Method for detecting ice ingestion in a gas turbine engine

Details Method for detecting ice ingestion in a gas turbine engine Method for detecting ice ingestion in a gas turbine engine

2011-03-01

2011-03-01

Cuff, Michael (Department: 3741)

Power plants

Combustion products used as motive fluid

With safety device

C060S772000, C073S112010

Reexamination Certificate

active

07895818

ABSTRACT:
A method of detecting an ice shedding event in a gas turbine engine, the engine having a rotor comprising a compressor drivingly connected via a shaft to a turbine; the method for detecting an ice shedding event comprising the steps of measuring the temperature at regular intervals and where a temperature drop of at least 20 degrees per second is recorded, producing a signal indicative of an ice shedding event and sending the signal to an indicator device. Advantageously, the engine may then be inspected for damage associated to an ice impact rather than other foreign object ingestion event or fuel flow irregularity. Alternatively, instead of temperature, pressure may be measured and a pressure drop of at least 20 kPa per second is indicative of an ice shedding event.

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