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TITLE AND SUBTITLE:
Experimental Investigation of Elastomer Docking Seal Compression Set, Adhesion, and Leakage
AUTHOR(S):
Daniels, Christopher, C.; Oswald, Jay, J.; Bastrzyk, Marta, B.; Smith, Ian; Dunlap, Patrick, H., Jr.; Steinetz, Bruce, M.
REPORT DATE:
2008-01-01
FUNDING NUMBERS:
WBS 644423.06.31.04.01.03.22
PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES):
National Aeronautics and Space Administration John H. Glenn Research Center at Lewis Field Cleveland, Ohio 44135-3191
PERFORMING ORGANIZATION REPORT NUMBER:
E-16227
SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES):
National Aeronautics and Space Administration Washington, DC 20546-0001
REPORT TYPE AND DATES COVERED:
Technical Memorandum
SPONSORING/MONITORING AGENCY REPORT NUMBER:
NASA/TM-2008-215023; AIAA-2007-6197
SUPPLEMENTARY NOTES:
ABSTRACT:
A universal docking and berthing system is being developed by the National Aeronautics and Space Administration (NASA) to support all future space exploration missions to low-Earth orbit (LEO), to the Moon, and to Mars. An investigation of the compression set of two seals mated in a seal-on-seal configuration and the force required to separate the two seals after periods of mating was conducted. The leakage rates of seals made from two silicone elastomer compounds, S0383-70 and S0899-50, configured in seal-on-seal mating were quantified. The test specimens were sub-scale seals with representative cross-sections and a 12 inch outside diameter. The leakage rate of the seals manufactured from S0899-50 was higher than that of the seals made from S0383-70 by a factor of 1.8. Similarly, the adhesion of the 50 durometer elastomer was significantly higher than that of the 70 durometer compound. However, the compression set values of the S0899-50 material were observed to be significantly lower than those for the S0383-70.
SUBJECT TERMS:
Seals; Docking; Berthing; Elastomers; Compression set; Adhesion; CEV; LIDS
NUMBER OF PAGES:
16
PDF AVAILABLE FROM URL:
2008/TM-2008-215023.pdf ( 3754 KB )
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