This article describes the various techniques used on helicopters for engine and gearbox surveillance, considers main and tail rotor balancing and tracking, and the very latest method of vibration signature analysis and monitoring. Chronologically, the first health monitoring techniques were filter examination, magnetic chip detectors and, later, Spectrometric Oil Analysis Programme or SOAP. These practices were pioneered in the Armed Services by forming Early Failure Detection Centers (EFDCs). Improved filter examination now uses powerful stereoscopes and the use of scanning electron microscopes is planned.

  • Corporate Authors:

    Trade and Technical Press, Limited

    Crown House
    Morden, Surrey SM4 5EW,   England 
  • Authors:
    • Trigg, N E
  • Publication Date: 1978-3

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00193343
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: May 11 1979 12:00AM