The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 23, 2001
Filed:
Dec. 03, 1998
Applicant:
Inventors:
Elio Zoppitelli, Velaux, FR;
Alain Struzik, Aix-en-Provence, FR;
Assignee:
Eurocopter, Marignane Cedex, FR;
Primary Examiner:
Int. Cl.
CPC ...
G01H 1/00 ;
U.S. Cl.
CPC ...
G01H 1/00 ;
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.