Browse > Article
http://dx.doi.org/10.5139/JKSAS.2008.36.3.271

Bulging Process of Liquid Rocket Combustion Chamber Nozzle  

Ryu, Chul-Sung (한국항공우주연구원 연소기팀)
Choi, Hwan-Seok (한국항공우주연구원 연소기팀)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.36, no.3, 2008 , pp. 271-278 More about this Journal
Abstract
A study has been conducted on the bulging process of liquid rocket engine nozzle which is essential to the manufacturing regenerative cooling combustion chamber. Mechanical properties of the material used for the bulging were experimentally obtained by tension tests. Deformation of the bulged nozzle was confirmed by a structural analysis. The developed bulging process and the deformation analysis result were confirmed by manufacturing of the bulged nozzle specimens and the bulging test. There has been a bulging failure among 7 bulged specimens due to the necking of the material. The cause of necking was investigated by comparing microstructure of the material. The investigation has revealed grain size of the material has considerable effect on the occurrence of the necking.
Keywords
Liquid Rocket Combustion Chamber; Regenerative Cooling; Bulging Process; Necking; Grain; Elongation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Yuung-Hwa Lu, "Study of tube flaring ratio and strain rate in the tube flaring process", Finite Eleemnts in Analysis and Design, Vol. 40, 2004, pp. 305-318   DOI   ScienceOn
2 F. D. Fischer, F. G. Rammerstorfer, and T. Daxner, "Flaring-An analytical approach", International Journal of Mechanical Sciences, Vol. 48, 2006, pp.1246-1255   DOI   ScienceOn
3 MARC General Purpose Finite Element Program, MARC Analysis Research Corporation, Palo Alto, Vol. A-D, 2001
4 Y. M. Hung and Y. M. Huang, "Elasto-plastic Finite-Element Analysis of the Axisymmetric Tube-Flaring Process with Conical Punch", The international Journal of Advanced manufacturing technology, Vol. 18 2001, pp.390-398   DOI
5 T. Daxner, F. G. Rammerstorfer, and F. D. Fischer, "Instability phenomena during the conical expansion of circular cylindrical shells", Comput. Methods Appl. Mech. Engrg., Vol. 194, 2005, pp. 2591-2603   DOI   ScienceOn
6 R. Kindermann et al., "Advanced production and process technologies for current and future thrust chambers of liquid rocket engines", 4th International Conference on Launcher Technology, Space Launcher Liquid Propulsion, December 2002, Belgium
7 류철성, 백운봉, 최환석, "액체로켓 연소기용 구리합금의 열/기계적 특성에 관한 실험적 연구", 대한기계학회 A권, 제 30권 11호, 2006, pp. 1494-1501   과학기술학회마을   DOI
8 Standard Test Method for Tension Testig of Metalic Materials[Metric] (ASTM E 8 M)
9 류철성, 최환석, 이동주, "액체로켓 연소기 재생냉각 챔버 구조설계", 한국항공우주학회지, 제 33권 12호, 2005