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Engine monitoring apparatus

  • US 4,891,971 A
  • Filed: 12/21/1988
  • Issued: 01/09/1990
  • Est. Priority Date: 12/23/1987
  • Status: Expired due to Fees
First Claim
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1. Engine monitoring apparatus for detecting abnormal start conditions of a gas-turbine engine comprising:

  • means for deriving a first signal indicative of spool speed;

    means for deriving a second signal indicative of engine temperature ;

    processing means arranged to receive the first and second signals, said processing means monitoring the dynamic relationship between the first and second signals such as to determine when the said relationship is indicative of an abnormal start condition ; and

    visual display means which signals in real time a visual indication of such an abnormal start condition.

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