Importance

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Abstract

A detection system and method for detection of damages on at least one rotating component (10, 20, 30. . . N) of an air vehicle caused by at least one solid, comprising measuring means (S1, S2, S3 . . . Sn) for measuring vibration and/or sound of said rotating components (10, 20, 30 . . . N), to acquire the time signal of vibration and/or sound of any of said rotating components (10, 20, 30 . . . N), and processing means (PRO) for comparing said measured vibration and/or sound with a maximum value or an envelope of standard vibration and/or sound stored in a memory (EM1, EM2, . . . EMn) and warning means (WS) for issuing a warning signal when the measured vibration and/or sound exceeds said standard vibration and/or sound. The air vehicle is an airplane or a helicopter, the solid is a projectile, stones, ice-crystals or bird strike, and the measuring means are vibration sensors (S1, S2, S3 . . . Sn) and/or acoustic sensors (S1, S2, S3 . . . Sn). The reference maximum value/envelope is related to/dependent on relevant actual flight parameter values.

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First Claim