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1. (WO2018080439) ACOUSTIC PANEL REPAIR WITH RETENTION OF ACOUSTIC PROPERTIES

Pub. No.:    WO/2018/080439    International Application No.:    PCT/US2016/058598
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Wed Oct 26 01:59:59 CEST 2016
IPC: B29C 73/10
B29L 31/30
Applicants: ROHR, INC.
Inventors: TEO, Chia Huat
WEE, Chong Yaw
Title: ACOUSTIC PANEL REPAIR WITH RETENTION OF ACOUSTIC PROPERTIES
Abstract:
An acoustic panel (200) for an aircraft nacelle (100) may comprise a perforated first skin (220), a second skin (230), and a core (210) sandwiched between them. A damaged portion of the perforated first skin may be removed. A fiberglass ply (510) may be coupled to the acoustic panel. A pressure differential may cause the fiberglass ply to form dimples (515) within the perforations (325) of the first skin. The fiberglass ply may be used as a template to drill holes in a replacement patch (400).