LAPSE:2018.1126
Published Article
LAPSE:2018.1126
Thermo-Structural Response Caused by Structure Gap and Gap Design for Solid Rocket Motor Nozzles
Lin Sun, Futing Bao, Ning Zhang, Weihua Hui, Shaozeng Wang, Nan Zhang, Heng Deng
November 28, 2018
The thermo-structural response of solid rocket motor nozzles is widely investigated in the design of modern rockets, and many factors related to the material properties have been considered. However, little work has been done to evaluate the effects of structure gaps on the generation of flame leaks. In this paper, a numerical simulation was performed by the finite element method to study the thermo-structural response of a typical nozzle with consideration of the structure gap. Initial boundary conditions for thermo-structural simulation were defined by a quasi-1D model, and then coupled simulations of different gap size matching modes were conducted. It was found that frictional interface treatment could efficiently reduce the stress level. Based on the defined flame leak criteria, gap size optimization was carried out, and the best gap matching mode was determined for designing the nozzle. Testing experiment indicated that the simulation results from the proposed method agreed well with the experimental results. It is believed that the simulation method is effective for investigating thermo-structural responses, as well as designing proper gaps for solid rocket motor nozzles.
Keywords
frictional interfaces, gap design, structure gap, thermo-structural
Suggested Citation
Sun L, Bao F, Zhang N, Hui W, Wang S, Zhang N, Deng H. Thermo-Structural Response Caused by Structure Gap and Gap Design for Solid Rocket Motor Nozzles. (2018). LAPSE:2018.1126
Author Affiliations
Sun L: Science and Technology on Combustion Internal Flow and Thermal-structure Laboratory, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, China; School of Astronautics, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, China
Bao F: Science and Technology on Combustion Internal Flow and Thermal-structure Laboratory, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, China; School of Astronautics, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, China
Zhang N: Aviation Equipment Research Institute, AVIC Qing-an Group Co., Ltd., Xi’an 710077, Shaanxi, China
Hui W: Science and Technology on Combustion Internal Flow and Thermal-structure Laboratory, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, China; School of Astronautics, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, China
Wang S: Xi’an Modern Control Technology Research Institute, Xi’an 710065, Shaanxi, China
Zhang N: Xi’an Modern Control Technology Research Institute, Xi’an 710065, Shaanxi, China
Deng H: Xi’an Modern Control Technology Research Institute, Xi’an 710065, Shaanxi, China
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Journal Name
Energies
Volume
9
Issue
6
Article Number
E430
Year
2016
Publication Date
2016-06-02
Published Version
ISSN
1996-1073
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Original Submission
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PII: en9060430, Publication Type: Journal Article
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LAPSE:2018.1126
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doi:10.3390/en9060430
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Nov 28, 2018
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Nov 28, 2018
 
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Calvin Tsay
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