Patent ID: 8028797
Filing Date: 2011-10-04
Classification: B64D,F02C,F02K,F05D,Y02T,Y10T

Abstract:
1. A method of maximizing the available acoustic area of an engine nacelle inner barrel having an acoustic cellular core, a perforated inner skin, an outer skin, and at least one longitudinal seam extending between opposing edges of the acoustic cellular core, the method comprising: (a) providing an acoustic cellular core having a first cut edge and a second cut edge; (b) covering the first cut edge of the cellular core such that substantially all of the cells along the first cut edge remain substantially unobstructed; (c) covering the second cut edge of the cellular core such that substantially all of the cells along the second cut edge remain substantially unobstructed; and (d) splicing the first and second edges together by attaching at least one plate to the outer skin across the seam with at least one blind fastener on each side of the seam, wherein: covering the first and second cut edges of the cellular core includes adhesively bonding at least one elongated strip so as to cover at least a portion of a plurality of openings in cell walls of partial cells along the cut edges; and the at least one elongated strip is separate from the inner and outer skins.