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NASA/SP—2000–6110Failure Modes and Effects Analysis (FMEA)A BibliographyNational Aeronautics and Space AdministrationJuly 2000

The NASA STI Program Office . in ProfileSince its founding, NASA has been dedicated tothe advancement of aeronautics and spacescience. The NASA Scientific and TechnicalInformation (STI) Program Office plays a keypart in helping NASA maintain this importantrole.The NASA STI Program Office is operated byLangley Research Center, the lead center forNASA’s scientific and technical information. TheNASA STI Program Office provides access to theNASA STI Database, the largest collection ofaeronautical and space science STI in the world.The Program Office is also NASA’s institutionalmechanism for disseminating the results of itsresearch and development activities. These resultsare published by NASA in the NASA STI ReportSeries, which includes the following report types: TECHNICAL PUBLICATION. Reports ofcompleted research or a major significantphase of research that present the results ofNASA programs and include extensive dataor theoretical analysis. Includescompilations of significant scientific andtechnical data and information deemed tobe of continuing reference value. NASAcounterpart of peer-reviewed formalprofessional papers, but having lessstringent limitations on manuscript lengthand extent of graphic presentations.TECHNICAL MEMORANDUM.Scientific and technical findings that arepreliminary or of specialized interest, e.g.,quick release reports, working papers, andbibliographies that contain minimalannotation. Does not contain extensiveanalysis.CONTRACTOR REPORT. Scientific andtechnical findings by NASA-sponsoredcontractors and grantees. CONFERENCE PUBLICATION.Collected papers from scientific andtechnical conferences, symposia,seminars, or other meetings sponsored orco-sponsored by NASA. SPECIAL PUBLICATION. Scientific,technical, or historical information fromNASA programs, projects, and missions,often concerned with subjects havingsubstantial public interest. TECHNICAL TRANSLATION. Englishlanguage translations of foreign scientificand technical material pertinent toNASA’s mission.Specialized services that complement the STIProgram Office’s diverse offerings includecreating custom thesauri, building customizeddatabases, organizing and publishing researchresults . even providing videos.For more information about the NASA STIProgram Office, see the following: Access the NASA STI Program HomePage at http://www.sti.nasa.gov E-mail your question via the Internet tohelp@sti.nasa.gov Fax your question to the NASA STI HelpDesk at (301) 621-0134 Telephone the NASA STI Help Desk at(301) 621-0390 Write to:NASA STI Help DeskNASA Center for AeroSpace Information7121 Standard DriveHanover, MD 21076-1320

NASA/SP—2000–6110Failure Mode and Effects Analysis (FMEA)A BibliographyNational Aeronautics andSpace AdministrationNASA Scientific and TechnicalInformation ProgramJuly 2000

IntroductionFailure modes and effects analysis (FMEA) is a bottom–up analytical process which identifies processhazards. This bibliography contains references to documents in the NASA Scientific and TechnicalInformation (STI) Database. The selections are based on the major concepts and other NASA Thesaurusterms, including ’failure analysis.’ An abstract is included with most citations.Items are first categorized by 10 major subject divisions, then further divided into 76 specific subjectcategories, based on the NASA Scope and Subject Category Guide. The subject divisions and categories arelisted in the Table of Contents together with a note for each that defines its scope and provides anycross-references.Two indexes, Subject Term and Personal Author are also included. The Subject Term Index is generatedfrom the NASA Thesaurus terms associated and listed with each document.You may order one or more of the documents presented. For further details or questions, please call theNASA STI Help Desk at 301-621-0390 or send e-mail to help@sti.nasa.gov.iii

