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Acronyms & Abbreviations GRC Glenn Research Center ISS International Space Station

Brief Description of the Microgravity Analysis Software System (MASS) Alan Chmiel Ken Hrovat Brad Humphreys. Acronyms & Abbreviations GRC Glenn Research Center ISS International Space Station SAMS Space Acceleration Measurement System

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Acronyms & Abbreviations GRC Glenn Research Center ISS International Space Station

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  1. Brief Description of theMicrogravity Analysis Software System (MASS)Alan ChmielKen HrovatBrad Humphreys Acronyms & Abbreviations GRC Glenn Research Center ISS International Space Station SAMS Space Acceleration Measurement System MAMS Microgravity Acceleration Measurement System MASS Microgravity Analysis Software System RF Refrigerator/Freezer TSC Telescience Support Center

  2. Archive File Pair Example Each archive file pair consists of data and header parts: • Data part stored in (efficient) binary format • Header part stored in human-readable text format • Routine that writes these archive files can be configured for “power of two” data length or other considerations

  3. Analysis Example Qualify Disturbances

  4. Analysis Example Quantify Disturbances Shuttle Primary Reaction Control System (PRCS) Thruster Firing ~ 50 mg

  5. Spectrogram boundaries & structure in time and frequency 1 2 12 hours Analysis Example over 2 hours! Why is RF # 2 working so much?

  6. Principal Component Spectral Analysis: summarize acceleration spectrum LSLE refrigerator compressors Antenna dither 2 Vehicle structural modes 1 WAKE SLEEP Centrifuge Exercise Analysis Example span > 15 days

  7. Screenshot of Off-Line Analysis Tool

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