Method for manufacturing a cellular core for an acoustic panel

A method for manufacturing an acoustic panel, the method comprising:

• manufacturing a cellular core having a front end surface and a rear end surface defining a thickness direction, the cellular core further comprising peripheral longitudinal partition walls disposed between the front end surface and the rear end surface and extending in a longitudinal direction of the cellular core, a plurality of recesses recessed from the front end surface and being open at the front end surface, peripheral transverse partition walls extending in a transverse direction vertical to the longitudinal direction and connected to the peripheral longitudinal partition walls, wherein the cellular core is integrally formed in one-piece;
• and
• attaching a front acoustic skin to the front end surface of the cellular core to close the plurality of recesses at the front end surface in the thickness direction such that some of the recesses form a plurality of acoustic cells and a remainder of the recesses form a plurality of deicing channels, and such that the plurality of acoustic cells and the de-icing channels extend in the longitudinal direction,
• wherein each deicing channel is interposed between two successive acoustic cells, and the plurality of deicing channels being adapted to channel a deicing fluid.