Patent application number | Description | Published |
20090035131 | Component for a gas turbine engine - Blades for gas turbine engines which are formed from composite materials have problems with respect of resistance to impacts such as bird strikes. Previous blades formed from metals had some ductility towards the trailing edge which could accommodate the whiplash effects of impacts. With regard to composite materials such ductility is not present. By providing projections | 02-05-2009 |
20100054945 | Aerofoil - Composite aerofoils for gas turbine engines are commonly provided with a metal protection strip along the leading edge, to prevent erosion of the leading edge in use and to protect against impacts from foreign bodies. A problem with such strips is that they can cause serious damage to other parts of the engine if they become detached from the aerofoil. The invention provides an aerofoil having such a protection strip, characterised in that the protection strip includes one or more weakening features to reduce the ability of the protection member to withstand a compressive force applied along its length. The weakening features encourage the protection member to break up under impact, or if it becomes detached from the aerofoil, so that damage to other parts of the engine is minimised. | 03-04-2010 |
20110044797 | ELECTRICAL CONDUCTOR PATHS - A component, for example an aerofoil vane or other gas path structure in a gas turbine machine such as a gas turbine engine, in which an insulated electrical conductor path ( | 02-24-2011 |
20110217156 | CONTAINMENT CASING - A containment casing is provided comprising a radially outer layer; an intermediate energy absorbing layer, and a retention framework for retaining an aerofoil blade in the event of detachment of whole or part of the blade. The retention framework is distributed axially and circumferentially along the casing and extends substantially radially inwardly at least partially through the intermediate energy absorbing layer. | 09-08-2011 |
20110217160 | COMPONENT COMPRISING A RESIN MATRIX - A composite material comprises plies | 09-08-2011 |
20110217166 | LAYERED COMPOSITE COMPONENTS - A layered composite component | 09-08-2011 |
20110217517 | PROCESS FOR MANUFACTURING A LAYERED COMPOSITE COMPONENT - A process for manufacturing a layered composite component includes introducing a plurality of micro cracks into a predetermined region of the component in order to provide an increase in strength of the component at certain critical regions of high loading within the component. The micro cracks may be introduced using mechanical means, a pre conditioning load, or by manipulation of process parameters, material properties or stacking sequences. | 09-08-2011 |
20110219883 | STRAIN GAUGE ASSEMBLY AND METHOD - A strain gauge assembly | 09-15-2011 |
20110293435 | COMPOSITE AEROFOIL - A composite blade ( | 12-01-2011 |
20120032368 | FIBRE CUTTING DEVICE AND METHOD - A fibre cutting device and method for cutting one or more exposed portions of a through-thickness fibre in a surface of a composite material, the device including: a cutting element for cutting the one or more exposed portions; a suction device which is operable to extract the cut exposed portions from the surface of the composite material; and a storage device for receiving the cut exposed portions. | 02-09-2012 |
20120034089 | COMPOSITE MATERIAL AND METHOD - A composite material and method for manufacturing the material, the material including: a plurality of plies layered one on top of the other; and one or more through-thickness fibres which join one or more of the plurality of plies to one another; wherein the one or more through-thickness fibres form a boundary which delineates one or more discrete regions of the material. | 02-09-2012 |
20120086152 | METHODS AND APPARATUS FOR FORMING A COMPOSITE COMPONENT - A mould for a composite component having a fillet joint, the mould including a mould body having a cavity within which the component is formed, and an insert mating with the mould body and including a forming surface against which, in use, the fillet of the component fillet joint is formed. The insert may be thermally insulating and highly rigid. A method of forming a composite component having a fillet joint using a mould, the method including forcing a surface of the fillet region of the component to adopt a non constant radius of curvature while the component is inside the mould during the cure process is also provided. Additionally, a method of forming a composite component having a fillet joint that is defined between first and second legs the method including placing the legs of the component in bending during cure of the component is described. | 04-12-2012 |
