NASA LogoNTRSNTRS - NASA Technical Reports ServerSearchmore_vertCollectionsAboutNewsHelpLogin Back to ResultsHigh temperature braided rope seals for static sealing applicationsAchieving efficiency and performance goals of advanced aircraft and industrial systems are leading designers to implement high temperature materials such as ceramics and intermetallics. Generally these advanced materials are applied selectively in the highest temperature sections of the engine system including the combustor and high pressure turbine, amongst others. Thermal strains that result in attaching the low expansion-rate components to high expansion rate superalloy structures can cause significant life reduction in the components. Seals are being designed to both seal and to serve as compliant mounts allowing for relative thermal growths between high temperature but brittle primary structures and the surrounding support structures. Designers require high temperature, low-leakage, compliant seals to mitigate thermal stresses and control parasitic and cooling airflow between structures. NASA is developing high temperature braided rope seals in a variety of configurations to help solve these problems. This paper will describe the types of seals being developed, describe unique test techniques used to assess seal performance, and present leakage flow data under representative pressure, temperature and scrubbing conditions. Feasibility of the braided rope seals for both an industrial tube seal and a turbine vane seal application is also demonstrated.Document ID19960038390Acquisition SourceLegacy CDMSDocument TypeConference PaperAuthorsAdams, Michael L.*(Modern Technologies Corp. Middleburg Heights, OH United States)*Olsen, Andrew*(Northern Research and Engineering Corp. Woburn, MA United States)*Darolia, Ram*(General Electric Co. Cincinnati, OH United States)*Steinetz, Bruce M.*(NASA Lewis Research Center Cleveland,OH United States)*Bartolotta, Paul A.*(NASA Lewis Research Center Cleveland,OH United States)*Date AcquiredSeptember 6, 2013Publication DateJuly 1, 1996Subject CategoryMechanical EngineeringReport/Patent NumberNAS 1.15:107233E-10272AIAA-96-2910NASA-TM-107233Meeting InformationMeeting: Joint Propulsion ConferenceLocation: Lake Buena Vista, FLCountry: United StatesStart Date: July 1, 1996End Date: July 3, 1996Sponsors:Society of Automotive Engineers, Inc.,American Inst. of Aeronautics and Astronautics,American Society of Mechanical Engineers,American Society for Electrical EngineersAccession Number96N30862Funding Number(s)PROJECT: RTOP 505-63-55Distribution LimitsPublicCopyrightWork of the US Gov. Public Use Permitted.Available DownloadsNameType19960038390.pdfSTIcloud_downloadcontent_copyvisibilityRelated RecordsThere are no records associated with this record.visibility_offNo Preview Available
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