Method and device for determining the state of a vibrating structure of a rotary wing aircraft
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United States of America Patent
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-
Jan 23, 2001
Grant Date -
N/A
app pub date -
Dec 3, 1998
filing date -
Dec 4, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to a method and to a device for determining the state of a vibrating structure of a rotary wing aircraft, while the latter is operating. The device includes sensors arranged on the vibrating structure and capable of measuring the values of vibrational parameters, and a calculation unit receiving the values measured by the sensors and calculating, from these and from estimated values of the vibrational parameters, a correlation coefficient, comparing the latter with a predefined range of values and deducing from this comparison the state of the vibrating structure.
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