NASA LogoNTRSNTRS - NASA Technical Reports ServerSearchmore_vertCollectionsAboutNewsHelpLogin Back to ResultsExamination of the Structural Response of the Orion European Service Module to Reverberant and Direct Field Acoustic TestingThe NASA Orion Multi-Purpose Crew Vehicle (MPCV), comprised of the Service Module, the Crew Module, and the Launch Abort System, is the next generation human spacecraft designed and built for deep space exploration. Orion will launch on NASAs new heavy-lift rocket, the Space Launch System. The European Space Agency (ESA) is responsible for providing the propulsion sub-assembly of the Service Module to NASA, called the European Service Module (ESM). The ESM is being designed and built by Airbus Safran Launchers for ESA. Traditionally, NASA has utilized reverberant acoustic testing for qualification of spaceflight hardware. The ESM Structural Test Article (E-STA) was tested at the NASA Plum Brook Stations (PBS) Reverberant Acoustic Test Facility in April-May 2016. However, Orion is evaluating an alternative acoustic test method, using direct field acoustic excitation, for the MPCVs Service Module and Crew Module. Lockheed Martin is responsible for the Orion proof-of-concept direct field acoustic test program. The E-STA was exposed to direct field acoustic testing at NASA PBS in February 2017. This paper compares the dynamic response of the E-STA structure and its components to both the reverberant and direct field acoustic test excitations. Advantages and disadvantages of direct field acoustic test excitation method are discussed.Document ID20170010710Acquisition SourceGlenn Research CenterDocument TypeTechnical Memorandum (TM)AuthorsMcNelis, Mark E.*(NASA Glenn Research Center Cleveland, OH, United States)*Hughes, William O.*(NASA Glenn Research Center Cleveland, OH, United States)*Larko, Jeffrey M.*(NASA Glenn Research Center Cleveland, OH, United States)*Bittinger, Samantha A.*(NASA Glenn Research Center Cleveland, OH, United States)*Le-Plenier, Cyprien*(Airbus Safran Launchers Les Mureaux, France)*Fogt, Vincent A.*(NASA Johnson Space Center Houston, TX, United States)*Ngan, Ivan*(European Space Agency. European Space Research and Technology Center, ESTEC Noordwijk, Netherlands)*Thirkettle, Anthony C.*(European Space Agency. European Space Research and Technology Center, ESTEC Noordwijk, Netherlands)*Skinner, Mitch*(Lockheed Martin Corp. Denver, CO, United States)*Larkin, Paul*(Maryland Sound International-Direct Field Acoustic Test (MSI-DFAT) Baltimore, MD, United States)*Date AcquiredNovember 7, 2017Publication DateSeptember 1, 2017Subject CategoryGround Support Systems And Facilities (Space)Spacecraft Design, Testing And PerformanceSpacecraft Propulsion And PowerAcousticsReport/Patent NumberE-19413NASA/TM-2017-219564GRC-E-DAA-TN45759Meeting InformationMeeting: International Congress on Sound and Vibration (ICSV 24)Location: London, EnglandCountry: United KingdomStart Date: July 23, 2017End Date: July 27, 2017Sponsors:International Congress on Sound and VibrationFunding Number(s)WBS: WBS 747797.06.13.06.30.03Distribution LimitsPublicCopyrightPublic Use Permitted.KeywordsAcousticsTestingQualificationQualificationTestingAvailable DownloadsNameType20170010710.pdfSTIcloud_downloadcontent_copyvisibilityRelated RecordsIDRelationTitle20170009577See AlsoExamination of the Structural Response of the Orion European Service Module to Reverberant and Direct Field Acoustic Testingvisibility_offNo Preview Available
 No Fear Act | Freedom of Information Act | Office of the Inspector General | Agency Financial ReportsNASA Web Privacy Policy and Important Notices | NASA Guidelines for Quality of InformationDisclaimers, Copyright, Terms of Use | Accessibility | NASA OCIO | USA.gov | NASA.govContact Us | Site MapSTI LogoNASA Official: JoAnne R. Calhoun Site Curator: STI Compliance and Distribution Services Last Modified: September 12, 2024