20120114884 | COMPOSITE MATERIAL HOLLOW AXISYMMETRIC BODY - A method of manufacturing a component comprising a hollow axisymmetric body formed of a cured composite material is provided. The method includes the step of positioning the constituents of the composite material in a mould corresponding to at least a portion of the hollow axisymmetric body. The composite material is cured into a composite part, and residual stresses are generated in the composite material during the curing by controlling the temperature of the constituents in the mould. When the composite part is released from the mould, relaxation of the residual stresses causes one or more regions of the composite part to deflect in the radial direction of the hollow axisymmetric body, the position of greatest radial deflection of each region having a radial deflection which is at least 0.1% of the greatest diameter of the hollow axisymmetric body. | 05-10-2012 |
20120205835 | APPARATUS FOR FORMING A COMPOSITE COMPONENT | 08-16-2012 |
20120247209 | LAYERED COMPOSITE COMPONENTS - A method is provided that enables the identification of a region of a layered composite component that a test signal has passed through. The method comprises applying a label to the test signal as it passes through the region, such that the label applied to the test signal is indicative of the said region. The labelled signal can be identified by a sensor, even if the signal is of low strength and amongst a lot of noise, such as that caused by the multiple reflections and refractions that take place when an acoustic signal passes through a layered composite component. | 10-04-2012 |
20120251305 | IMPACTOR CONTAINMENT - A containment system | 10-04-2012 |
20120269637 | METHODS FOR CONTROLLING FRICTION BETWEEN HETEROGENEOUS CONTACT SURFACES - A method of conditioning a first, heterogeneous contact surface for operational engagement with a second contact surface, the method comprising: performing a smoothing operation on part or all of the first contact surface whilst subjecting said part or all of the first contact surface respectively to a contact pre-stress corresponding to a nominal operational contact stress between the first and second contact surfaces. | 10-25-2012 |
20120270006 | COMPOSITE FLANGE ELEMENT - A composite flange element formed on a casing comprising a portion of a component and an adjoining flange portion, the composite having a ply layup comprising: one or more first plies extending over both the portion of the component and the flange portion; one or more second plies extending over the flange portion; and one or more third plies extending over the portion of the component; wherein the first, second and third plies are selected to provide desirable properties for the portions over which they extend. The flange element so formed consists of one or more load spreading features associated with the flange portion and one or more stress reduction features in the region where the portion of the component meets the flange portion. Preferably the plies are arranged or interleaved such that they run up the case and flange without distortion. | 10-25-2012 |
20120271458 | METHOD OF MODIFYING EXCITATION RESPONSE CHARACTERISTICS OF A SYSTEM - A method of modifying excitation response characteristics of a structural system, including an aerofoil blade mounted to a support disc, including the steps: (a) identifying a limit cycle associated with the system; (b) determining the amplitude of the limit cycle; (c) comparing the amplitude of the limit cycle against a threshold value; and (d) if the amplitude of the limit cycle is greater than a threshold value, modifying the system to reduce the amplitude of the limit cycle. | 10-25-2012 |
20120296575 | DAMAGE TOLERANCE OF A ROTOR ASSEMBLY - A system is provided for improving the damage tolerance of a rotor assembly. The system includes one or more measurement subsystems for measuring the stresses in respective parts of the rotor assembly and issuing respective measurement signals. The system also includes a control subsystem for receiving the measurement signals from the measurement subsystems, determining a response to measured stresses indicative of crack growth, and issuing response signals. The system also includes one or more release subsystems for receiving respective response signals, and activating controlled release of material from respective parts of the rotor assembly to mitigate the effect of the crack growth. | 11-22-2012 |
20130044941 | METHOD FOR LOCATING ARTEFACTS IN A MATERIAL - A method for locating artefacts, such as particles or voids, in a material includes the steps of defining a path through a volume of the material, sensing the presence and type of any artefacts along the path and determining for each sensed artefact, the respective distance along the path. Analysis of the quantity of sensed artefacts and their respective position along the path enables the determination of measures for the artefact density, artefact size and artefact distribution in the material. | 02-21-2013 |