Abstract: A balanced rotor component for a gas turbine engine having a aerofoil with a root and an rotor with an axial aerofoil root slot. The aerofoil root has a cavity which holds a balance weight. The cavity is open along at least one wall and the balance weight is spaced from the slot wall to minimise stress concentrations.

Abstract: A balanced rotor component for a gas turbine engine having a aerofoil with a root and an rotor with an axial aerofoil root slot. The aerofoil root has a cavity which holds a balance weight. The cavity is open along at least one wall and the balance weight is spaced from the slot wall to minimise stress concentrations.

Abstract: One embodiment of the present invention provides a module including a primary substrate defining a base of the module, wherein the primary substrate is provided with a plurality of vias for electrical connection to a photodetector located within an interior portion of the module; a side wall member joined to the primary substrate to form side walls of the module and to define the interior portion of the module; a secondary substrate positioned within the interior portion of the module, the photodetector being mounted on the secondary substrate; an optical fiber guide extending into the interior portion of the module from outside the module, the optical fiber being arranged to receive an optical fiber and to position the optical fiber so that light emerging from the optical fiber impinges upon the photodetector; and a lid joined to the side wall member to enclose the interior portion of the module.

Abstract: One embodiment of the present invention provides a module including a primary substrate defining a base of the module, wherein the primary substrate is provided with a plurality of vias for electrical connection to a photodetector located within an interior portion of the module; a side wall member joined to the primary substrate to form side walls of the module and to define the interior portion of the module; a secondary substrate positioned within the interior portion of the module, the photodetector being mounted on the secondary substrate; an optical fiber guide extending into the interior portion of the module from outside the module, the optical fiber being arranged to receive an optical fiber and to position the optical fiber so that light emerging from the optical fiber impinges upon the photodetector; and a lid joined to the side wall member to enclose the interior portion of the module.

Abstract: A system and apparatus for packaging a laser diode is provided according to the present invention. It includes a solid structure having a first cavity, wherein the first cavity receives a fiber pipe with optical fiber, which is aligned to the laser diode. The solid structure also includes a recess that receives the fiber pipe; and a step for receiving a sealing ring. The solid structure is multi-layered and may be manufactured from ceramic material, beryllium oxide or aluminum nitride. The solid structure includes a second cavity that accommodates a fiber alignment mechanism; a sub-mount on which the laser diode is placed; and/or heat sink used for conducting heat from the laser diode.

Abstract: A system and process is provided for packaging optical-electronic components used in fiber-optics networks. A top lid with an opening covers all the components of the optical-electronic package. A fiber boot with a groove is provided, wherein the opening in the top lid mates with the fiber boot groove. The fiber boot groove is located between plural shoulders. An optical fiber passes through an opening in the fiber boot and is firmly held within the fiber boot.

Abstract: A vertical shaft furnace for melting scrap metal, particularly copper scrap, uses one or more burners operated superstoichiometrically in order to provide excess oxygen to react with a waste gas stream passing up through the copper scrap thereby reducing the amount of carbon dioxide and visual contaminants in the waste gas stream.