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  • 1
    facet.materialart.
    Unknown
    Improved burst disk/cutter assembly (1970)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Burst disk/cutter, prewelded before assembly, eliminates external leakage into a vacuum annulus and provides a means for more accurate burst-pressure prediction. Two reverse buckling type configurations are described and test results are given.
    Keywords: MACHINERY
    Type: KSC-10516
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Unknown
    Monitoring Bearing Vibrations For Signs Of Damage (1991)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Real-time spectral analysis of vibrations being developed for use in monitoring conditions of critical bearings in rotating machinery. Underlying concept simple and fairly well established: appearance and growth of vibrations at frequencies associated with rotations of various parts of bearing system indicate wear, damage, and imperfections of manufacture. Frequencies include fundamental and harmonics of frequency of rotation of ball cage, frequency of passage of balls, and frequency of rotation of shaft.
    Keywords: MACHINERY
    Type: MFS-29734 , NASA Tech Briefs (ISSN 0145-319X); 15; 12; P. 78
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Unknown
    Monitoring Engine Vibrations And Spectrum Of Exhaust (1991)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Real-time computation of intensities of peaks in visible-light emission spectrum of exhaust combined with real-time spectrum analysis of vibrations into developmental monitoring technique providing up-to-the-second information on conditions of critical bearings in engine. Conceived to monitor conditions of bearings in turbopump suppling oxygen to Space Shuttle main engine, based on observations that both vibrations in bearings and intensities of visible light emitted at specific wavelengths by exhaust plume of engine indicate wear and incipient failure of bearings. Applicable to monitoring "health" of other machinery via spectra of vibrations and electromagnetic emissions from exhausts. Concept related to one described in "Monitoring Bearing Vibrations For Signs Of Damage", (MFS-29734).
    Keywords: MACHINERY
    Type: MFS-29733 , NASA Tech Briefs (ISSN 0145-319X); 15; 12; P. 79
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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