TY - GEN
T1 - Investigation on a new concept of shock vector control nozzle assisted by flashboard
AU - Shi, Jing Wei
AU - Wang, Zhan Xue
AU - Zhou, Li
AU - Sun, Xiaolin
N1 - Publisher Copyright:
© 2019 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
PY - 2019
Y1 - 2019
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85083942435&partnerID=8YFLogxK
U2 - 10.2514/6.2019-1686
DO - 10.2514/6.2019-1686
M3 - 会议稿件
AN - SCOPUS:85083942435
SN - 9781624105784
T3 - AIAA Scitech 2019 Forum
BT - AIAA Scitech 2019 Forum
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Scitech Forum, 2019
Y2 - 7 January 2019 through 11 January 2019
ER -