SCAN Goes Electronic!If you have electronic mail or if you can access the Internet, you can view biweekly issues of SCAN fromyour desktop absolutely free!Electronic SCAN takes advantage of computer technology to inform you of the latest worldwide, aerospacerelated, scientific and technical information that has been published.No more waiting while the paper copy is printed and mailed to you. You can view Electronic SCAN the sameday it is released—up to 191 topics to browse at your leisure. When you locate a publication of interest, youcan print the announcement. You can also go back to the Electronic SCAN home page and follow the orderinginstructions to quickly receive the full document.Start your access to Electronic SCAN today. Over 1,000 announcements of new reports, books, conferenceproceedings, journal articles.and more—available to your computer every two weeks.For Internet access to E-SCAN, use any of the following opher.sti.nasa.govTo receive a free subscription, send e-mail for complete information about the service first. Enterscan@sti.nasa.gov on the address line. Leave the subject and message areas blank and send. You willreceive a reply in minutes.Then simply determine the SCAN topics you wish to receive and send a second e-mail tolistserv@sti.nasa.gov. Leave the subject line blank and enter a subscribe command, denoting which topicyou want and your name in the message area, formatted as follows:Subscribe SCAN–02–01 Jane DoeFor additional information, e-mail a message to help@sti.nasa.gov.Phone: (301) 621-0390Fax: (301) 621-0134Write:NASA STI Help DeskNASA Center for AeroSpace Information7121 Standard DriveHanover, MD 21076-1320Looking just for Aerospace Medicine and Biology reports?Although hard copy distribution has been discontinued, you canstill receive these vital announcements through your E-SCANsubscription. Just Subscribe SCAN-AEROMED Jane Doein the message area of your e-mail to ÎÎÎÎÎÎ

Table of ContentsSubject DivisionsDocument citations are grouped first by the following divisions. Select a division title to view thecategory-level Table of Contents.A. AeronauticsH. PhysicsB. AstronauticsI.C. Chemistry and MaterialsJ. Space SciencesD. EngineeringK. GeneralSocial and Information SciencesE. GeosciencesF. Life SciencesG. Mathematical and Computer SciencesIndexesTwo indexes are available. You may use the find command under the tools menu while viewing thePDF file for direct match searching on any text string. You may also select either of the two indexesprovided for searching on NASA Thesaurus subject terms and personal author names.Subject Term IndexPersonal Author IndexDocument AvailabilitySelect Availability Info for important information about NASA Scientific and TechnicalInformation (STI) Program Office products and services, including registration with the NASACenter for AeroSpace Information (CASI) for access to the NASA CASI TRS (Technical ReportServer), and availability and pricing information for cited documents.v

Subject Categories of the Division A. AeronauticsSelect a category to view the collection of records cited. N.A. means no abstracts in that category.01Aeronautics (General)1Includes general research topics related to manned and unmanned aircraft and the problemsof flight within the Earth’s atmosphere. Also includes manufacturing, maintenance, andrepair of aircraft. For specific topics in aeronautics see categories 02 through 09. Forinformation related to space vehicles see 12 Astronautics.02AerodynamicsN.A.Includes aerodynamics of flight vehicles, test bodies, airframe components andcombinations, wings, and control surfaces. Also includes aerodynamics of rotors, stators,fans and other elements of turbomachinery. For related information, see also 34 FluidMechanics and Heat Transfer.03Air Transportation and Safety1Includes passenger and cargo air transport operations; aircraft ground operations; flightsafety and hazards; and aircraft accidents. Systems and hardware specific to groundoperations of aircraft and to airport construction are covered in 09 Research and SupportFacilities (Air). Air traffic control is covered in 04 Aircraft Communications and Navigation.For related information see also 16 Space Transportation and Safety; and 85 TechnologyUtilization and Surface Transportation.04Aircraft Communications and Navigation2Includes all modes of communication with and between aircraft; air navigation systems(satellite and ground based); and air traffic control. For related information see also 06Avionics and Aircraft Instrumentation; 17 Space Communications; SpacecraftCommunications, Command and Tracking, and 32 Communications and Radar.05Aircraft Design, Testing and Performance4Includes all stages of design of aircraft and aircraft structures and systems. Also includesaircraft testing, performance, and evaluation, and aircraft and flight simulation technology.For related information, see also 18 Spacecraft Design, Testing and Performance and 39Structural Mechanics. For land transportation vehicles, see 85 Technology Utilization andSurface Transportation.06Avionics and Aircraft Instrumentation5Includes all avionics systems, cockpit and cabin display devices; and flight instrumentsintended for use in aircraft. For related information, see also 04 Aircraft Communicationsand Navigation; 08 Aircraft Stability and Control; 19 Spacecraft Instrumentation andAstrionics; and 35 Instrumentation and Photography.vi

