Patent ID: 8302733

Claim:
A method for forming an aircraft engine intake acoustic absorber for an engine, comprising: folding a one-piece flat semi-finished product along zigzag fold lines arranged cross-wise to each other to form 3-dimensional honeycomb structures; and forming a bent curved core by bending the flat semi-finished product with overlapping 3-dimensional honeycomb structures such that the 3-dimensional honeycomb structures of one end of the bent curved core overlap and interlock with the 3-dimensional honeycomb structures of another end of the bent curved core, wherein each 3-dimensional honeycomb structure is formed by folding the one-piece flat semi-finished product to form walls defining each 3-dimensional honeycomb structure, and wherein the bent curved core assumes the form of the aircraft engine intake acoustic absorber while avoiding a saddle effect and is structured and arranged to absorb aircraft engine noise.