A nacelle structure (10) surrounding a fan, the structure comprising an air inlet (100) having an inside surface (100A) defining an air feed channel; and at least one ring (22) arranged in the air inlet and selectively movable between a deployed position in which the ring is moved radially inwards from the inside surface to provide an obstacle to shock waves coming from the fan, and a retracted position in which the ring is moved radially outwards from the deployed position so as to become flush with the inside surface and thus reconstitute the air feed channel.
MANCHE D'ENTRÉE D'AIR ACOUSTIQUEMENT OPTIMISÉE
ACOUSTICALLY OPTIMIZED AIR INLET SLEEVE
AKUSTISCH OPTIMIERTE LUFTEINLASSHÜLSE
2023-05-03
Patent
Electronic Resource
French
BERCEAU POUR TURBOPROPULSEUR A MANCHE D'ENTRÉE D'AIR INTÉGRÉE
European Patent Office | 2018
|BERCEAU POUR TURBOPROPULSEUR A MANCHE D'ENTREE D'AIR INTEGREE
European Patent Office | 2018
|