07Aircraft Propulsion and Power6Includes prime propulsion systems and systems components, e.g., gas turbine engines andcompressors; and onboard auxiliary power plants for aircraft. For related information seealso 20 Spacecraft Propulsion and Power, 28 Propellants and Fuels, and 44 EnergyProduction and Conversion.08Aircraft Stability and ControlN.A.Includes flight dynamics, aircraft handling qualities; piloting; flight controls; and autopilots.For related information, see also 05 Aircraft Design, Testing and Performance and 06Avionics and Aircraft Instrumentation.09Research and Support Facilities (Air)N.A.Includes airports, runways, hangars, and aircraft repair and overhaul facilities; wind tunnels,water tunnels, and shock tubes; flight simulators; and aircraft engine test stands. Alsoincludes airport ground equipment and systems. For airport ground operations see 03 AirTransportation and Safety. For astronautical facilities see 14 Ground Support Systems andFacilities (Space).Subject Categories of the Division B. AstronauticsSelect a category to view the collection of records cited. N.A. means no abstracts in that category.12Astronautics (General)9Includes general research topics related to space flight and manned and unmanned spacevehicles, platforms or objects launched into, or assembled in, outer space; and relatedcomponents and equipment. Also includes manufacturing and maintenance of such vehiclesor platforms. For specific topics in astronautics see categories 13 through 20. Forextraterrestrial exploration, see 91 Lunar and Planetary Science and Exploration.13AstrodynamicsN.A.Includes powered and free-flight trajectories; and orbital and launching dynamics.14Ground Support Systems and Facilities (Space)10Includes launch complexes, research and production facilities; ground support equipment,e.g., mobile transporters; and test chambers and simulators. Also includes extraterrestrialbases and supporting equipment. For related information see also 09 Research and SupportFacilities (Air).15Launch Vehicles and Launch OperationsN.A.Includes all classes of launch vehicles, launch/space vehicle systems, and boosters; andlaunch operations. For related information see also 18 Spacecraft Design, Testing, andPerformance; and 20 Spacecraft Propulsion and Power.vii

16Space Transportation and Safety10Includes passenger and cargo space transportation, e.g., shuttle operations; and space rescuetechniques. For related information, see also 03 Air Transportation and Safety and 15 LaunchVehicles and Launch Vehicles, and 18 Spacecraft Design, Testing and Performance. Forspace suits, see 54 Man/System Technology and Life Support.17Space Communications, Spacecraft Communications, Commandand TrackingN.A.Includes space systems telemetry; space communications networks; astronavigation andguidance; and spacecraft radio blackout. For related information, see also 04 AircraftCommunications and Navigation and 32 Communications and Radar.18Spacecraft Design, Testing and Performance45Includes satellites; space platforms; space stations; spacecraft systems and components suchas thermal and environmental controls; and spacecraft control and stability characteristics.For life support systems, see 54 Man/System Technology and Life Support. For relatedinformation, see also 05 Aircraft Design, Testing and Performance, 39 StructuralMechanics, and 16 Space Transportation and Safety.19Spacecraft Instrumentation and AstrionicsN.A.Includes the design, manufacture, or use of devices for the purpose of measuring, detecting,controlling, computing, recording, or processing data related to the operation of spacevehicles or platforms. For related information, see also 06 Aircraft Instrumentation andAvionics; For spaceborne instruments not integral to the vehicle itself see 35 Instrumentationand Photography; For spaceborne telescopes and other astronomical instruments see 89Astronomy, Instrumentation and Photography; For spaceborne telescopes and otherastronomical instruments see 89 Astronomy.20Spacecraft Propulsion and Power46Includes main propulsion systems and components, e.g., rocket engines; and spacecraftauxiliary power sources. For related information, see also 07 Aircraft Propulsion and Power;28 Propellants and Fuels; 15 Launch Vehicles and Launch Operations; and 44 EnergyProduction and Conversion.Subject Categories of the Division C. Chemistry andMaterialsSelect a category to view the collection of records cited. N.A. means no abstracts in that category.23Chemistry and Materials (General)N.A.Includes general research topics related to the composition, properties, structure, and use ofchemical compounds and materials as they relate to aircraft, launch vehicles, and spacecraft.For specific topics in chemistry and materials see categories 24 through 29. Forastrochemistry see category 90 Astrophysics.viii

