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| Number | Title | Issue Date |
| 7314124 | Vibration damping apparatus A damping apparatus for damping vibrations in a vibrating system including a piston which is reciprocally movable in a hydraulic fluid filled damper chamber, piston movement in either direction of movement being resisted by fluid pressure in the damper chamber behin... | 01/01/2008 |
| 7264444 | Aerofoils An aerofoil has a body, and at least one flow control device, the flow control device including a passage within the body of the aerofoil, and a passage outlet at an upper aerofoil surface of the aerofoil, whereby in use, air from the passage passes through the pass... | 09/04/2007 |
| 7114973 | Contact arrangement A contact arrangement, for enabling an electrical connection to be made between first and second electrodes, in which the first electrode is moveable in a direction along or parallel to an axis into contact with the second electrode, the second electrode including a... | 10/03/2006 |
| 6723272 | Moulding process A method of moulding articles from layers of composite material being fibres impregnated with uncured resin, includes draping at least one layer of the composite material over a moulding tool, applying over the composite material layer or layers a membrane, and esta... | 04/20/2004 |
| 5657946 | Static vent units This invention provides a static vent unit e.g. for use on the side of an aircraft and which in operation is subjected to airflow from any direction within a wide airflow incidence range comprises a generally flat plate having an outer surface for fitment... | 08/19/1997 |
| 5588616 | Static vent units A static vent unit particularly for use in the side of a helicopter fuselage includes a support plate having a vent port and a strake extending generally horizontally below the vent port with an upper surface facing the vent port and generally perpendicul... | 12/31/1996 |
| 5529458 | Circulation control aerofoils A circulation control aerofoil having an internal chamber for receiving during operation air for exhaust through a circulation control air exhaust slot defined by spaced-apart slot lips is provided with a plurality of actuators of electrically deformable ... | 06/25/1996 |
| 5492448 | Rotary blades A rotary blade includes a fixed boundary layer control device extending spanwise on a lower surface adjacent the trailing edge to improve the lift/thrust characteristics of the blade especially at positive incidence angles. It was discovered that expected... | 02/20/1996 |
| 5417501 | Bearing assemblies for rotating shafts A bearing assembly for a rotating shaft includes a plurality of frangible bolts located concentrically of an axis of rotation for attaching a bearing housing radial flange portion to a support structure, each having a frangible portion located between axi... | 05/23/1995 |
| 5390543 | Method and apparatus for in-flight shake testing of an aircraft fuselage A force-generating actuator connected at or across points of a structure capable of relative motion at an exciting frequency is operated to input a predetermined load into the structure and the response of the structure is measured for analysis. In one fo... | 02/21/1995 |
| 5383133 | Integrated vibration reducing and health monitoring system for a helicopter This invention monitors data produced by a vibration reducing system relating to the vibration of a structure, compares the data against a predetermined value and provides a warning if the predetermined value is exceeded to provide an integrated vibration... | 01/17/1995 |
| 5024632 | Transmission shaft with shear section and debris retainer A transmission shaft having a shear neck portion adapted to attract failure of the shaft in the event of an overload includes an annular retainer to retain debris resulting from a failure of the shaft.... | 06/18/1991 |
| 4995931 | Method for forming components from fibre-reinforced thermoplastic materials A single stage method for forming and joining pre-consolidated sheets of fibre-reinforced thermoplastics material each having an adherent polymer layer in those areas that are to be joined comprises locating one of the sheets in a female mould tool cavity... | 02/26/1991 |
| 4975022 | Helicopter rotor blades The swept extreme tip edge of a helicopter rotor blade incorporates blade droop to reduce aerodynamic pitching moments caused by spanwise flow encountered in the fore and aft sectors of a rotor rotational disc during forward flight of a helicopter on whic... | 12/04/1990 |
