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Rocker latch for controlling engine valve actuation
Engine valve actuation systems and methods used to decompress an engine cylinder during engine start-up, shut-down, and for bleeder braking are disclosed. An...
Valve opening/closing timing control device
A valve opening/closing timing control device includes an advancing chamber and a retarding chamber between driving and driven rotating bodies, an intermediate...
Method and system for variable cam timing device
Methods and systems are described for an engine with a cam torque actuated variable cam timing phaser. Phaser positioning control is improved by reducing...
Fuel generation using high-voltage electric fields methods
Methods of making fuel are described herein. A method may include providing a first working fluid, a second working fluid, and a third working fluid. The method...
Gas turbine engine with integrated bottoming cycle system
The present application provides an integrated bottoming cycle system for use with a gas turbine engine. The integrated bottoming cycle system described herein...
Process and system for recovery of thermal energy from a steam dryer
The invention concerns a method for the recovery of thermal energy from a steam dryer 2 with a closed circulation 2.1 that produces excess steam SS ...
Driven starter pump and start sequence
Aspects of the disclosure generally provide a heat engine system with a working fluid circuit and a method for starting a turbopump disposed in the working...
Auxiliary oil system for negative gravity event
A lubrication system includes a bearing compartment. A main reservoir is fluidly connected to the bearing compartment by a main supply passage. A main pump is...
Forward compartment service system for a geared architecture gas turbine
A gas turbine engine includes a jumper tube that extends through a first passage and a second passage.
Dynamic stability and mid axial preload control for a tie shaft coupled
axial high pressure rotor
A middle support member is used to provide axial support and control to the tie shaft. The middle support member includes a high pressure compressor coupling...
Castable high temperature aluminum alloy
A turbine engine includes an airfoil made of an aluminum-rare earth element alloy.
Shaft break detection
The present invention provides a method of detecting shaft break in a shaft system comprising a shaft coupled between two masses. The method comprises a number...
Variable vane damping assembly
A variable vane damping assembly includes an inner bushing and an outer bushing. The inner bushing comprises an elastomeric material.
A turbomachine having a rotor assembly, a stator assembly and a toroidal inductor. The rotor assembly includes an impeller. The inductor is located between the...
Turboprop engine with compressor turbine shroud
A turboprop engine including an annular outer case including a mount ring for attachment to an aircraft along a plane to transfer loads from a propeller and...
A rotor assembly includes a rotor disc and a plurality of circumferentially-spaced, radially outwardly extending rotor blades. The rotor disc has a rim and a...
CMC blade attachment shim relief
A blade root shim comprises a base, a suction side shim wall, a pressure side shim wall, and a contact relief region. The base extends longitudinally between a...
Dual rotor blades having a metal leading airfoil and a trailing airfoil of
a composite material for gas turbine...
A rotor dual-blade for a gas turbine engine that has a first blade component extending radially between a root and a tip and a second blade component, separate...
Airfoil components containing ceramic-based materials and processes
A process for producing airfoil components containing ceramic-based materials and having a tip cap. The process entails forming an airfoil portion of the...
Blade disk arrangement for blade frequency tuning
A gas turbine engine and a method of tuning a rotor in the gas turbine engine wherein the rotor includes an array of blades extending from a rotor hub each...
Gas turbine engine component with diffusive cooling hole
A component for a gas turbine engine includes a gas path wall having a first surface, a second surface exposed to hot gas flow, and a cooling hole extending...
Propeller blade with spar rib
A propeller blade includes a foam core having a groove formed therein, a fibrous material filling at least a portion of the groove and a structural layer that...
Inter-blade sealing for a turbine or compressor wheel of a turbine engine
An inter-blade sealing for a turbine or compressor wheel of a turbine engine includes inserts engaged in longitudinal cavities in side edges of platforms of...
A plurality of stepped parts which have step surfaces facing an upstream side in a rotating axial direction of a structural member are provided in a tip portion...
Nose cone assembly
A nose cone assembly is provided comprising a nose cone 104, a support ring 106 on which the nose cone 104 is mounted, and an insulating layer 110 disposed...
Turbine apparatus with counter-rotating blades
A turbine apparatus has a main shaft, a first set of blades mounted to the main shaft, a second set of blades, and a barrel affixed to a periphery of the second...