24Composite Materials53Includes physical, chemical, and mechanical properties of laminates and other compositematerials.25Inorganic, Organic, and Physical ChemistryN.A.Includes the analysis, synthesis, and use inorganic and organic compounds; combustiontheory; electrochemistry; and photochemistry. For related information see also 34 FluidDynamics and Thermodynamics, For astrochemistry see category 90 Astrophysics.26Metals and Metallic Materials68Includes physical, chemical, and mechanical properties of metals and metallic materials; andmetallurgy.27Nonmetallic Materials70Includes physical, chemical, and mechanical properties of plastics, elastomers, lubricants,polymers, textiles, adhesives, and ceramic materials. For composite materials see 24Composite Materials.28Propellants and Fuels72Includes rocket propellants, igniters and oxidizers; their storage and handling procedures;and aircraft fuels. For nuclear fuels see 73 Nuclear Physics. For related information see also07 Aircraft Propulsion and Power, 20 Spacecraft Propulsion and Power, and 44 EnergyProduction and Conversion.29Space ProcessingN.A.Includes space-based development of materials, compounds, and processes for research orcommercial application. Also includes the development of materials and compounds insimulated reduced–gravity environments. For legal aspects of space commercialization see84 Law, Political Science and Space Policy.Subject Categories of the Division D. EngineeringSelect a category to view the collection of records cited. N.A. means no abstracts in that category.31Engineering (General)74Includes general research topics to engineering and applied physics, and particular areas ofvacuum technology, industrial engineering, cryogenics, and fire prevention. For specifictopics in engineering see categories 32 through 39.ix

32Communications and RadarN.A.Includes radar; radio, wire, and optical communications; land and global communications;communications theory. For related information see also 04 Aircraft Communications andNavigation; and 17 Space Communications, Spacecraft Communications, Command andTracking; for search and rescue see 03 Air Transportation and Safety, and 16 SpaceTransportation and Safety.33Electronics and Electrical Engineering74Includes development, performance, and maintainability of electrical/electronic devices andcomponents; related test equipment. and microelectronics and integrated circuitry. Forrelated information see also 60 Computer Operations and Hardware; and 76 Solid-StatePhysics. For communications equipment and devices see 32 Communications and Radar.34Fluid Mechanics and ThermodynamicsN.A.Includes fluid dynamics and kinematics and all forms of heat transfer; boundary layer flow;hydrodynamics; hydraulics; fluidics; mass transfer and ablation cooling. For relatedinformation see also 02 Aerodynamics.35Instrumentation and Photography79Includes remote sensors; measuring instruments and gauges; detectors; cameras andphotographic supplies; and holography. For aerial photography see 43 Earth Resources andRemote Sensing. For related information see also 06 Avionics and Aircraft Instrumentation;and 19 Spacecraft Instrumentation.36Lasers and Masers80Includes lasing theory, laser pumping techniques, maser amplifiers, laser materials, and theassessment of laser and maser outputs. For cases where the application of the laser or maseris emphasized see also the specific category where the application is treated. For relatedinformation see also 76 Solid-State Physics.37Mechanical Engineering81Includes mechanical devices and equipment; machine elements and processes. For caseswhere the application of a device or the host vehicle is emphasized see also the specificcategory where the application or vehicle is treated. For robotics see 63 Cybernetics,Artificial Intelligence, and Robotics; and 54 Man/System Technology and Life Support.38Quality Assurance and Reliability86Includes approaches to, and methods for reliability analysis and control, inspection,maintainability, and standardization.x

39Structural Mechanics111Includes structural element design, analysis and testing; dynamic responses of structures;weight analysis; fatigue and other structural properties; and mechanical and thermal stressesin structure. For applications see 05 Aircraft Design, Testing and Performance and 18Spacecraft Design, Testing and Performance.Subject Categories of the Division E. GeosciencesSelect a category to view the collection of records cited. N.A. means no abstracts in that category.42Geosciences (General)N.A.Includes general research topics related to the Earth sciences, and the specific areas ofpetrology, minerology, and general geology. For other specific topics in geosciences seecategories 42 through 48.43Earth Resources and Remote SensingN.A.Includes remote sensing of earth features, phenomena and resources by aircraft, balloon,rocket, and spacecraft; analysis or remote sensing data and imagery; development of remotesensing products; photogrammetry; and aerial photographs. For instrumentation see 35Instrumentation and Photography.44Energy Production and Conversion125Includes specific energy conversion systems, e.g., fuel cells; and solar, geothermal,windpower, and waterwave conversion systems; energy storage; and traditional powergenerators. For technologies related to nuclear energy production see 73 Nuclear Physics.For related information see also 07 Aircraft Propulsion and Power; 20 SpacecraftPropulsion and Power, and 28 Propellants and Fuels.45Environment PollutionN.A.Includes atmospheric, water, soil, noise, and thermal pollution.46Geophysics128Includes earth structure and dynamics, aeronomy; upper and lower atmosphere studies;ionospheric and magnetospheric physics; and geomagnetism. For related information see 47Meteorology and Climatology; and 93 Space Radiation.47Meteorology and ClimatologyN.A.Includes weather observation forecasting and modification.48OceanographyN.A.Includes the physical, chemical and biological aspects of oceans and seas; ocean dynamics,and marine resources. For related information see also 43 Earth Resources and RemoteSensing.xi

