General Electric Company

Emc Corporation

Hewlett-packard Development Company, L.p.

Emc IP Holding Company LLC

Manoj Kumar Jain

Nicholas Joseph Kray

Nagamohan Govinahalli Prabhakar

Nitesh Jain

Apostolos Pavlos Karafillis

Scott Roger Finn

Thomas Chadwick Waldman

Mojibur Rahman

Sanjay Kumar

Sumit Kumar

Andreas Mastorakis

Girish Narayana Rao Nadger

Vivekananda Venkateswaran

Lokesh Chenta

Siju Viswanath Koodali Edathil

Kottolli Vishweshwara Arun

A propulsion system including a casing surrounding a fan rotor assembly is provided. An example casing includes an outer layer material, an inner layer material including first openings extended partially through the inner layer material along a radial direction of a first side of the inner layer material, and second openings extended partially through the inner layer material along the radial direction of a second side of the inner layer material opposite the first side, and a spring member coupled to the outer layer material and the inner layer material.

Containment case active clearance control structure

Walls of gas turbine engine casings, fan cases, and methods for forming walls, e.g., fan case walls, are provided. For example, a wall comprises a plurality of composite plies arranged in a ply layup. The wall is annular and circumferentially segmented into a plurality of regions that include at least one first region and at least one second region. The ply layup in the first and second regions is different such that the ply layup is non-axisymmetric. An exemplary fan case comprises an annular inner shell, a filler layer, an annular back sheet, and an annular outer layer. The back sheet is circumferentially segmented into a plurality of regions, including at least one first region and at least one second region, and comprises a plurality of composite plies arranged in a ply layup that is different in the first and second regions such that the ply layup is non-axisymmetric.

Casing having a non-axisymmetric composite wall

A platform for use between adjacent propulsion rotor airfoils joined to a rotor disk to provide an inner flowpath boundary includes: an axially extending I-beam supporting a radially outer skin having a flowpath surface; the I-beam including an inner I-flange disposed at an inner edge of an axially extending I-web, and an outer I-flange disposed at an outer edge of the I-web; the I-beam including a laterally-extending forward end flange at a forward end of the I-web, and a laterally-extending aft end flange at an aft end of the I-web; and the radially outer skin disposed on top of and joined to the radially outer I-flange such that the forward end flange and the aft end flange abut the outer skin.

Platform apparatus for propulsion rotor

A softwall containment system for a machine includes an inner wall circumscribing a bladed rotatable member of the machine and extending from a forward end to an aft end. The softwall containment system also includes an outer wall circumscribing the inner wall and extending from a forward end to an aft end. The outer wall is spaced radially outwardly from the inner wall. The outer wall extends axially between a first joint coupling the forward end of the inner wall to the forward end of the outer wall and a second joint coupling the aft end of the inner wall to the aft end of the outer wall. The softwall containment system also includes an anti-ballistic material wrap covering the outer wall, the anti-ballistic material wrap including at least one of a first extension extending forward of the first joint and a second extension extending aft of the second joint.

Softwall containment systems

A bolted joint apparatus includes: a first component including a first row of first bolt holes extending therethrough; a second component including a second row of second bolt holes extending therethrough wherein the second bolt holes are aligned coaxially with the first bolt holes, a plurality of fasteners, each of fasteners disposed through aligned pairs of the first and second bolt holes to couple together the first and second components, each of the fasteners including a shank; and crushable spacers disposed around the shanks of the fasteners, the crushable spacers clamped in compression between the fasteners and one of the components, wherein each of the crushable spacers has a tubular body interconnecting first and second enlarged ends, the tubular body being defined by a peripheral wall which incorporates at least one weakening feature.

Crushable spacer and bolted joint for a gas turbine engine

A propulsion system including a casing surrounding a fan rotor assembly is provided. The casing includes an outer layer material defining a first coefficient of thermal expansion (CTE) and an inner layer material. The casing further includes a spring member disposed between the outer layer material and the inner layer material coupling the outer layer material and the inner layer material. The spring member is coupled to each of the outer layer material and the inner layer material within a flow passage defined between the outer layer material and the inner layer material. The spring member defines a second CTE greater than the first CTE.

A containment structure for surrounding a rotatable machine includes a double-walled inner shell having a forward end, an aft end, and a substantially cylindrical body extending therebetween. The inner shell includes an inner wall at least partially surrounding a bladed portion of the bladed rotor, and an outer portion that branches radially outward from the inner wall. The containment structure also includes a substantially cylindrical back sheet coupled to the outer portion and disposed radially outward of the inner wall.

Airfoil containment structure including a notched and tapered inner shell

Example embodiments of the present invention provide a method, an apparatus, and a computer program product for brokering establishment of a trusted relationship between a first domain and a second domain. The method includes receiving, from a first domain, a request to establish a trusted relationship with a second domain and brokering establishment of the trusted relationship between the first domain and the second. Other example embodiments include brokering authenticated access for a client in the first domain to a resource in the second domain according to the established trusted relationship.

Method and apparatus for federated single sign on using authentication broker

A backsheet for use in a turbine engine fan case includes a first portion including a first portion first end and an opposing first portion second end. The first portion is tapered between the first portion first end and the first portion second end. The backsheet also includes a second portion coupled to the first portion. The second portion includes a second portion first end and an opposing second portion second end. The second portion defines a constant thickness between the second portion first end and the second portion second end.

Tapered composite backsheet for use in a turbine engine containment assembly

A system and method are provided to model a network path with performance characterization for individual path segments of the network path and correlate the faults and performance issues to identify the factors that are causing network path performance degradation. The system described herein provides for codebook correlation technology to identify the root cause of network path performance degradation. In an embodiment, an algorithm is provided to model the network path with performance characterization and analysis. The performance of a network path is determined by performance characteristics of individual hops along the network path. The path performance is then characterized with weighted attributes indicative of performance over individual hops along the network path. The individual hops along the network path are modeled with weighted attributes indicative of performance. The performance symptoms may be aggregated to determine path performance using codebook correlation to perform a causal analysis.

Path analytics using codebook correlation

Example embodiments of the present invention provide a method and an apparatus for problem analysis using a causal map. The method includes building a problem domain corresponding to a datacenter management problem and building a causal map corresponding to the problem domain. A causal event of the datacenter management problem then may be inferred according to the causal map.

Method and apparatus for problem analysis using a causal map

Provided is a method of monitoring a multicast flow. An initial multicast flow is characterized as a baseline flow entity. A subsequent multicast flow is compared against the baseline flow entity to identify anomalies between the baseline flow entity and the subsequent multicast flow.

Multicast flow monitoring

A system and algorithm to map alerts to a problem domain is provided so that the size of a codebook for the problem domain may be reduced and correlated independently of the general system and/or other problem domains in the system topology. When one or more symptoms of a fault appear in the system topology, the problem domain is discovered dynamically and the codebook for the problem domain generated dynamically. The system described herein provides for computation of a problem domain that has a reduced object repository for a set of objects which are directly or indirectly impacted by monitored symptoms. Multiple problem domains may be independently computed in order to build one or more codebooks. Each problem domain may be smaller compared to a system topology resulting in scale and performance improvements for codebook computation and correlation.

Scalable codebook correlation for cloud scale topology

In a method for selecting a path through a network of nodes from a source device to a destination device, per hop behaviors (PHB) of the nodes is identified and a path entropy for a plurality of candidate paths through the network between the source device and the destination device are derived based upon the PHBs of the nodes. In addition, one of the plurality of candidate paths is selected to communicate data from the source device to the destination device based on the path entropies of the plurality of candidate paths.

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Bengaluru, India

Manoj Kumar Jain