| Patent application number | Description | Published |
|---|
| 20080256957 | Joint for a shape memory material - A joint between a first component ( | 10-23-2008 |
| 20080267770 | SEAL - A turbofan gas turbine engine ( | 10-30-2008 |
| 20090003663 | Threshold Score Validation - A method is provided whereby confidence in a validation parameter set is achieved by comparison with a known sample of a parameter in terms of the expected template comparison score as well as mean values and deviation from that score. Thus, with respect to user individual identification, biometric parameters such as fingerprint or handwriting or voice recognition can be utilised to compare the stored template for that individual with the putative biometric response in order to determine deviation from the mean. Previous systems provided a stored template and then ranging either side to simply give a pass/fail response. By adaptation of the ranging quotient for a particular individual, a percentage confidence in the pass/fail response can be achieved. For example an individual -may have a wider range of deviation than another individual and therefore close repetition of the biometric data may be indicative of a lower percentage confidence than with an individual with a narrower deviation. Furthermore, through a learning process, the ranging quotient may he varied as a users actual response varies with age or Otherwise. | 01-01-2009 |
| 20090297330 | Blade clearance arrangement - Control of blade clearance gaps between rotating turbine blades and an associated casing in a gas turbine engine is important in order to maintain operational efficiency. It is desirable to achieve accurate gap control but previous passive and scheduled thermal gap adjustment systems have been relatively course. By provision of a winding through which a specific electrical current is passed in order to create electro-magnetic force for displacement of an armature associated with a seal forming part of the casing it is possible to adjust the gap between that seal and a tip part of a rotating blade assembly. Normally a blade gap monitoring technique is used in association with specific operational requirements with respect to the gap by the control in order to determine the electrical current presented to the winding. As a fail-safe measure a permanent magnet or bias or some other form can be provided to ensure displacement to a fail-safe position with an adequate blade gap clearance for continued operation should there be power failure or an excess electrical current presented to the winding. | 12-03-2009 |
| 20100043899 | ARRANGEMENT FOR CONTROLLING FLOW OF FLUID TO A GAS TURBINE ENGINE COMPONENT - An arrangement for controlling flow of fluid to at least one component of a gas turbine engine, the arrangement comprising:
| 02-25-2010 |
| 20100096571 | MAGNETIC VALVE - A magnetic valve arrangement for controlling flow of fluid, the magnetic valve arrangement having at least one ferromagnetic element ( | 04-22-2010 |
| 20110209563 | TORQUE MEASUREMENT - A strain sensor apparatus for a rotatable shaft including a radiation emitter/receiver, a vibration element attached to the shaft and a reflector that is positioned to reflect radiation onto the vibration element. | 09-01-2011 |
| 20110217170 | VARIABLE SHAPE ROTOR BLADE - A rotor blade comprising a core blade section; and a trailing edge section, the trailing edge section being attached to the core blade section along a join interface. The trailing edge section comprises a shape memory material which is actuable so as to cause selective deformation of the trailing edge section between a first condition in which a trailing edge of the trailing edge section follows a substantially smooth profile and a second condition in which the trailing edge is perturbed. The direction of the perturbation may be oblique or perpendicular to the direction of flow over the blade in use. The rotor blade may be a fan or propeller for a gas turbine engine. | 09-08-2011 |
