Abstract: A torch igniter includes an auxiliary fuel injector; an ignition source; and an igniter body carrying the auxiliary fuel injector and the ignition source. The igniter body includes an auxiliary combustion chamber having a side wall extending axially from a first end wall to a second end wall. In some examples, at least a portion of the side wall includes a distributed pattern of cooling apertures, with each of the cooling apertures extending obliquely from an outer surface of the side wall to an inner surface of the side wall. In some examples, the second end wall defines a fluid outlet leading to an outlet tube in fluid communication with the primary combustion chamber, at least a portion of the outlet tube including a distributed pattern of dilution apertures.

Abstract: A torch igniter includes an auxiliary fuel injector; an ignition source; and an igniter body carrying the auxiliary fuel injector and the ignition source. The igniter body includes an auxiliary combustion chamber having a side wall extending axially from a first end wall to a second end wall, the side wall defining an interior cavity between the first and second end walls. The igniter body further includes a premixing cup residing within the interior cavity including a cylindrical wall radially surrounding the auxiliary fuel injector and an auxiliary air inlet, the cylindrical wall of the premixing cup protruding axially outward relative to the first end wall of the auxiliary combustion chamber through a portion of the interior cavity to delineate a premixing zone radially inward of the cylindrical wall and a recirculation zone radially outward of the cylindrical wall.

Abstract: The flange checking device is an instrument that is configured for use in measuring the runout of a flange. The flange checking device measures lateral irregularities in the face of the flange that can cause failures in seals the flange may form. The flange checking device comprises a center shaft, a mounting structure, a measuring structure, and a measuring instrument. The mounting structure is a first adjustable structure that physically attaches the flange checking device to the flange that is to be inspected. The measuring structure is a second adjustable structure that applies the measuring instrument to the flange face. The measuring instrument measures irregularities within the flange face.

Abstract: A flange checking apparatus for performing on-site flange run-out checks on the flange surface includes a hub structure, a plurality of support legs, a measuring arm, and a transmission. The plurality of support legs mounted radially around a hub structure selectively fastens the flange checking apparatus adjacent to the flange. A measuring arm measures the flange surface for imperfections. A transmission transmits a rotational input to a rotational output which causes the measuring arm to rotate in a circular path over the flange surface. An adjustable clamp mounted terminally to a leg body of the plurality of support legs forms a friction bond with the flange. A surface variation indicator mounted terminally to the measuring arm travels over the flange and inspects microscopic variations on the flange surface. A guiding mechanism guides that measuring arm along a fixed circular path around the flange.

Abstract: Methods and devices for computer-assisted milling of a pocket region of a workpiece by computing a blend arc radius, where the blend arc radius is based on a maximal variation of a Tool Engagement Angle (TEA), and smoothing at least one offset, where the smoothing is based on the computed blend arc radius and/or a prior computed blend arc radius with a stepover.

Abstract: A method for measuring and cutting a tile. The method including: laying tiles other than the tile to be cut to define a space corresponding to the tile to be cut; arranging a plurality of pieces in the space to cover at least a portion of a surface area of the space, the plurality of pieces sticking together to form a tile blank; removing the tile blank from the space; and transferring dimensions of the tile blank to an uncut tile. Also provided is a kit for measuring a tile. The kit including a plurality of flat pieces, the plurality of flat pieces being formed in at least one of a plurality of different shapes and a plurality of different sizes, the plurality of flat pieces being capable of sticking to each other.

Abstract: Gas turbine engine generally ring-shaped dampening cone inner diameters, including those having spherical or other convex inner diameter surface profiles, are determined with a fixture including a displacement indicator having an axis of displacement in alignment with a locating pin. The dampening cone inner diameter surface is placed in contact with the locating pin on one side and a displacement point on the other side, so that the dampening cone inner diameter surface circumscribes a contact surface formed on the locating pin and the displacement point. The indicator displacement is correlated with the dampening cone inner diameter.