Pressurizing test of CFRP model tank in cryogenic temperature

“…The tanks were designed so that (i) LN 2 temperature does not harm the tanks without the internal pressurization (ii) internal pressurization at R.T. does not damage them up to the maximum hoop strain of 0.65%; (iii) internal pressurization at LN 2 temperature does not damage them up to 1.1 MPa, which provides 0.45% of maximum hoop strain with linear elastic estimation, and (iv) the leak path forms due to the dense cracking at the maximum hoop strain of about 0.55% at LN 2 temperature. The authors have evaluated the tanks on conditions (i) and (ii) in previous work [13][14][15][16][17][18] showing that the tanks remained intact; thus the design condition of maximum strain has increased the credibility for the CFRP cryogenic tank of RLV. Thereby the authors evaluate the tanks in this work on the condition (iii) to assess if 1.1 MPa of internal pressure will damage the CFRP tank wall at LN 2 temperature.…”

Section: Introductionmentioning

confidence: 99%

Pressurization test on CFRP liner-less tanks at liquefied nitrogen temperature

Morimoto¹,

Ishikawa²,

Yokozeki³

et al. 2004

Advanced Composite Materials

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Two liner-less CFRP concept tanks were prepared for internal pressurization tests at liquefied nitrogen (LN 2 ) temperature. The tanks were designed in two patterns of eight-ply UD quasi-isotropic lay-up, in the shape as a cylinder of 600 mm in diameter and 1200 mm in length, covered with an aluminum flange at one end and with a CFRP hemisphere dome at the other. The maximum strain was applied as the damage onset condition so that the internal pressurization at LN 2 temperature did not damage them up to 1.1 MPa. Damage onsets, such as transverse cracking and leak path formation, were monitored during the tests using helium flow detection, acoustic emission, and pressure-strain monitoring. The CFRP concept tanks showed no damage in the 1.1 mm thick cylindrical gauge section under pressurization up to 1.1 MPa at LN 2 temperature. The design was thus shown to be successful in keeping the CFRP tanks intact.

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“…Japan Aerospace Exploration Agency (JAXA) started the development of cryogenic hydrogen composite tank since late in the 1990s. One of the major results is the pressurization test of fully composite model tank in cryogenic temperature to demonstrate its feasibility for the future reusable space transportation system 3) . Another interesting development is metal-lined composite cryogenic tank, the technology of which has been proven by repeated flights of a vertical takeoff and landing experimental reusable rocket 4) .…”

Section: Introductionmentioning

confidence: 99%

Application of CFRP with High Hydrogen Gas Barrier Characteristics to Fuel Tanks of Space Transportation System

Yonemoto

Yamamoto

Okuyama

et al. 2009

Trans. JSASS Space Tech. Japan

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In the future, carbon fiber reinforced plastics (CFRPs) with high hydrogen gas barrier performance will find wide applications in all industrial hydrogen tanks that aim at weight reduction; the use of such materials will be preferred to the use of conventional metallic materials such as stainless steel or aluminum. The hydrogen gas barrier performance of CFRP will become an important issue with the introduction of hydrogen-fuel aircraft. It will also play an important role in realizing fully reusable space transportation system that will have high specific tensile CFRP structures. Such materials are also required for the manufacture of high-pressure hydrogen gas vessels for use in the fuel cell systems of automobiles. This paper introduces a new composite concept that can be used to realize CFRPs with high hydrogen gas barrier performance for applications in the cryogenic tanks of fully reusable space transportation system by the incorporation of a nonmetallic crystal layer, which is actually a dense and highly oriented clay crystal laminate. The preliminary test results show that the hydrogen gas barrier characteristics of this material after cryogenic heat shocks and cyclic loads are still better than those of other polymer materials by approximately two orders of magnitude.

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Pressurizing test of CFRP model tank in cryogenic temperature

Cited by 4 publications

References 3 publications

Permeability of carbon fibre PEEK composites for cryogenic storage tanks of future space launchers

Permeability of carbon fibre PEEK composites for cryogenic storage tanks of future space launchers

Pressurization test on CFRP liner-less tanks at liquefied nitrogen temperature

Application of CFRP with High Hydrogen Gas Barrier Characteristics to Fuel Tanks of Space Transportation System

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