TY - GEN
T1 - The Effect of Fluidic Pintle Nozzle on the Ablative Features
AU - Yang, Zheng
AU - Xie, Kan
AU - Li, Xiang
AU - Yan, Dongfeng
AU - Li, Junwei
AU - Wang, Ningfei
N1 - Publisher Copyright:
© 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
PY - 2023
Y1 - 2023
N2 - Fluidic Pintle Nozzle (FPN) combines mechanical and fluidic schemes to inject secondary flow at the head of the pintle to change the mainstream gas profile. As a means of mechanical combined with fluidic regulation, this method has not completed systematic research since it was proposed, and the current research is still in the basic theoretical stage, with insufficient research on its basic laws, flow mechanism, influencing factors, ablative protection and so on. This paper focuses on the influence of injecting secondary flow at the head of the pintle on the ablation of the fluidic pintle nozzle of the solid rocket motor, the surface chemical reaction model under fluid–solid coupling was established, and fluent commercial software was used for numerical calculation. The basic law and influencing factors of the ablative rate with a different opening, injection position, and secondary flow temperature were studied on the ablation rate of the nozzle were studied. The results show that the ablation rate of the nozzle is significantly different under the different openings. A low-temperature jet can effectively reduce the temperature of the pintle, reduce the ablation rate of the pintle, and has a significant protective effect on the pintle downstream of the injection hole.
AB - Fluidic Pintle Nozzle (FPN) combines mechanical and fluidic schemes to inject secondary flow at the head of the pintle to change the mainstream gas profile. As a means of mechanical combined with fluidic regulation, this method has not completed systematic research since it was proposed, and the current research is still in the basic theoretical stage, with insufficient research on its basic laws, flow mechanism, influencing factors, ablative protection and so on. This paper focuses on the influence of injecting secondary flow at the head of the pintle on the ablation of the fluidic pintle nozzle of the solid rocket motor, the surface chemical reaction model under fluid–solid coupling was established, and fluent commercial software was used for numerical calculation. The basic law and influencing factors of the ablative rate with a different opening, injection position, and secondary flow temperature were studied on the ablation rate of the nozzle were studied. The results show that the ablation rate of the nozzle is significantly different under the different openings. A low-temperature jet can effectively reduce the temperature of the pintle, reduce the ablation rate of the pintle, and has a significant protective effect on the pintle downstream of the injection hole.
KW - Aerodynamic throat
KW - Fluidic pintle nozzle
KW - Solid rocket motor
KW - Thermochemical erosion
UR - http://www.scopus.com/inward/record.url?scp=85151050922&partnerID=8YFLogxK
U2 - 10.1007/978-981-19-8955-1_22
DO - 10.1007/978-981-19-8955-1_22
M3 - Conference contribution
AN - SCOPUS:85151050922
SN - 9789811989544
T3 - Springer Proceedings in Physics
SP - 327
EP - 344
BT - Liutex and Third Generation of Vortex Identification - Workshop from Aerospace and Aeronautics World Forum 2021
A2 - Wang, Yiqian
A2 - Gao, Yisheng
A2 - Liu, Chaoqun
PB - Springer Science and Business Media Deutschland GmbH
T2 - Aerospace and Aeronautics World Forum, 2021
Y2 - 2 December 2021 through 4 December 2021
ER -