the induced shock wave interacted with nozzle lip, the optimal vector angle was obtained; a vector efficiency of 3.68 °/%-ω was achieved at the flashboard position of 0.70, flash height of 0.30, nozzle pressure ratio of 6 and secondary pressure ratio of 0.6.

源语言英语
主期刊名AIAA Scitech 2019 Forum
出版商American Institute of Aeronautics and Astronautics Inc, AIAA
ISBN(印刷版)9781624105784
DOI
出版状态已出版 - 2019
活动AIAA Scitech Forum, 2019 - San Diego, 美国
期限: 7 1月 201911 1月 2019

出版系列

姓名AIAA Scitech 2019 Forum

会议

会议AIAA Scitech Forum, 2019
国家/地区美国
San Diego
时期7/01/1911/01/19

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