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Vibration monitoring system for an aircraft engine

  • US 4,213,114 A
  • Filed: 03/07/1979
  • Issued: 07/15/1980
  • Est. Priority Date: 03/07/1979
  • Status: Expired due to Term
First Claim
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1. A vibration monitoring system for an aircraft engine, comprising at least two measuring feelers responsive to vibration, such feelers having similar characteristics and being exposed to the same vibration, means for producing measuring signals corresponding to the output at each of said feelers, comparator means for comparing said measuring signals and logic means interconnected with indicating means for detecting and indicating a normal condition when said measuring signals are substantially equal, a defect condition when said measuring signals differ from each other and an alarm condition when both said measuring signals exceed a safety limit.

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