Subject Categories of the Division F. Life SciencesSelect a category to view the collection of records cited. N.A. means no abstracts in that category.51Life Sciences (General)N.A.Includes general research topics related to plant and animal biology (non–human); ecology;microbiology; and also the origin, development, structure, and maintenance, of animals andplants in space and related environmental conditions. For specific topics in life sciences seecategories 52 through 55.52Aerospace MedicineN.A.Includes the biological and physiological effects of atmospheric and space flight(weightlessness, space radiation, acceleration, and altitude stress) on the human being; andthe prevention of adverse effects on those environments. For psychological and behavioraleffects of aerospace environments see 53 Behavioral Science. For the effects of space onanimals and plants see 51 Life Sciences.53Behavioral SciencesN.A.Includes psychological factors; individual and group behavior; crew training and evaluation;and psychiatric research.54Man/System Technology and Life SupportN.A.Includes human factors engineering; bionics, man–machine, life support, space suits andprotective clothing. For related information see also 16 Space Transportation and 52Aerospace Medicine.55ExobiologyN.A.Includes astrobiology; planetary biology; and extraterrestrial life. For the biological effectsof aerospace environments on humans see 52 Aerospace medicine; on animals and plants see51 Life Sciences. For psychological and behavioral effects of aerospace environments see53 Behavioral Science.Subject Categories of the Division G. Mathematicaland Computer SciencesSelect a category to view the collection of records cited. N.A. means no abstracts in that category.59Mathematical and Computer Sciences (General)N.A.Includes general topics and overviews related to mathematics and computer science. Forspecific topics in these areas see categories 60 through 67.xii

60Computer Operations and Hardware129Includes hardware for computer graphics, firmware and data processing. For componentssee 33 Electronics and Electrical Engineering. For computer vision see 63 Cybernetics,Artificial Intelligence and Robotics.61Computer Programming and Software129Includes software engineering, computer programs, routines, algorithms, and specificapplications, e.g., CAD/CAM. For computer software applied to specific applications, seealso the associated category.62Computer SystemsN.A.Includes computer networks and distributed processing systems. For information systemssee 82 Documentation and Information Science. For computer systems applied to specificapplications, see the associated category.63Cybernetics, Artificial Intelligence and Robotics136Includes feedback and control theory, information theory, machine learning, and expertsystems. For related information see also 54 Man/System Technology and Life Support.64Numerical Analysis139Includes iteration, differential and difference equations, and numerical approximation.65Statistics and Probability140Includes data sampling and smoothing; Monte Carlo method; time series and analysis; andstochastic processes.66Systems Analysis and Operations Research140Includes mathematical modeling of systems; network analysis; mathematical programming;decision theory; and game theory.67Theoretical MathematicsN.A.Includes algebra, functional analysis, geometry, topology set theory, group theory and andnumber theory.Subject Categories of the Division H. PhysicsSelect a category to view the collection of records cited. N.A. means no abstracts in that category.70Physics (General)N.A.Includes general research topics related to mechanics, kinetics, magnetism, andelectrodynamics. For specific areas of physics see categories 71 through 77. For relatedinstrumentation see 35 Instrumentation and Photography; for geophysics, astrophysics orsolar physics see 46 Geophysics, 90 Astrophysics, or 92 Solar Physics.xiii

