| 摘要 |
The invention relates to a method of manufacturing a composite acoustic panel employed in an inlet passage of a gas turbine engine. The acoustic panel comprises a permeable face-layer, an impermeable backing sheet and a sound absorbing layer 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. |
