An environmental vibration recorder (EVR) was developed to obtain vibration data over a long period of time while the ship operates in various sea-states. The EVR reduces the analysis time by recording only the peak level of vibration data at selected frequencies instead of recording the complete analog signal as the earlier model did. Each transducer is sampled for the maximum value for five minutes, and the output is recorded in binary code on paper tape. The transducer number, time ships heading, sea-state, sea angle of attack, shaft rpm and wind velocity are recorded with the vibration data.

  • Corporate Authors:

    Naval Research Laboratory

    Stennis Space Center, MS  United States  39529-5004
  • Authors:
    • Schauer, R E
    • Foster, W P
  • Publication Date: 1969-12

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00016661
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: 40, part 7
  • Files: TRIS
  • Created Date: Aug 20 1971 12:00AM