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http://dx.doi.org/10.5139/JKSAS.2007.35.7.592

LN2 storage test and damage analysis for a Type 3 cryogenic propellant tank  

Kang, Sang-Guk (한국과학기술원 항공우주공학전공 대학원)
Kim, Myung-Gon (한국과학기술원 항공우주공학전공 대학원)
Park, Sang-Wuk (한국과학기술원 항공우주공학전공 대학원)
Kong, Cheol-Won (한국항공우주연구원 우주발사체사업단 구조그룹)
Kim, Chun-Gon (한국과학기술원 항공우주공학전공)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.35, no.7, 2007 , pp. 592-600 More about this Journal
Abstract
Nowadays, researches for replacing material systems for cryotanks by composites have been being performed for the purpose of lightweight launch vehicle. In this paper, a type 3 propellant tank, which is composed of the composite developed for cryogenic use and an aluminum liner, was fabricated and tested considering actual operating environment, that is, cryogenic temperature and pressure. For this aim, liquid nitrogen (LN2) was injected into the fabricated tank and in turn, gaseous nitrogen (GN2) was used for pressurization. During this test procedure, strains and temperatures on the tank surface were measured. The delamination between hoop layer and helical one, was detected during the experiment. Several attempts were followed to investigate the cause analytically and experimentally. Thermo-elastic analysis in consideration of the progressive failure was done to evaluate the failure index. Experimental approach through a LN2 immersion test of composite/aluminum ring specimens suitable for simulating the Type 3 tank structure.
Keywords
Cryogenic; Type 3 Tank; Liquid Nitrogen Storage; Thermo-elastic Analysis;
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