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Experimental and theoretical studies of cryogenic sealing

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Date Issued:
1996
Summary:
Funded by NASA Kennedy Space Center, this research project was to solve the liquid hydrogen leakage problem in the cryogenic system of Columbia space shuttle. A contracting-expanding self-sealing (CESSC) device was developed by making use of the thermal contraction ratio of dissimilar metals. A research cryostat providing with a high pressure and variable temperature test chamber was built to leak check the cryogenic fittings. A cryogenic research laboratory for the project was established in the Department of Mechanical Engineering, Florida Atlantic University. Both NASA KC126 fitting and the CESSC fitting were tested in the cryogenic testing system. A theoretical approach was also attempted to study the cryogenic leaking phenomenon. A finite element code was developed to simulate the thermal contraction for different CESSC designs. The ANSYS code was also used for the same purpose. The CESSC fittings were successfully used in the space program as well as in the superconducting projects. The principle of the CESSC seal has been extended to solve a variety of problems in cryogenic field.
Title: Experimental and theoretical studies of cryogenic sealing.
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Name(s): Jia, Lin X.
Florida Atlantic University, Degree grantor
Chow, Wen L., Thesis advisor
College of Engineering and Computer Science
Department of Ocean and Mechanical Engineering
Type of Resource: text
Genre: Electronic Thesis Or Dissertation
Issuance: monographic
Date Issued: 1996
Publisher: Florida Atlantic University
Place of Publication: Boca Raton, Fla.
Physical Form: application/pdf
Extent: 146 p.
Language(s): English
Summary: Funded by NASA Kennedy Space Center, this research project was to solve the liquid hydrogen leakage problem in the cryogenic system of Columbia space shuttle. A contracting-expanding self-sealing (CESSC) device was developed by making use of the thermal contraction ratio of dissimilar metals. A research cryostat providing with a high pressure and variable temperature test chamber was built to leak check the cryogenic fittings. A cryogenic research laboratory for the project was established in the Department of Mechanical Engineering, Florida Atlantic University. Both NASA KC126 fitting and the CESSC fitting were tested in the cryogenic testing system. A theoretical approach was also attempted to study the cryogenic leaking phenomenon. A finite element code was developed to simulate the thermal contraction for different CESSC designs. The ANSYS code was also used for the same purpose. The CESSC fittings were successfully used in the space program as well as in the superconducting projects. The principle of the CESSC seal has been extended to solve a variety of problems in cryogenic field.
Identifier: 12448 (digitool), FADT12448 (IID), fau:9343 (fedora)
Collection: FAU Electronic Theses and Dissertations Collection
Note(s): College of Engineering and Computer Science
Thesis (Ph.D.)--Florida Atlantic University, 1996.
Subject(s): Sealing (Technology)
Low temperature research
Held by: Florida Atlantic University Libraries
Persistent Link to This Record: http://purl.flvc.org/fcla/dt/12448
Sublocation: Digital Library
Use and Reproduction: Copyright © is held by the author, with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
Use and Reproduction: http://rightsstatements.org/vocab/InC/1.0/
Host Institution: FAU
Is Part of Series: Florida Atlantic University Digital Library Collections.