Air cooling shaft at bearing interface
A gas turbine engine including a compressor rotor and a turbine rotor connected by a compressor shaft portion connected to the compressor rotor and a turbine...
Turbomachine with clamp coupling shaft and rotor hub together
A turbomachine includes a rotor hub that has a central opening there through. A shaft extends through the central opening. A clamp is coupled with the shaft and...
Compressor power and torque transmitting hub
A compressor hub includes a sleeve portion, a cone portion, and a mounting flange portion. The sleeve portion is cylindrical about a sleeve axis. The...
Boundary layer disk turbine systems for hydrocarbon recovery
Provided are various devices and processes that harness the inherent kinetic energy of a flowing pressurized fluid to drive a compressor to compress a fluid...
Method of collecting sample using multi-packer and apparatus thereof
A method of collecting samples that are not polluted at the outside of a borehole at a predetermined depth by using a multi-packer and an apparatus therefore....
Tracers for the study of an oil reservoir in high salinity and high
The invention relates to the use of a compound of the general formula (I), wherein A represents an alkanediyl radical having 2 to 4 carbon atoms, which may be...
Coring tools and related methods
Disposing a coring tool in a borehole adjacent a subterranean formation to be sampled. Determining a property of the formation and selecting a coring tool...
Alternative gauging system for production well testing and related methods
A method for measuring a well fluid parameter includes diverting a fluid through a first loop comprising one or more fluid parameter measurement components,...
System and method for microseismic analysis
This invention provides a method for characterizing natural fracture networks or other textural networks in an Earth formation when using microseismic...
A well comprising a borehole and wellhead apparatus, and a communication box at or proximate to the wellhead apparatus, the well comprising a plurality of...
Device for measuring and transmitting downhole tension
A system is disclosed that includes a tool string including one or more perforating guns, a conveyance operably coupled to the tool string at a socket coupling...
Real time well data alerts
A system for remote monitoring of well operations. The system may include an alerts module positioned proximate a well, at least one well parameter sensor in...
Drilling control system and method
A method of operating a drill string includes receiving signals indicative of rotation of a bottom hole assembly (BHA) of the drill string; receiving signals...
Subsea flow splitting arrangement
A subsea system and an oil/gas outlet arrangement for splitting of oil and gas. The subsea system comprising a separator (1), the separator (1) comprising; at...
Method of fracturing subterranean formations with crosslinked fluid
Subterranean formations are subjected to hydraulic fracturing with an aqueous fracturing fluid having guar or a derivative thereof, a borate crosslinking agent...
Environmentally sealed system for fracturing subterranean formations
An environmentally sealed system for fracturing subterranean systems including a fracturing fluid source, a proppant source, a proppant hopper comprising a...
Well system with annular space around casing for a treatment operation
In one aspect, a method for completing a wellbore in a formation is disclosed, that in one non-limiting embodiment includes placing a casing in the wellbore,...
Multizone frac system
An array of plugging devices are pumped sequentially from the surface through a liner that typically becomes horizontal in nature, where each plugging device is...
Method for inducing and further propagating formation fractures
Fractures are induced from lobe shaped inflatable members disposed at different axial locations along a string with frac ports in the circumferential gaps...
System for pumping hydraulic fracturing fluid using electric pumps
A system for hydraulically fracturing an underground formation in an oil or gas well to extract oil or gas from the formation, the oil or gas well having a...
Thermal vapor stream apparatus and method
A low-emission and environmentally-friendly apparatus and method is used to generate a high-pressure stream of thermal vapor. The thermal vapor stream may be...
Electrical heating of oil shale and heavy oil formations
A method (and system) is provided that enhances production of hydrocarbons from a subterranean formation by identifying at least one target interval of the...
Gas evolving oil viscosity diminishing compositions for stimulating the
productive layer of an oil reservoir
Disclosed is a chemical system of gas evolving oil viscosity diminishing compositions (GEOVDC) for stimulating the productive layer of an oil reservoir, that is...
Targeted oriented fracture placement using two adjacent wells in
subterranean porous formations
A method is taught of creating one or more targeted fractures in a subterranean formation. The method comprises the steps of drilling and completing two wells...