Abstract: A diode pack housing for a rotating rectifier assembly can include a body having an interior surface defining an interior cavity open on a first end and configured to contain a diode pack and a plurality of bus bar channels defined axially on or in the inner surface in the interior cavity. The plurality of bus bar channels can be five or less bus bar channels.

Abstract: A diode pack comprises a plurality of diodes seated in an assembly within a housing. The diode pack also includes a plurality of radial studs extending from an axial end of the housing relative to an axis of rotation extending through the housing. Each of the radial studs is electrically connected to a respective diode within the assembly. The diode pack further includes a center stud captured within the housing between the assembly and the housing and along the axis of rotation. A method of making a diode pack includes forming a housing of an electrically insulate material, removing a portion of the housing along an axis of rotation of the housing, mounting a center stud in the housing where the portion was removed, and assembling an assembly of diodes into the housing.

Abstract: An input shaft includes an annular main shaft extending along a longitudinal axis with an internal bore configured for fluid flow through the annular main shaft. A generator spline is included on an exterior surface of a first end of the main shaft. A gearbox spline is included on an exterior surface of a second end of the main shaft opposite the first end. At least one orifice is defined through the main shaft from the internal bore to the exterior surface of the second end of the main shaft for flow of fluid from the internal bore to the exterior surface for cooling and lubrication.

Abstract: A terminal assembly includes a terminal block of a dielectric material defining a plurality of bores therethrough. A respective terminal contact of an electrically conductive material is seated in each of the respective bores. The terminal contact defines a longitudinal axis therethrough with a terminal bore defined through the terminal contact along the longitudinal axis. A divider wall separates the terminal bore into a solder cup for a lead wire on an interior side of the terminal bore, and a lug receptacle on an exterior side of the terminal bore.

Abstract: A housing for a gas turbine engine accessory includes an enclosure having a drive end with an opening and a closure. The closure is seated in the opening, defines therethrough a shaft aperture and has a v-band flange extending about a periphery of the closure to limit load carried by the enclosure when the engine accessory is mounted to an accessory gearbox mount in a cantilevered arrangement. Engine accessories for gas turbine engines and mounting arrangements for gas turbine engine accessories are also described.

Abstract: An input shaft includes an annular main shaft extending along a longitudinal axis with an internal bore configured for fluid flow through the annular main shaft. A generator spline is included on an exterior surface of a first end of the main shaft. A gearbox spline is included on an exterior surface of a second end of the main shaft opposite the first end. At least one orifice is defined through the main shaft from the internal bore to the exterior surface of the second end of the main shaft for flow of fluid from the internal bore to the exterior surface for cooling and lubrication.

Abstract: An input shaft includes an annular main shaft extending along a longitudinal axis with an internal bore configured for fluid flow through the annular main shaft. A generator spline is included on an exterior surface of a first end of the main shaft. A gearbox spline is included on an exterior surface of a second end of the main shaft opposite the first end. At least one orifice is defined through the main shaft from the internal bore to the exterior surface of the second end of the main shaft for flow of fluid from the internal bore to the exterior surface for cooling and lubrication.

Abstract: A diode pack comprises a plurality of diodes seated in an assembly within a housing. The diode pack also includes a plurality of radial studs extending from an axial end of the housing relative to an axis of rotation extending through the housing. Each of the radial studs is electrically connected to a respective diode within the assembly. The diode pack further includes a center stud captured within the housing between the assembly and the housing and along the axis of rotation. A method of making a diode pack includes forming a housing of an electrically insulate material, removing a portion of the housing along an axis of rotation of the housing, mounting a center stud in the housing where the portion was removed, and assembling an assembly of diodes into the housing.

Abstract: A diode pack housing for a rotating rectifier assembly can include a body having an interior surface defining an interior cavity open on a first end and configured to contain a diode pack and a plurality of bus bar channels defined axially on or in the inner surface in the interior cavity. The plurality of bus bar channels can be five or less bus bar channels.

