Abstract:
A method of manufacturing a component formed of parts capable of being separated for reassembly around another component. The process starts by taking separated, e.g., rod (3) and cap (5), forgings and coining or forging them together prior to machining. The mating surfaces of the forgings are formed with a ridge-groove or a dimple/lug-recess configuration giving them a self-locating ability. After machining, the forgings are fractured along the original division to obtain two uniquely matched surfaces that need no further processing before being reassembled, e.g, to form a connecting rod for an internal combustion engine.
Abstract:
A method of manufacturing a component formed of parts capable of being separated for reassembly around another component. The process starts by taking separate, e.g., rod (3, 3') and cap (5, 5') forgings and coining or forging them together prior to machining. The mating surfaces of the forgings are formed with a ridge-groove (9) or a dimple/lug-recess (12) configuration giving them a self-locating ability. After machining, the forgings are fractured along the original division to obtain two uniquely matched surfaces that need no further processing before being reassembled, e.g., to form a connecting rod for an internal combustion engine.
Abstract:
A motion platform for use in a simulator comprising linear slides 20, 30 providing surge and sway and a rotary table 40 providing yaw. Payload carrying platform 100 is mounted on the rotary table 40 via three bell cranks 56, 57, 58 to provide heave, pitch and roll.
Abstract:
A new route to the solvents and intermediates cyclooctanol and cyclooctanone via cyclooctyl formate is disclosed. Cyclooctyl formate may be made by acylating cyclooctene with formic acid, preferably without a catalyst, the better conversion and simplified procedure allowing the formate to be obtained at a fraction of the cost of the corresponding acetate.
Abstract:
The invention relates to apparatus which absorbs G-force resulting from an explosion event near a vehicle in order to protect the occupant from potentially dangerous levels of G-force. The apparatus has first (12) and second mounting (14) attached to the occupant seat. An absorbtion mechanism (20) in the form of a mitigating strip (22) is provided between the mounting members and an anvil (28) is provided on such that when the vehicle, and hence the first mounting member, is subjected to the explosion induced G-force, the mitigating strip is bent and pulled over the anvil. This absorbs a portion of the G-force which would otherwise be imparted on the occupant hence minimising the risk of injury to the occupant. A method of protecting a vehicle occupant from explosion induced G-force is also provided.
Abstract:
An electron amplifier device is provided which comprises a substrate (10) having a plurality of vias extending between opposing faces. An electrically conductive layer (20) is formed on at least one of the faces, and a secondary electron emission layer (22) is formed on the conductive layer.
Abstract:
An active vibration isolation mount is provided for mounting a first member (1) to a second member (2) and for reducing the transmission of vibrations from the first member (1) to the second member (2). A spring arrangement (3) is arranged between the first and second members. A sensor senses vibrations in the first member. A force actuator (4) applies a controlling force to the second member in response to vibrations sensed by the sensor. The spring arrangement is adapted to provide a delay between the first and second members equal to or greater than a delay in the application of the controlling force by the force actuator (4) in response to the vibrations in the first member. Also a passive mount is provided for mounting a first member (1000) to a second member (1001) and for reducing the transmission of vibrations from the first member to the second member.
Abstract:
The electron multiplier array consists of a plurality of multiplier channels (1) with each channel generally comprising a substrate (2), an anode (5) and a series of stacked insulation layers (7) and dynode layers (11) describing the walls of the channel. The electron multiplier array is robust and reduces the extent of the correction required for variations in performance between channels.
Abstract:
An optical micro sensor (1) for measuring one or more environmental parameters, such as pressure and temperature, through the modification of incident radiation. The sensor (1) is fabricated using MEMS technology and is adapted to receive an optical fibre (40) which communicates radiation to and from the micro sensor (1). The sensor (1) has an environmentally-sensitive element (4) which modifies the incident radiation communicated by the optical fibre (40). The modified radiation is communicated back along the optical fibre (40) and provides information regarding the environmental conditions surrounding the sensor (1). The pressure sensor is provided with a Fabry Perot cavity (3) in a first surface of a silicon wafer (2). The cavity is covered by a reflector at the environmentally-sensitive element (4). The diameter of the channel (7) holding the optical fibre (40) is greater than the diameter of the cavity (3). The temperature sensor is provided with luminescent material at the element (4). Also, a method of securing an optical fibre to a silicon block is claimed.
Abstract:
An optical micro sensor (1) for measuring one or more environmental parameters, such as pressure and temperature, through the modification of incident radiation. The sensor (1) is fabricated using MEMS technology and is adapted to receive an optical fibre (40) which communicates radiation to and from the micro sensor (1). The sensor (1) has an environmentally-sensitive element (4) which modifies the incident radiation communicated by the optical fibre (40). The modified radiation is communicated back along the optical fibre (40) and provides information regarding the environmental conditions surrounding the sensor 1.