Rohr, Inc.

Thomas Sommer

Mark Alan Ramsey

David Dwain Rishel

Kristopher B Shaner

Joseph R Lundin

William McLennan

William Mclennan

An assembly is provided for an aircraft propulsion system. This assembly includes a cowl door movable between a closed position and an open position. The cowl door includes a structural panel and a mount. The structural panel includes an inner skin, an outer skin and a cellular core. The cellular core is connected to and arranged between the inner skin and the outer skin. The mount includes a base and a coupler. The base is connected to and arranged between the inner skin and the outer skin. The coupler projects out from the base.

Structural panel with integrated coupler

An assembly for forming multiple nacelle components is disclosed. In accordance with various embodiments, the assembly includes a plurality of dies arranged about a central axis. A first one of the plurality of dies has a first wall and a first cavity extending through the first wall and a second one of the plurality of dies has a second wall and a second cavity extending through the second wall. The first wall and the second wall are configured to sandwich a pair of metal blanks there between. In various embodiments, a structural ring is configured to surround the plurality of dies.

Tooling for forming nacelle components

A tool and method for bonding layers of a shell by the differential pressure bonding process. The tool and method includes a plurality of separable mandrel segments that combine to form a mandrel having a longitudinal axis, an outer surface, an upper end, and at least one substantially continuous inner surface. The inner surface has a substantially axisymmetric shape having complex curvature. In this embodiment, the tool further includes a retort configured to at least partially shroud the outer surface and upper end of the hollow body. The retort includes at least one vacuum port. The tool is configured to facilitate the compression of a plurality of layers of a multi-layer shell having complex curvature as the shell layers and an interdisposed bonding material are heated to an elevated bonding temperature.

Tool and method for bonding layers of a metallic axisymmetric structure having complex curvatures

A method for bonding a composite multi-layer shell having complex curvature by the delta-alpha high temperature bonding process uses a novel tool. The tool includes a plurality of segments that combine to form a mandrel assembly having a substantially continuous outer surface. The outer surface has a substantially axisymmetric shape including a complex curvature. When the segments are combined to form the mandrel assembly, at least one of the segments is configured to be movable in a substantially inward direction without substantial obstruction by any other segment. The segments are constructed of a first material have a first coefficient of thermal expansion that is greater than a second coefficient of thermal expansion of a second material of a composite multi-layer shell to be bonded together using the tool.

Segmented mandrel for high temperature bonding of metallic axisymmetric shells having complex curvatures

A tool for use in bonding a composite multi-layer shell having complex curvature by the delta-alpha high temperature bonding process. The tool includes a plurality of segments that combine to form a mandrel assembly having a substantially continuous outer surface. The outer surface has a substantially axisymmetric shape including a complex curvature. When the segments are combined to form the mandrel assembly, at least one of the segments is configured to be movable in a substantially inward direction without substantial obstruction by any other segment. The segments are constructed of a first material have a first coefficient of thermal expansion that is greater than a second coefficient of thermal expansion of a second material of a composite multi-layer shell to be bonded together using the tool.

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San Diego, CA, United States of America

Thomas Sommer