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| Number | Title | Issue Date |
| 6658980 | Combat pilot aid system A combat pilot system for an aircraft comprises corresponding combat pilot devices 12, 12' provided in a runtime module 14 on board the aircraft and a ground-based system training module 16 respectively. The run-time module 12' is trained using model data... | 12/09/2003 |
| 6646240 | Fastening arrangements A tool (38) secures and releases a fastening arrangement which includes a first component (10) and a second component (12) which may be releasably fastened together. Fastening is by means of a retention element (34) of shape memory material associated wit... | 11/11/2003 |
| 6480792 | Fatigue monitoring systems and methods incorporating neural networks A fatigue monitoring system and method is disclosed in which a stream of data relating to the stresses experienced at a plurality of locations over the structure during operation is applied to a neural network trained to remove data stream values deemed t... | 11/12/2002 |
| 6279500 | Aircraft carriers and methods of operation thereof An aircraft carrier is provided with an airflow deflector such as flap 26, an inflatable flap 26 or an airjet curtain such that air passing along the flight deck is provided with an upward component of velocity, thereby to provide an upwash in the airwake... | 08/28/2001 |
| 6149749 | Repair of composite laminates A patch of fibre reinforced plastics composite material, a repair kit including such a patch and a method of using such a patch and repair kit are provided. The patch (1) is for attachment to a surface (17) of a fibre reinforced plastics composite structu... | 11/21/2000 |
| 6149105 | Deployment mechanisms for aircraft auxiliary airfoils A deployment mechanism for moving an aircraft wing leading edge slat (2) or trailing edge flap (4) relative to a main airfoil (1) is provided. The mechanism includes an I-section support beam (6) extending between the main airfoil (1) and the slat (2) or ... | 11/21/2000 |
| 6135395 | Aircraft wing leading edge high lift device with suction An aircraft wing, wing assembly and method of reducing drag are provided. The wing asembly includes a main wing portion (10) and a leading edge high lift portion (12). The high lift portion is movable between a retracted position in which it generally mer... | 10/24/2000 |
| 6131852 | Aircraft undercarriage locking system An aircraft undercarriage having a drag stay mechanism 22 extending upwardly and rearwardly from a main leg portion of the gear to a part of the aircraft structure. The undercarriage also includes a locking linkage extending between the main leg 10 and th... | 10/17/2000 |
| 6125216 | Strain isolated optical fibre bragg grating sensor A strain isolated optical fibre Bragg grating sensor (1) has an optical fibre (2) provided at or adjacent one end (2a) with the Bragg grating (3). An open mouth cap (4) surrounds the fibre end (2a) and region provided with the Bragg grating (3) at a spaci... | 09/26/2000 |
| 6106644 | Application of stop-off material, particularly for use in diffusion bonding and superplastic forming A method of applying a pattern of stop-off material to a sheet is described, the pattern being stored in a computer memory; the method comprises: (a) placing the sheet (22) on a table (12) that is traversable by a printing head (14) capable of applying je... | 08/22/2000 |
| 6068212 | Aircraft structure and powerplants for use therein The invention provides an aircraft incorporating a gas turbine engine powerplant wherein at least part of the powerplant forms a part of, or is integrated into, the airframe (i.e. the load-bearing structure of the aircraft) such that the powerplant is sub... | 05/30/2000 |
| 6065720 | Manufacture of aircraft A method of manufacture of an aircraft comprising the manufacture of a range of interconnectable demountable structural modules and assembly of one of a plurality of aircraft variants by the selection and assembly of a pre-determined set of said structura... | 05/23/2000 |
| 6048477 | Manufacture of composite laminates A method of forming an aircraft landing gear strut fairing/debris protector and such a fairing/debris protector are provided. The fairing/debris protector comprises first and second fiber reinforced plastics skin elements (21, 23) with a foamed core (27) ... | 04/11/2000 |
