Method and apparatus for turbine engine dynamic characterization

摘要

A method and apparatus for conducting dynamic characterization of a gas turbine engine which involves generating exciting pressure pulses and measuring responses in the engine, and, in one aspect, then analyzing the measured response for engine dynamic characteristics. An exciting air flow pipe (38) connected to the engine to allow an air flow to be injected into or bled from the engine is selectively blocked by a pulsing wheel (44) driven by a motor (48).