초록 ▼

A pressure signal synthesis method is provided to accommodate failure of a pressure sensor in a gas turbine engine. The pressure signal is synthesized from the torque produced by the engine, and further determined from the corrected speed of a gasifier rotor and power turbine for a free-turbine engi

A pressure signal synthesis method is provided to accommodate failure of a pressure sensor in a gas turbine engine. The pressure signal is synthesized from the torque produced by the engine, and further determined from the corrected speed of a gasifier rotor and power turbine for a free-turbine engine configuration. The synthesized pressure signal may include a correction factor which accounts for the deviation of the engine from a nominal characteristic. This correction factor is determined during engine operation and periodically updated to account for changes in the deviation.

대표청구항 ▼

[ What is claimed is:] [1.] An aircraft propulsion system, comprising:(a) a gas turbine engine;(b) a first sensor configured to provide a first pressure signal corresponding to a gas pressure associated with performance of said engine;(c) a second sensor configured to provide a torque signal corresp

[ What is claimed is:] [1.] An aircraft propulsion system, comprising:(a) a gas turbine engine;(b) a first sensor configured to provide a first pressure signal corresponding to a gas pressure associated with performance of said engine;(c) a second sensor configured to provide a torque signal corresponding to torque produced by said engine;(d) a controller responsive to said first pressure signal and said torque signal, said controller being configured to generate:a second pressure signal corresponding to the gas pressure, said second pressure signal being determined as a function of said torque signal,a failed sensor signal when failure of said first sensor is detected; andwherein said controller is configured to respond to said failed sensor signal to operate with said second pressure signal in place of said first pressure signal.