| 6042916 | Composite material construction A composite material construction is provided including a laminate of plies (1, 2, 3, 6, 7) arranged with at least one warp dominated ply (7), alternating with at least one weft dominated ply (1, 2, 3) in a thickness direction and at least two weft domina... | 03/28/2000 |
| 6031602 | Method and apparatus for inspecting or testing a sample by optical metrology A sample (1) is inspected or tested by illumination in which a line of coherent radiation (2) is scanned across the sample (1) with zero shear in the direction of scan. Two laterally displaced images of the sample (1) are generated which are phase stepped... | 02/29/2000 |
| 6018160 | Apparatus for sensing temperature and/or strain in an object with optical fiber Bragg gratings Apparatus for sensing temperature and/or strain in an object includes a broadband light source (1), connector means (2) in the form of an optical circulator or an optical coupler to which at least two substantially identical optical fiber Bragg gratings (... | 01/25/2000 |
| 5993122 | Machine tool attachment A drill or machine tool attachment for use with a vacuum debris extraction system, comprising a bar to which a vacuum extraction nozzle is attached, and a tube slidably mounted on the bar and connected to a drill or machine tool. The nozzle is located on ... | 11/30/1999 |
| 5974896 | Structural deflection measurement Apparatus for the measurement of out of plane displacements of a panel of material under test comprises; a laser (2) capable of focusing a laser spot (8) onto the surface of the panel (6) of material; a line generating lens (12) for converting the image o... | 11/02/1999 |
| 5924279 | Engine intake design An inlet gas mixing element for a gas turbine engine, comprising a gas intake duct 10, and downstream of the inlet duct a mixing element 22, the mixing element being so disposed in relation to the inside of the duct so as to rotate thereby urging the forc... | 07/20/1999 |
| 5923227 | Non-linear dispersive transmission line A non-linear dispersive transmission line includes a plurality of substantially block-like shaped capacitor elements (4) arranged in sequence in at least two arrays. The even numbered elements (4b, 4d etc) extend side by side to form a first array and the... | 07/13/1999 |
| 5913808 | Turbine engine intake with gas mixer An inlet gas mixing element for a gas turbine engine, comprising a gas intake duct 10, and downstream of the inlet duct a mixing element 22, the mixing element being so disposed in relation to the inside of the duct so as to rotate thereby urging the forc... | 06/22/1999 |
| 5909273 | Fiber optic interferometric strain gauge assembly using an intensity ratio A fiber optic interferometric strain gauge assembly includes a sensor element (1) in the form of a length of single mode optical fiber whose ends (1a) and (1b) have a peak reflectivity not exceeding 10%. This reflectivity is provided either by semi-transp... | 06/01/1999 |
| 5879481 | Heat treatment of aluminium-lithium alloys A method of heat treating an aluminum--lithium alloy is provided. The method includes carrying out a succession of at least two artificial aging steps. The first such step is carried out within a first temperature range and one or more further steps are c... | 03/09/1999 |
| 5860283 | Environmental control system An environment control system which comprises: a cooling turbine drivingly connected to a compressor, means for driving said cooling turbine-compressor combination, and intercooler means, wherein, in a first mode of operation, the working fluid circulates... | 01/19/1999 |
| 5793520 | Optical cross bar switch assembly An optical cross bar switch assembly includes a first lens device (5) in the form of an array of lenslets (5a) operable to receive light from the input optical fiber array (1) in a manner such that the light from each fiber is received and collimated sepa... | 08/11/1998 |
| 5739410 | Method for matching vibration mode frequencies on a vibrating structure Vibration mode frequencies of a vibrating structure gyroscope sensing element are matched by removing and/or adding a desired variable amount of material from or to the sensing element (1) at at least one point (4) on or in the vicinity of the neutral axi... | 04/14/1998 |
