System for monitoring validity of temperature measurement chain of exhaust gases of jet engine of aircraft, has computer analyzing results of statistical test on abnormality detection indicator to assess validity of chain

摘要

The system has an acquisition unit (23) collecting a set of temporal measurements including exhaust gas temperature (T495) and air inlet temperature (T12) of a jet engine. A computer (25) calculates reduced temperature (T495r) of exhaust gas corresponding to a chain of measurements, and calculates an abnormality detection indicator (T495cr) according to the reduced temperature of exhaust gas. The computer performs a statistical test on abnormality detection indicator, and analyzes the results of the statistical test to assess the validity of the chain of measurement. An independent claim is also included for a method for monitoring validity of temperature measurement chain of exhaust gases of a jet engine of an aircraft.