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| Number | Title | Issue Date |
| 5110050 | Gas turbine engine nozzle A variable geometry nozzle for a gas turbine engine in which a circumferential array of flaps are pivotally connected to the engine by their upstream ends, the flaps comprising interdigitated flexible and rigid flaps. The geometry of the nozzle is varied ... | 05/05/1992 |
| 4889469 | A nozzle guide vane structure for a gas turbine engine A nozzle guide vane structure for a gas turbine engine in which the vane comprises an aerofoil portion and inner and outer platforms. The non gas-contacting surfaces of the platforms are provided with forward and rearward sealing flanges sealed to adjacen... | 12/26/1989 |
| 4229140 | Turbine blade A turbine blade comprising an aerofoil-shaped body having a main portion and a trailing portion, the latter being of undulating shape so as to define at each side of the blade chordally extending troughs. The blade may include cooling air holes extending ... | 10/21/1980 |
| 4201513 | Gas turbine engines A mounting arrangement for the fan rotor of a ducted fan engine includes a first drive which supports and rotates the fan under normal operating conditions but which includes a frangible connection which breaks when an excessive out-of-balance force is ap... | 05/06/1980 |
| 4186222 | Mould insulation A method of insulating a shell mould for investment casting by adhering a particulate or fibrous insulator such as perlite, vermiculite or ceramic fibres to a shell mould by an adherent coating. In a preferred process the shell mould is first dipped into ... | 01/29/1980 |
| 4159407 | Methods and apparatus for electrically machining a work piece The production of passages in workpieces is described by an electrical method which simultaneously utilizes electrochemical and electrical discharge machining with a single electrode and dilute electrolytes. The method overcomes the metallurgical defects ... | 06/26/1979 |
| 4153998 | Probes A probe for determining at what point in space contact is made between an object and a stylus. The stylus is located in an accurately defined rest position relative to a housing and slight deflection of the stylus away from this rest position is detected ... | 05/15/1979 |
| 4151714 | Dual cycle gas turbine engine A dual cycle vectored thrust engine has a flow control valve for changing the cycle from a pure jet for supersonic operation to by-pass cycle for vertical take-off. The valve has two separate inlets, two separate outlets and passageways within the valve w... | 05/01/1979 |
| 4152598 | Lubricant distribution determination by neutron radiography Cold neutron radiation of energy less that 0.025 eV having a flux greater than 1×103 neutrons/square centimeter/second is used to diagnose temporal information about the spatial distribution of hydrocarbon fuel and lubrication oils in internal... | 05/01/1979 |
| 4141501 | Nozzles for gas turbine engines A convergent divergent exhaust nozzle for a jet engine, in which a circumferential array of interdigitated master and slave petals are axially movable along an arcuate track. Each petal is divided by a hinge into upstream and downstream portions and the d... | 02/27/1979 |
| 4137454 | Radiography In pulsed X-ray fluoroscopy in which the fluoroscopic screen receiving the X-rays is subsequently observed by a video recording system incorporating an image intensifier, the quality of the video image is impaired because of electrical noise and phosphor ... | 01/30/1979 |
| 4119825 | Induction heating apparatus Induction heating apparatus for a dieless drawing operation includes a flexible induction coil made from a flexible metallic strip contained within an elastomeric sleeve which also defines a cooling fluid passage. The coil is sufficiently flexible to be c... | 10/10/1978 |
| 4092669 | Apparatus for measuring spatial data from recorded images Apparatus for taking spatial measurements from recorded radiographic or photographic films includes a co-ordinate measuring framework on which are statically mounted a video camera and light source, and on which can be placed the film. The camera scans a ... | 05/30/1978 |
| 4092537 | Diagnostic apparatus and method for gas turbine engines The passage of foreign objects such as bullets or stones through a gas turbine engine compressor is observed by directing beams of x-radiation through the engine, receiving the beams on fluorescent screens, to form fluorescent images, intensifying the flu... | 05/30/1978 |
| 4073136 | Fuel system for gas turbine engines A fuel system for a gas turbine engine has in flow series a low pressure pump, a filter and a high pressure pump, latter being connected to a delivery duct leading to the engine. The low pressure pump is a jet pump wherein the jet is produced by spill flo... | 02/14/1978 |
| 4069663 | Thrust reverser for by-pass gas turbine engine A by-pass gas turbine engine capable of producing an unmixed exhaust stream which comprises a core of hot turbine exhaust gases surrounded by an annular layer of by-pass air, is combined with a target thrust reverser. The ratio of the total pressure of th... | 01/24/1978 |
| 4063847 | Gas turbine engine casing A composite casing for a gas turbine engine comprises an inner wall which may be an integrally formed drum or a plurality of separate rings, and which is overwound with carbon fibers in a cross-weave and resin bonded to the inner wall. Honeycomb material ... | 12/20/1977 |
| 4051720 | Engine useful life measuring device The useful life of rotating machines is used up depending upon the load which the machine has to bear. In some machines it is necessary to measure the usage of the machine life and the present invention provides a device for doing this. In the described e... | 10/04/1977 |
| 4050843 | Gas turbine engines A seal clearance control device for maintaining a radial clearance between turbine blade tips and the surrounding seal ring. The shroud is controlled by a relatively fast response ring and a relatively slow ring the fast ring serving to control the radial... | 09/27/1977 |
| 4049360 | Variable stator vane actuating mechanism A mechanism for varying the angle of attack of stator vanes of a compressor in a turbo machine. The vanes in each row are all connected to a respective encircling ring. The rings from all the rows of variable stators are connected to a beam which lies alo... | 09/20/1977 |
