NASA LogoNTRSNTRS - NASA Technical Reports ServerSearchmore_vertCollectionsAboutNewsHelpLogin Back to ResultsMicrogravity Emissions Laboratory Testing of the Light Microscopy Module Control Box FanThe Microgravity Emissions Laboratory (MEL) was developed at the NASA Glenn Research Center for the characterization, simulation, and verification of the International Space Station (ISS) microgravity environment. This Glenn lab was developed in support of the Fluids and Combustion Facility (FCF). The MEL is a six-degrees-of-freedom inertial measurement system that can characterize the inertial response forces (emissions) of components, subrack payloads, or rack-level payloads down to 10 7g. The inertial force output data generated from the steady-state or transient operations of the test article are used with finite element analysis, statistical energy analysis, and other analysis tools to predict the on-orbit environment at specific science or rack interface locations. Customers of the MEL have used benefits in isolation performance testing in defining available attenuation during the engineering hardware design phase of their experiment s development. The Light Microscopy Module (LMM) Control Box (LCB) fan was tested in the MEL in June and July of 2002. The LMM is planned as a remotely controllable on-orbit microscope subrack facility that will be accommodated in an FCF Fluids Integrated Rack on the ISS. The disturbances measured in the MEL test resulted from operation of the air-circulation fan within the LCB. The objectives of the testing were (1) to identify an isolator to be added to the LCB fan assembly to reduce fan-speed harmonics and (2) to identify the fan-disturbance forcing functions for use in rack-response analysis of the LMM and Fluids Integrated Rack facility. This report describes the MEL, the testing process, and the results from ground-based MEL LCB fan testing.Document ID20030068100Acquisition SourceGlenn Research CenterDocument TypeTechnical Memorandum (TM)AuthorsMcNelis, Anne M.*(NASA Glenn Research Center Cleveland, OH, United States)*Samorezov, Sergey*(ZIN Technologies, Inc. Cleveland, OH, United States)*Haecker, Anthony H.*(Northrop Grumman Corp. Brook Park, OH, United States)*Date AcquiredSeptember 7, 2013Publication DateJuly 1, 2003Subject CategorySpacecraft Design, Testing And PerformanceInstrumentation And PhotographyReport/Patent NumberNAS 1.15:212333NASA/TM-2003-212333E-13927Meeting InformationMeeting: Noise-Con 2003Location: Cleveland, OHCountry: United StatesStart Date: June 23, 2003End Date: June 25, 2003Sponsors:Institute of Noise Control EngineeringFunding Number(s)WBS: WBS-22-400-32-30-03Distribution LimitsPublicCopyrightWork of the US Gov. Public Use Permitted.Available DownloadsNameType20030068100.pdfSTIcloud_downloadcontent_copyvisibilityRelated RecordsThere are no records associated with this record.visibility_offNo Preview Available
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