Abstract: A system and method are provided for allowing simplified access to the raw vibration data. The signal conditioner, even if mounted on the engine or the engine pylon, digitizes the input signals and can analyze and store a finite amount of raw data. The raw signals are digitized at a high rate of speed, and the digitized values are stored. The stored values can be retrieved after flight. This aircraft vibration processor and recording system allows easy access to the raw vibration waveform, even in configurations where the processor is located on the engine or the engine pylon.

Abstract: The present invention provides a system and method for using the external accelerometer in an aircraft engine configuration as a backup accelerometer, in the event the internally located production accelerometer fails. The sensor location of the external accelerometer has an acceptable sensitivity to fan imbalance, similar to the location of the former alternate accelerometer. The signal from this external accelerometer is duplicated using software in the signal conditioning hardware, creating the second, alternate signal. As an alternative embodiment, the signal may be duplicated by simply teeing or branching the original signal, using hardware rather than software.

Abstract: A system and method are provided for allowing simplified access to the raw vibration data. The signal conditioner, even if mounted on the engine or the engine pylon, digitizes the input signals and can analyze and store a finite amount of raw data. The raw signals are digitized at a high rate of speed, and the digitized values are stored. The stored values can be retrieved after flight. This aircraft vibration processor and recording system allows easy access to the raw vibration waveform, even in configurations where the processor is located on the engine or the engine pylon.

Abstract: The present invention provides a system and method for using the external accelerometer in an aircraft engine configuration as a backup accelerometer, in the event the internally located production accelerometer fails. The sensor location of the external accelerometer has an acceptable sensitivity to fan imbalance, similar to the location of the former alternate accelerometer. The signal from this external accelerometer is duplicated using software in the signal conditioning hardware, creating the second, alternate signal. As an alternative embodiment, the signal may be duplicated by simply teeing or branching the original signal, using hardware rather than software.