Patent application number | Description | Published |
20080206046 | Rotor seal segment - A ceramic seal segment for a shroud ring of a rotor of a gas turbine engine, the ceramic seal segment positioned radially adjacent the rotor and characterized by being a hollow section that defines an inlet and an outlet for the passage of coolant therethrough. | 08-28-2008 |
20080247863 | Sensor | 10-09-2008 |
20080267770 | SEAL - A turbofan gas turbine engine ( | 10-30-2008 |
20090044933 | Heat exchanger - A heat exchanger is provided in which heat exchanger shells are formed by electro forming about a mandrel. The shells are attached and joined to provide a heat exchanger module. As the shells are not press formed problems with respect to material elongation to achieve deep grooves in the shells are potentially avoided and shells can be created with more desirable thickness to achieve more efficient heat exchange. Furthermore, reduced shell thickness will also reduce weight and therefore improve the acceptability of heat exchangers in particular applications such as those associated with aerospace and automotive sports. | 02-19-2009 |
20090286189 | COMBUSTOR - A pressure rise combustor is provided with fuel provided at intermittent periods. The fuel is pulsed at timings such that the phase lag between the addition of the fuel and a resultant pressure rise is minimised. The fuel is pulsed such that the unsteady addition of heat reinforces the amplitude of an unsteady pressure fluctuation. | 11-19-2009 |
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 |
20100054917 | Blade arrangement - Blade arrangements | 03-04-2010 |
20120260735 | INSPECTION OF PIPE INTERIOR - A method for inspecting the interior of a non-horizontal pipe includes (a) filling the pipe with a first fluid, (b) feeding a second fluid into a lower part of the pipe when the second fluid is more dense than the first fluid or into an upper part of the pipe when the second fluid is less dense than the second fluid the pipe, a meniscus forming between the first and the second fluid and moving along the pipe, (c) introducing an inspection device having an average density between the densities of the first and second fluids such that the device locates at and moves with the meniscus, (d) obtaining inspection data from the inspection device as the device moves along the pipe, (e) determining positions of the meniscus as it moves along the pipe, and (f) relating the meniscus positions to positions at which the inspection data is obtained. | 10-18-2012 |
20120260741 | DETERMINATION OF PIPE INTERNAL CROSS-SECTIONAL AREA - A method is provided of determining the internal cross-sectional area of a pipe along its length. The method includes the steps of: | 10-18-2012 |