Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle diagnosis or maintenance indication
Reexamination Certificate
2005-06-21
2005-06-21
Black, Thomas G. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle diagnosis or maintenance indication
C701S034000, C701S003000, C416S037000, C416S038000, C416S061000, C073S455000, C073S462000
Reexamination Certificate
active
06909948
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.
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Mollmann Daniel E.
ven der Merwe Gert
Andes William Scott
Black Thomas G.
Broadhead Brian J
General Electric Company
Haushalter Barbara Joan
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