Dynamic data analysis

The requirements for basic dynamic transducers, objectives in their use, and simple logistics of the engine as well as information elements of a gas turbine development process are introduced. Editing techniques are presented by complementary analysis methods through which pre-edited data may be converted selectively into engineering information in a compact and simple form. Four case histories are used to illustrate the techniques, with the first two recording respectively: frequency information derived from several strain gauges during uniform engine acceleration of a blade standard known to fail, and comparative 'g' amplitude data from an accessory gear-box having a major accessory mounted at extremes of an acceptable clamp tightness specification. Cases three and four illustrate respectively: distribution of stress, and an engine mounted accessory used to control the engine throttle.