71Acoustics143Includes sound generation, transmission, and attenuation. For noise pollution see 45Environment Pollution. For aircraft noise see also 02 Aerodynamics and 07 AircraftPropulsion Propulsion and Power.72Atomic and Molecular Physics143Includes atomic and molecular structure, electron properties, and atomic and molecularspectra. For elementary particle physics see 73 Nuclear Physics.73Nuclear Physics143Includes nuclear particles; and reactor theory. For space radiation see 93 Space Radiation.For atomic and molecular physics see 72 Atomic and Molecular Physics. For elementaryparticle physics see 77 Physics of Elementary Particles and Fields. For nuclear astrophysicssee 90 Astrophysics.74OpticsN.A.Includes light phenomena and the theory of optical devices. For lasers see 36 Lasers andMasers.75Plasma Physics144Includes magnetohydrodynamics and plasma fusion. For ionospheric plasmas see 46Geophysics. For space plasmas see 90 Astrophysics.76Solid-State PhysicsN.A.Includes condensed matter physics, crystallography, and superconductivity. For relatedinformation see also 33 Electronics and Electrical Engineering and 36 Lasers and Masers.77Physics of Elementary Particles and FieldsN.A.Includes quantum mechanics; theoretical physics; and statistical mechanics. For relatedinformation see also 72 Atomic and Molecular Physics, 73 Nuclear Physics, and 25Inorganic, Organic and Physical Chemistry.Subject Categories of the Division I. Social andInformation SciencesSelect a category to view the collection of records cited. N.A. means no abstracts in that category.80Social Sciences (General)N.A.Includes general research topics related to sociology; educational programs and curricula.81Administration and ManagementIncludes management planning and research.xiv145

82Documentation and Information Science146Includes information management; information storage and retrieval technology; technicalwriting; graphic arts; and micrography. For computer documentation see 61 ComputerProgramming and Software.83Economics and Cost AnalysisN.A.Includes cost effectiveness studies.84Law, Political Science and Space PolicyN.A.Includes: aviation law; space law and policy; international law; international cooperation;and patent policy.85Technology Utilization and Surface Transportation146Includes aerospace technology transfer; urban technology; surface and mass transportation.For related information see 03 Air Transportation and Safety, 16 Space Transportation andSafety, and 44 Energy Production and Conversion. For specific technology transferapplications see also the category where the subject is treated.Subject Categories of the Division J. Space SciencesSelect a category to view the collection of records cited. N.A. means no abstracts in that category.88Space Sciences (General)N.A.Includes general research topics related to the natural space sciences. For specific topics inSpace Sciences see categories 89 through 93.89AstronomyN.A.Includes observations of celestial bodies, astronomical instruments and techniques; radio,gamma-ray, x–ray, ultraviolet, and infrared astronomy; and astrometry.90AstrophysicsN.A.Includes cosmology; celestial mechanics; space plasmas; and interstellar and interplanetarygases and dust.91Lunar and Planetary Science and ExplorationN.A.Includes planetology; selenology; meteorites; comets; and manned and unmanned planetaryand lunar flights. For spacecraft design or space stations see 18 Spacecraft Design, Testingand Performance.92Solar PhysicsN.A.Includes solar activity, solar flares, solar radiation and sunspots. For related information see93 Space Radiation.xv

93Space RadiationN.A.Includes cosmic radiation; and inner and outer Earth radiation belts. For biological effectsof radiation on plants and animals see 52 Aerospace Medicine. For theory see 73 NuclearPhysics.Subject Categories of the Division K. GeneralSelect a category to view the collection of records cited. N.A. means no abstracts in that category.99General147Includes aeronautical, astronautical, and space science related histories, biographies, andpertinent reports too broad for categorization; histories or broad overviews of NASAprograms such as Apollo, Gemini, and Mercury spacecraft, Earth Resources TechnologySatellite (ERTS), and Skylab; NASA appropriations hearings.xvi

Document Availability InformationThe mission of the NASA Scientific and Technical (STI) Program Office is to quickly, efficiently,and cost-effectively provide the NASA community with desktop access to STI produced by NASAand the world’s aerospace industry and academia. In addition, we will provide the aerospaceindustry, academia, and the taxpayer access to the intellectual scientific and technical output andachievements of NASA.Eligibility and Registration for NASA STI Products and ServicesThe NASA STI Program offers a wide variety of products and services to achieve its mission. Youraffiliation with NASA determines the level and type of services provided by the NASA STIProgram. To assure that appropriate level of services are provided, NASA STI users are requested toregister at the NASA Center for AeroSpace Information (CASI). Please contact NASA CASI in oneof the following 1-0134301-621-0390ATTN: Registration ServicesNASA Center for AeroSpace Informa

The NASA STI Program Office is operated by Langley Research Center, the lead center for NASA's scientific and technical information. The NASA STI Program Office provides access to the NASA STI Database, the largest collection of aeronautical and space science STI in the world. The Program Office is also NASA's institutional

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