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Journal of Applied Sciences

Year: 2013 | Volume: 13 | Issue: 14 | Page No.: 2744-2751
DOI: 10.3923/jas.2013.2744.2751
Influencing Analysis to Nozzle’s Inner Flow Field of Different Pintle Radius and Shapes
Pengwen Sun, Xiongxiang Zhao and Jiajia Gao

Abstract: The pintle controlled thrust regulating mechanism is an effective means to realize thrust real-time regulatation of solid-rocket engine. Factors of thrust regulating range and speed, thrust loss, reacting force on pintle section should be considered in pintle design. Basic equation of liquid motion and turbulence model of nozzle’s inner flow flied are analyzed. Geometry model of nozzle is established. Numerical simulation on inner flow field of nozzle for different radius pintle, different head coning of pointed cone pintle and different head ellipticity of ellipsoidal pintle had been carried and the flow field changing was analyzed. The changing rule of thrust regulating under different conditions was gotten. These results provide theoretical guidance for pintle design.

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How to cite this article
Pengwen Sun, Xiongxiang Zhao and Jiajia Gao, 2013. Influencing Analysis to Nozzle’s Inner Flow Field of Different Pintle Radius and Shapes. Journal of Applied Sciences, 13: 2744-2751.

Keywords: Thrust regulating, pintle size and shape, inner flow field, numerical analysis and nozzle

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