A flange assembly includes a primary flange and a secondary flange positioned adjacent the primary flange. The primary flange includes a primary flange body defining a primary bolt aperture. The secondary flange includes a secondary flange body defining a secondary bolt aperture. The flange assembly further includes a bolt. The bolt includes a bolt body extending between a head end and a distal end along a bolt axis. The bolt body includes an annular surface disposed about the bolt axis. The bolt body further includes an annular groove formed in the annular surface and disposed about the bolt axis. The bolt body is positioned within the primary bolt aperture and the secondary bolt aperture. The flange assembly further includes a clip attached to the bolt body within the annular groove. The clip is positioned between the between the primary flange and the secondary flange.

A flange assembly includes a primary flange and a secondary flange positioned adjacent the primary flange. The primary flange includes a primary flange body defining a primary bolt aperture. The secondary flange includes a secondary flange body defining a secondary bolt aperture. The flange assembly further includes a bolt. The bolt includes a bolt body extending between a head end and a distal end along a bolt axis. The bolt body includes an annular surface disposed about the bolt axis. The bolt body further includes an annular groove formed in the annular surface and disposed about the bolt axis. The bolt body is positioned within the primary bolt aperture and the secondary bolt aperture. The flange assembly further includes a clip attached to the bolt body within the annular groove. The clip is positioned between the between the primary flange and the secondary flange.

An assembly is provided for a gas turbine engine. This gas turbine engine assembly includes a split case structure. The split case structure includes a first wall, a second wall, a first case segment and a second case segment. The first wall extends axially along and circumferentially about an axial centerline. The second wall extends axially along and circumferentially about the axial centerline. The second wall is radially outboard of and axially overlaps the first wall. The first case segment is configured to form a first portion of the first wall and a first portion of the second wall. The second case segment is configured to form a second portion of the first wall and a second portion of the second wall. The second case segment is circumferentially adjacent and attached to the first case segment at a joint.

A gas turbine engine includes a casing including a plurality of interconnected casing segments defining an outer surface of the casing. One of the casing segments is a gearbox segment enclosing a gearbox and having a gearbox flange extending radially outwardly from the outer surface of the casing. The engine includes a bearing housing enclosing at least one bearing and having an annular body with an inner segment disposed within the casing. The annular body having an extension segment extending radially outwardly from the inner segment to a bearing housing flange disposed radially-outwardly of the outer surface of the casing. The bearing housing flange is engageable with the gearbox flange to removably mount the gearbox segment to the bearing housing.

An engine pod for a gas turbine engine which includes a pod wall having an inside and an outside. The pod wall includes a fixed downstream portion and a displaceable upstream portion which is displaceable in the axial direction between a first upstream position and a second downstream position. At its downstream end facing the fixed portion, the upstream portion forms a radially outer rear edge and axially spaced therefrom a radially inner rear edge, with a recess in between. It is provided that adjacent to the recess, an air-permeable structure is formed in the upstream portion which is intended and configured, in the first upstream position of the displaceable portion, to conduct air flowing in the region of the recess to the inside of the displaceable portion. According to a further aspect of the invention, the axial position of the radially inner rear edge varies in the circumferential direction.

A gas turbine engine includes a casing including a plurality of interconnected casing segments defining an outer surface of the casing. One of the casing segments is a gearbox segment enclosing a gearbox and having a gearbox flange extending radially outwardly from the outer surface of the casing. The engine includes a bearing housing enclosing at least one bearing and having an annular body with an inner segment disposed within the casing. The annular body having an extension segment extending radially outwardly from the inner segment to a bearing housing flange disposed radially-outwardly of the outer surface of the casing. The bearing housing flange is engageable with the gearbox flange to removably mount the gearbox segment to the bearing housing.

An air-sealing device intended to be inserted between an aircraft dual-flow turbine engine casing element and a nacelle element, the sealing device including an attachment tab at the end of which is located a sealing portion having an outer surface intended to be contacted by the casing element and the nacelle element, and an inner surface defining a cavity. The inner surface defines at least one protuberance extending inside the cavity.

A turbine housing for a two-wheel air cycle machine includes a first side of the turbine housing, a second side of the turbine housing, a central axis, an outer housing portion, an inner housing portion, a plurality of struts between the inner housing portion and the outer housing portion and a plurality of cooling slots between the plurality of supports. The outer housing portion includes an inner surface, an outer surface, a cooling inlet extending from the outer surface of the outer housing portion and a cooling outlet opposite the cooling inlet and extending from the outer surface of the outer housing portion. The inner housing portion includes a thrust bearing support surface substantially parallel to the second side of the turbine housing and a journal bearing bore extending between the first side of the turbine housing and the thrust bearing support surface.

A sealing mechanism including a first seal member, a second seal member arranged so as to face the first seal member, and a deformed nucleus member arranged in a space formed at least partially between the first seal member and the second seal member, and becoming a nucleus of deformation in the sealing mechanism. The deformed nucleus member is configured by a combination of rod-like members and plate-like members respectively formed from a plurality of materials having different linear expansion coefficients, and is fixed to each of the first seal member and the seal member. The deformed nucleus member contracts in at least one direction on a cross-section of the seal groove, along with an increase in temperature of the deformed nucleus member. The first seal member and the second seal member respectively have abutment surfaces abutting on an inner surface of the seal groove or the facing surfaces.

A modular flooring system comprises a modular floor surface and a plurality of stackable, three-dimensional modular interior design components (MIDCs). The modular door surface can comprise an array of discrete, raised, low-profile, receiving panels that can be rectangular in shape. MIDCs can be securely and interchangeably placed on any group of one or more adjacent unoccupied receiving panel and they east also be stackable, such that various different floor layouts can be created. Bach of the MIDCs may comprise a lower surface recess that fits over a group of one or more adjacent raised receiving panels. A first MIDC may have an raised lip on a top surface such that the lower surface recess of a second MIDC fits over, separately and interchangeably, one (or more) of the raised receiving panels and the raised lip on the top surface of the first MIDC. The MIDCs can comprise a storage cube MIDC (square or rectangular cube) as well as specialized MIDCs, such as a commode MIDC, a sink MIDC, a cooler MIDC, and a tile MIDC, etc. In such a manner, a user of the modular flooring system could locate the MIDCs on the floor surface and/or stack them to configure a preferred layout. Moreover, the MIDCs could be rearranged later to design a new layout.