Simulation of thrust control by fluidic injection and pintle in a solid rocket motor

Dongfeng Yan; Zhijun Wei; Kan Xie; Ningfei Wang

doi:10.1016/j.ast.2020.105711

Simulation of thrust control by fluidic injection and pintle in a solid rocket motor

Dongfeng Yan, Zhijun Wei, Kan Xie^*, Ningfei Wang

^*Corresponding author for this work

School of Aerospace Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

Thrust control enables solid rocket motors to be more manoeuverable and controllable. To improve the thrust control and anti-ablative performance of solid rocket motors, a new type of motor controlled by secondary flow and a pintle is proposed: numerical simulation of two typical pintle thrusters is presented. The influence of different pintle positions, injection angle, and flow ratios on the effective throat area ratio, outlet pressure, and wall temperature of the pintle were studied. The results showed that the new type of motor can reduce the wall temperature of the pintle. Increasing the secondary flow ratio and injecting the secondary flow in reverse can increase control performance. When the total flow rate is constant, the injection of a secondary flow can reduce the outlet pressure.

Original language	English
Article number	105711
Journal	Aerospace Science and Technology
Volume	99
DOIs	https://doi.org/10.1016/j.ast.2020.105711
Publication status	Published - Apr 2020

Keywords

Ablation protection
Fluidic nozzle throat
Pintle motor
Solid rocket motor
Variable thrust

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10.1016/j.ast.2020.105711

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title = "Simulation of thrust control by fluidic injection and pintle in a solid rocket motor",

abstract = "Thrust control enables solid rocket motors to be more manoeuverable and controllable. To improve the thrust control and anti-ablative performance of solid rocket motors, a new type of motor controlled by secondary flow and a pintle is proposed: numerical simulation of two typical pintle thrusters is presented. The influence of different pintle positions, injection angle, and flow ratios on the effective throat area ratio, outlet pressure, and wall temperature of the pintle were studied. The results showed that the new type of motor can reduce the wall temperature of the pintle. Increasing the secondary flow ratio and injecting the secondary flow in reverse can increase control performance. When the total flow rate is constant, the injection of a secondary flow can reduce the outlet pressure.",

keywords = "Ablation protection, Fluidic nozzle throat, Pintle motor, Solid rocket motor, Variable thrust",

author = "Dongfeng Yan and Zhijun Wei and Kan Xie and Ningfei Wang",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Masson SAS",

year = "2020",

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doi = "10.1016/j.ast.2020.105711",

language = "English",

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T1 - Simulation of thrust control by fluidic injection and pintle in a solid rocket motor

AU - Yan, Dongfeng

AU - Wei, Zhijun

AU - Xie, Kan

AU - Wang, Ningfei

PY - 2020/4

Y1 - 2020/4

N2 - Thrust control enables solid rocket motors to be more manoeuverable and controllable. To improve the thrust control and anti-ablative performance of solid rocket motors, a new type of motor controlled by secondary flow and a pintle is proposed: numerical simulation of two typical pintle thrusters is presented. The influence of different pintle positions, injection angle, and flow ratios on the effective throat area ratio, outlet pressure, and wall temperature of the pintle were studied. The results showed that the new type of motor can reduce the wall temperature of the pintle. Increasing the secondary flow ratio and injecting the secondary flow in reverse can increase control performance. When the total flow rate is constant, the injection of a secondary flow can reduce the outlet pressure.

AB - Thrust control enables solid rocket motors to be more manoeuverable and controllable. To improve the thrust control and anti-ablative performance of solid rocket motors, a new type of motor controlled by secondary flow and a pintle is proposed: numerical simulation of two typical pintle thrusters is presented. The influence of different pintle positions, injection angle, and flow ratios on the effective throat area ratio, outlet pressure, and wall temperature of the pintle were studied. The results showed that the new type of motor can reduce the wall temperature of the pintle. Increasing the secondary flow ratio and injecting the secondary flow in reverse can increase control performance. When the total flow rate is constant, the injection of a secondary flow can reduce the outlet pressure.

KW - Ablation protection

KW - Fluidic nozzle throat

KW - Pintle motor

KW - Solid rocket motor

KW - Variable thrust

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DO - 10.1016/j.ast.2020.105711

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VL - 99

JO - Aerospace Science and Technology

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Simulation of thrust control by fluidic injection and pintle in a solid rocket motor

Abstract

Keywords

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