The invention relates to a method of manufacturing a composite acoustic panel employed in an inlet passage of a gas turbine engine (1). The acoustic panel comprises a permeable face-layer (8), an impermeable backing sheet (9) and a sound absorbing layer (10) disposed therebetween. The method comprises a double polymerisation process for the face-layer and the remainder of the acoustic panel and finally a perforation step to perforate the face-layer according to a pre-determined perforation distribution (11.1, 11.2, 11.3, 11.4, 11.5).
SEAMLESS ACOUSTIC LINER
SAUMLOSE SCHALLDÄMPFENDE AUSKLEIDUNG
REVÊTEMENT ACOUSTIQUE SANS SOUDURE
03.05.2017
Patent
Elektronische Ressource
Englisch
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