| 摘要 |
The device ( 1 ) comprises a set ( 2 ) of information sources, means ( 3 ) for determining, with the aid of information emanating from said set ( 2 ), a current bending moment, means ( 5 ) for determining, with the aid of information emanating from said set ( 2 ), a current twisting moment, means ( 7 ) for carrying out a comparison by comparing the pair formed by the current bending moment and the current twisting moment with a safety envelope representing a chart formed in a plane on the basis of pairs of values of bending and twisting moments and defined so that, for any pair which lies outside the safety envelope, there exists a risk of appearance of permanent deformations on the fin, and means ( 10 ) for determining whether a structural inspection of the fin has to be performed, at least on the basis of the result of said comparison.
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