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In a jet engine in which the engine cowling includes an inlet cowl and an engine containment case and in which at least a portion of the interior surface of the inlet cowl is covered by an acoustic treatment material, a system for attaching the inlet cowl to the engine containment case icludes an at

In a jet engine in which the engine cowling includes an inlet cowl and an engine containment case and in which at least a portion of the interior surface of the inlet cowl is covered by an acoustic treatment material, a system for attaching the inlet cowl to the engine containment case icludes an attachment ring that is substantially U-shaped in cross section having a web and first and second legs extending orthogonally from the web. The first leg abuts an engine flange that is a part of the engine containment case. The first leg and engine flange are secured to one another by threaded fasteners. The web is attached to the acoustic treatment material by fasteners that pass through the web and the acoustic treatment material. The acoustic treatment material is effective up to the interface between the inlet cowl and the engine containment case.

대표청구항 ▼

In a gas turbine engine surrounded by a cowl, said cowl having an inlet portion of generally annular shape and including an interior skin and also having an engine containment portion, a system for removably attaching said inlet portion to said engine containment portion includes: an inlet-mounting

In a gas turbine engine surrounded by a cowl, said cowl having an inlet portion of generally annular shape and including an interior skin and also having an engine containment portion, a system for removably attaching said inlet portion to said engine containment portion includes: an inlet-mounting flange extending from said engine containment portion; an inlet-mounting ring of substantially U-shaped cross section having a web and first and second legs extending orthogonally from said web, said first leg abutting said engine-mounting flange and being removably affixed thereto, said web overlying and being removably affixed to a first surface of the interior skin of said inlet portion so as to hold said inlet portion and engine containment portion in immediate adjacency; and sound-absorbing means affixed to a second surface of said interior skin in an area immediately adjacent said engine containment portion.