| 4049401 | Apparatus for separating suspensions of liquids in gas A centrifugal separator for separating suspensions of oil mist in air and especially intended for use with aircraft engines comprises a rotatable chamber filled with a relatively rigid porous material and driven by a hollow shaft. An inlet for the suspens... | 09/20/1977 |
| 4049199 | Nozzles for gas turbine engines A variable area convergent/divergent iris nozzle for a gas turbine engine has a plurality of interdigitated master and slave petals. Each master petal has a pair of axially spaced rollers which run on guide tracks mounted on the engine jet pipe. A pivotab... | 09/20/1977 |
| 4047682 | Fan cowl translation lock A gas turbine engine cowl has a portion which translates axially of the remainder, to open or close a reverser gas flow gap. A yoke is attached to the fixed cowl upstream of the gap which yoke is engageable with a member on the translating cowl portion, b... | 09/13/1977 |
| 4047381 | Gas turbine engine power plants for aircraft Gas turbine engine power plants sometimes are provided with thrust reversing equipment, the outlet of which is close to the power plant air intake. Such arrangements create re-ingestion problems. There is described herein an apparatus which either maintai... | 09/13/1977 |
| 4046662 | Electro-chemical machine tools In an electro-chemical machine tool electrolyte drainage flow is acted upon, on its way to the sump, by a device which breaks up the flow into isolated droplets, so as to prevent electrical leakage occurring via the electrolyte flow.... | 09/06/1977 |
| 4038818 | Gas turbine power plant having series-parallel valve arrangement A gas turbine powerplant which has two compressor parts alternatively connectable: 1. in series for supersonic flight, or, 2. in parallel for subsonic flight and particularly useful at take-off. The compressor parts are co-axial and a valve extends obliquely b... | 08/02/1977 |
| 4035604 | Methods and apparatus for finishing articles The disclosure of this invention pertains to the method of removing burrs from an electrically conductive article by exposing the article to a plasma flame wherein the parameters of the plasma are so chosen that the plasma becomes concentrated at the burr... | 07/12/1977 |
| 4035535 | Sound attenuating structure Use of bulk sound absorber-backed spaced-cell honeycomb structures as sound attenuating liners in the flow ducts of gas turbine engines involves the disadvantage that the bulk absorber may soak up water or fuel present in the honeycomb after entry therein... | 07/12/1977 |
| 4032359 | Removal of aluminium rich coatings from heat resisting alloys A solution for removing a diffused aluminium coating from a component made of nickel or cobalt base high temperature alloy, consisting of Nitric Acid 57%, Sulphuric Acid 29% and Water 14%. The solution removes all but traces of nickel or cobalt-rich alumi... | 06/28/1977 |
| 4032258 | Bladed rotor for fluid flow machines The disclosure of this invention pertains to a bladed rotor for gas turbine engines wherein each blade has a root portion connected to a blade support element spaced radially outwardly from the rim of a single disc and being of greater axial extent than t... | 06/28/1977 |
| 4028044 | Fuel burners A gas turbine engine fuel burner comprises the combination of an atomising fuel nozzle and a vaporizing duct in which the atomised fuel is arranged to impinge on the wall of the vaporizing duct and mix with a portion of the compressor delivery air from th... | 06/07/1977 |
| 4023006 | Plasma arc welding method A method of operating a plasma welding apparatus producing a plasma arc and having valve means arranged to control gas flow for the plasma arc and power supply means arranged to control welding current for the plasma arc, wherein the plasma arc current, g... | 05/10/1977 |
| 4019833 | Means for retaining blades to a disc or like structure In order to prevent axial movement of blades with respect to their rotor, a locking ring is provided which abuts the blades and is mounted from the disc by a bayonet connection. The blades engage with the ring to prevent its rotation with respect to the d... | 04/26/1977 |
| 4018615 | Refractory material containing fused silica and crystalline phase silica The high temperature dimensional stability and resistance to thermal shock of silica articles is improved by ensuring that from 45-60% by weight of the article consists of crystalline phase silica. Such levels of crystalline phase silica may be attained b... | 04/19/1977 |
| 4017207 | Gas turbine engine A duct wall embracing the turbine of a gas turbine engine is cooled by impingement of air jets on to the outside of the wall. For control of the air flow the wall is surrounded by a chamber divided into inlet and outlet regions by a partition having space... | 04/12/1977 |
| 4013424 | Composite articles A high temperature corrosion resistant nickel-base alloy, e.g. for turbine stator blades in gas turbine engines, providing a good balance between mechanical strength, oxidation resistance and compatibility between a coating and a substrate. A preferred co... | 03/22/1977 |
| 4013246 | Mounting bypass gas turbines engines on aircraft A bypass gas turbine engine is mounted from an aircraft pylon by a mounting arrangement in which the engine outer casing and the core gas generator are mounted independently to the pylon and in which all the connections between the outer casing and the py... | 03/22/1977 |
| 4013976 | Gas dynamic lasers In a high-power laser system it is proposed that combustion or compressor gases be diverted from the normal flow path through a gas turbine engine into an auxiliary flowpath, and that their composition be subsequently adjusted by burning at least one hydr... | 03/22/1977 |
| 4008569 | Gas turbine engine A gas turbine engine is provided with a novel heat exchanger which exchanges heat between the compressor delivery air and turbine exhaust gas. The exchanger comprises a stack of rotary discs angled to produce two sets of wedge-shaped flow areas between th... | 02/22/1977 |
| 4009146 | Method of and mixture for aluminizing a metal surface A coating mixture for use in aluminizing metal surfaces comprises 5 to 50% by weight of an organic resin binder, 2 to 25% by weight of one or more halides and the balance finely divided particles of an aluminium-containing alloy. The alloy has a melting p... | 02/22/1977 |
