Abstract: This present invention relates to a monitoring device used to reduce touching of a wearer's head or neck. The monitoring device has an accelerometer that detects motion of the hand to the head and/or neck. The monitoring device can reduce the frequency of touching by issuing alerts to the wearer.

Abstract: A turbine housing section includes a radially inner case centered on a first axis, and a radially outer case spaced radially outwardly of the inner case, and centered on a second axis. The first and second axes are offset relative to each other. A plurality of tie rods include a threaded nut received on a tie rod, with the plurality of tie rods connecting the inner and outer cases. The plurality of tie rods are spaced circumferentially about both of the first and second axes, and extend for distinct lengths between the inner and outer cases such that the inner and outer cases are held at a position wherein the first and second axes are offset.

Abstract: An example diffuser assembly includes a diffuser case, an annular ring, and a retaining tab that is mounted to the annular ring and has an end that engages an inner wall of the diffuser case. The engagement between the second end and the inner wall locks the retaining tab and limits movement of the annular ring along a central longitudinal axis of the diffuser case. Another example diffuser assembly includes a diffuser case, an annular ring, and a snap ring. The snap ring is situated in an annular groove of an inner wall of the diffuser case, and restricts movement of the annular ring along a central longitudinal axis of the diffuser case. A retaining tab is affixed to either the annular ring or the diffuser case, and has an end retaining the annular ring in the annular groove.

Abstract: A disclosed gas turbine engine includes a compressor section, a combustor section, a first turbine section and a second turbine section. An outer case structure for the gas turbine engine includes a single-piece case structure with a turbine case portion and a transition case portion. The transition case portion is integrally formed with the turbine case portion as a single part module. A combustor case houses the combustor and an aft turbine case supports the low pressure turbine. The outer case includes a forward end attachable to the combustor case and an aft end attachable to the aft turbine.

Abstract: A retractable exhaust liner segment according to an example of the present disclosure includes, among other things, at least one liner segment extending between a forward end and an aft end. The forward end of the at least one liner segment is configured to overlap an aft end of an engine structure and the aft end of the at least one liner segment is configured to overlap a forward end of an exhaust liner when in an assembled position. The at least one liner is configured such that a gap exists between the at least one liner segment and one of the engine structure and the exhaust liner when the at least one liner segment is moved along an axis in a first direction to a disassembled position. The gap closes as the at least one liner segment is moved along the axis in a second, different direction to the assembled position.

Abstract: A tie rod includes a gusset which extends between a rod and a base.

Abstract: The present disclosure relates to plug assemblies within a gas turbine engine. In one embodiment, a plug assembly includes a boss which includes a shaft and a collar, a retaining element including at least two prongs, and a plug including a shank and at least one retaining feature. The at least two prongs of the retaining element are configured to retain the plug to the boss.

Abstract: An example diffuser assembly includes a diffuser case, an annular ring, and a retaining tab that is mounted to the annular ring and has an end that engages an inner wall of the diffuser case. The engagement between the second end and the inner wall locks the retaining tab and limits movement of the annular ring along a central longitudinal axis of the diffuser case. Another example diffuser assembly includes a diffuser case, an annular ring, and a snap ring. The snap ring is situated in an annular groove of an inner wall of the diffuser case, and restricts movement of the annular ring along a central longitudinal axis of the diffuser case. A retaining tab is affixed to either the annular ring or the diffuser case, and has an end retaining the annular ring in the annular groove.

Abstract: A method of making a tool includes creating a computer rile defining the tool in layers and building the tool using an additive manufacturing process that builds the tool on a layer-by-layer basis. The tool includes at least one of the following features: a substantially square dogleg inner end corner, a substantially completely cylindrical dogleg surface, an angled dogleg inlet, and an integral mounting point at or near one end of the body.

Abstract: A proximity switch (20, 20A) that snaps quickly and locks between first and second positions of movable electrical contacts (32). A magnet (42) moves a first shaft (26) toward a magnetic target (62) when the target is proximate a sensor end (43) of the switch housing (22). A spring (44) urges the first shaft (26) away from the sensor end. Movement of the first shaft causes a second spring (64) to urge a second shaft (28) in the direction of the first shaft. Next the second shaft is released (52) to move in the direction urged by the second spring. The switch may be adapted to a client cable pin configuration via an adapter plug (80) in the housing with a flexible interconnection circuit (82) folded in a chamber between the adapter plug and leads from fixed electrical contacts (38) of the switch.

Abstract: A flexible panel assembly for a gas turbine engine selectively exhibits a range of positions to regulate exhaust of the engine.

Abstract: A retractable exhaust liner segment according to an example of the present disclosure includes, among other things, at least one liner segment extending between a forward end and an aft end. The forward end of the at least one liner segment is configured to overlap an aft end of an engine structure and the aft end of the at least one liner segment is configured to overlap a forward end of an exhaust liner when in an assembled position. The at least one liner is configured such that a gap exists between the at least one liner segment and one of the engine structure and the exhaust liner when the at least one liner segment is moved along an axis in a first direction to a disassembled position. The gap closes as the at least one liner segment is moved along the axis in a second, different direction to the assembled position.

Abstract: The present disclosure relates to plug assemblies within a gas turbine engine. In one embodiment, a plug assembly includes a boss which includes a shaft and a collar, a retaining element including at least two prongs, and a plug including a shank and at least one retaining feature. The at least two prongs of the retaining element are configured to retain the plug to the boss.

Abstract: A turbine housing section includes a radially inner case centered on a first axis, and a radially outer case spaced radially outwardly of the inner case, and centered on a second axis. The first and second axes are offset relative to each other. A plurality of tie rods include a threaded nut received on a tie rod, with the plurality of tie rods connecting the inner and outer cases.

Abstract: A retractable exhaust liner segment according to an exemplary aspect of the present disclosure includes, among other things, a first retractable exhaust liner segment which defines a first flange and a second retractable exhaust liner segment which defines a second flange. A fastener assembly received by the first flange and the second flange is configured to mount the first retractable exhaust liner segment and the second retractable exhaust liner segment. A forward end of the retractable exhaust liner segment overlaps an aft end of an engine structure and an aft end of the retractable exhaust liner segment overlaps a forward end of an exhaust liner in an assembled position.

Abstract: A disclosed gas turbine engine includes a compressor section, a combustor section, a first turbine section and a second turbine section. An outer case structure for the gas turbine engine includes a single-piece case structure with a turbine case portion and a transition case portion. The transition case portion is integrally formed with the turbine case portion as a single part module. A combustor case houses the combustor and an aft turbine case supports the low pressure turbine. The outer case includes a forward end attachable to the combustor case and an aft end attachable to the aft turbine.

Abstract: Introduced is a technology for managing planning items in a calendar user interface based on one or more contingency parameters. In at least some embodiments, the technology involves receiving one or more planning items (e.g., task, appointment, and/or calendar note) and contingency parameters defining each item, and generating different organized presentations of the items based on the contingency parameters. Based on the parameters, the planning items are filtered and/or arranged chronologically into the different organized presentations to include at least a plan view and an act view. The plan view presents all items (e.g., active items that can be acted upon and inactive items that are planned, but not yet to be acted upon), and can be useful, e.g., for organizing short and long-term goals. The act view presents a filtered list of items (e.g., active items) that can be useful, e.g., to present only actionable items.

Abstract: An engine has a blade, a casing surrounding the blade, an seal ring, and a passive system for connecting the seal ring to the casing and for accommodating thermal expansion of the seal ring relative to the casing so as to maintain blade tip clearance control. The passive system may include at least one, metallic Z-band extending between the casing and the seal ring.