| 5708565 | Thermal and shock resistant data recorder assembly A thermal and shock resistant data recorder assembly as an outer container (1) containing an inner container (2) which in turn houses one or more data recorder elements (3). The elements (3) which have a thin conformal coating thereon are encapsulated in ... | 01/13/1998 |
| 5668671 | Dioptric lens system A dioptric lens system comprises a plurality of lenses and a rear diaphragm functioning as an aperture diaphragm. An overall length in the order of the focal distance is obtained by the features that the object side surface of the object side lens compris... | 09/16/1997 |
| 5650849 | Optical rate sensor having modulated clockwise and counterclockwise beams In an open loop rate sensor clockwise (CW) and counterclockwise (CCW) beams from a common source 10 pass in opposite directions around a coil 20 of optical fiber and recombine on a detector 24. A phase modulator 22 applies a stepped phase modulation in wh... | 07/22/1997 |
| 5638165 | Crack detection system An apparatus and method for utilizing the deformation characteristics of optical fiber transmission paths to enable the detection of deformations in materials, in which the fibers are disposed in relation to the material such that each separate deformatio... | 06/10/1997 |
| 5620152 | Tethered missile system A missile (1) suitable for intercepting an airborne anti-tank threat is tethered to a ground station by control cables (9A,9B,9C,10). By altering the tension on the cables (9A,9B,9C) a vectored thrust nozzle arrangement (6,7) is rotated in order to contro... | 04/15/1997 |
| 5619060 | Thermal picture synthesizer device for generating a thermal image A thermal picture synthesis device (1) of multi-layer construction has a resistor element (3) spaced from a semi-conductor substrate layer (2). The resistor element (3) is made of titanium or Ni-chrome. A drive element layer (4) is provided either in or a... | 04/08/1997 |
| 5619327 | Testing a metal component for cold compression of the metal The invention provides a method of testing a metal component (1) for cold compression of the metal when used, for example for fatigue enhancement. The component defines a generally smooth surface (6) and includes a region (22), eg an aperture, subject to ... | 04/08/1997 |
| 5603449 | Forming of diffusion bonded joints in superplastically formed metal structures A method of forming a diffusion bonded joint during superplastic forming of a hollow metal structure (43) from sheet material (15, 16, 17, 18) using a two-piece die (1) having opposed clenching faces (9, 10) disposed along a split line (2) thereof, the st... | 02/18/1997 |
| 5574601 | Optical beam expander A beam expander suitable for use with laser machining apparatus comprises a convex paraboloidal surface 7 and a concave paraboloidal surface 8 formed from a single metal element 10. The expander has an optional zoom facility provided by a plane mirror 12,... | 11/12/1996 |
| 5567082 | Fastening arrangements A fastening arrangement for connecting two items comprises a stud 16 secured to one item 14 and a captive fastener 18 located in a fastener body 20 secured to the other item. The captive fastener 18 is made up of a nut 32, a washer 34 and an outer clip 36... | 10/22/1996 |
| 5564655 | Rigging of aircraft wing flaps Apparatus, method and an arrangement for rigging an aircraft wing flap are provided. The apparatus (27) is for measuring horizontal and vertical positioning of a trailing edge (21) of a wing flap (14, 15) relative to a flap track beam (6) upon which the f... | 10/15/1996 |
| 5557543 | Tracking apparatus Apparatus suitable for tracking a road vehicle from an aerial platform uses a correlator (5) for processing data received from a thermal imager (1). The apparatus derives a binary template for use by the correlator (5), the template (13) being based on po... | 09/17/1996 |
| 5376187 | Diffusion bonding of aluminum and aluminum alloys The diffusion bonding of aluminum and aluminum alloys presents problems because, when left exposed to the atmosphere even for a short time, they acquire an extremely tenacious surface oxide layer that inhibits or prevents satisfactory diffusion bonding. U... | 12/27/1994 |
| 5333814 | Towed aerodynamic bodies An airborne body (1) towed behind an aircraft (2) is manoeuvrable around the flight path of the aircraft in order to intercept or collide with an incoming threat and thus protect the aircraft either by directly damaging the threat or causing it to fuze pr... | 08/02/1994 |