Abstract: A terminal assembly includes a terminal block of a dielectric material defining a plurality of bores therethrough. A respective terminal contact of an electrically conductive material is seated in each of the respective bores. The terminal contact defines a longitudinal axis therethrough with a terminal bore defined through the terminal contact along the longitudinal axis. A divider wall separates the terminal bore into a solder cup for a lead wire on an interior side of the terminal bore, and a lug receptacle on an exterior side of the terminal bore.

Abstract: A terminal assembly includes a terminal block of a dielectric material defining a plurality of bores therethrough. A respective terminal contact of an electrically conductive material is seated in each of the respective bores. The terminal contact defines a longitudinal axis therethrough with a terminal bore defined through the terminal contact along the longitudinal axis. A divider wall separates the terminal bore into a solder cup for a lead wire on an interior side of the terminal bore, and a lug receptacle on an exterior side of the terminal bore.

Abstract: An input shaft includes an annular main shaft extending along a longitudinal axis with an internal bore configured for fluid flow through the annular main shaft. A generator spline is included on an exterior surface of a first end of the main shaft. A gearbox spline is included on an exterior surface of a second end of the main shaft opposite the first end. At least one orifice is defined through the main shaft from the internal bore to the exterior surface of the second end of the main shaft for flow of fluid from the internal bore to the exterior surface for cooling and lubrication.

Abstract: A terminal assembly includes a terminal block of a dielectric material defining a plurality of bores therethrough. A respective terminal contact of an electrically conductive material is seated in each of the respective bores. The terminal contact defines a longitudinal axis therethrough with a terminal bore defined through the terminal contact along the longitudinal axis. A divider wall separates the terminal bore into a solder cup for a lead wire on an interior side of the terminal bore, and a lug receptacle on an exterior side of the terminal bore.

Abstract: Generator housings for generators of aircraft are provided. The generator housings include a mounting pad at a first end, the generator housing extending to a second end, and a base arranged to connect to an electronics module. The generator housing defines a generator cavity and a flow path to supply a working fluid through the generator housing, the flow path extending between an inlet formed in the mounting pad and at least one outlet formed in the mounting pad. One or more electronics flow ports enable fluid connection between the flow path within the generator housing and the electronic module when connected and one or more inductor ports enable fluid connection between the flow path within the generator housing and one or more inductors when mounted to the generator housing.

Abstract: A housing for a gas turbine engine accessory includes an enclosure having a drive end with an opening and a closure. The closure is seated in the opening, defines therethrough a shaft aperture and has a v-band flange extending about a periphery of the closure to limit load carried by the enclosure when the engine accessory is mounted to an accessory gearbox mount in a cantilevered arrangement. Engine accessories for gas turbine engines and mounting arrangements for gas turbine engine accessories are also described.

Abstract: Generator housings for generators of aircraft are provided. The generator housings include a mounting pad at a first end, the generator housing extending to a second end, and a base arranged to connect to an electronics module. The generator housing defines a generator cavity and a flow path to supply a working fluid through the generator housing, the flow path extending between an inlet formed in the mounting pad and at least one outlet formed in the mounting pad. One or more electronics flow ports enable fluid connection between the flow path within the generator housing and the electronic module when connected and one or more inductor ports enable fluid connection between the flow path within the generator housing and one or more inductors when mounted to the generator housing.

Abstract: An integrated drive generator includes an input shaft and an input drive gear connected to the input shaft. The integrated drive generator also includes an input driven gear meshed with the input drive gear. The integrated drive generator also includes a hydraulic speed trimming device. The hydraulic speed trimming device includes an input shaft connected to the input driven gear, an output shaft, an accessory drive gear connected to the output shaft, and an output ring gear connected to the output shaft. The input driven gear, the accessory drive gear, and the output ring gear are coaxial and disposed proximate a first end of the hydraulic speed trimming device. The integrated drive generator also includes a pump assembly with a pump drive shaft and a pump gear connected to the pump drive shaft and meshed with the accessory drive gear.

Abstract: An integrated drive generator includes an input shaft and an input drive gear connected to the input shaft. The integrated drive generator also includes an input driven gear meshed with the input drive gear. The integrated drive generator also includes a hydraulic speed trimming device. The hydraulic speed trimming device includes an input shaft connected to the input driven gear, an output shaft, an accessory drive gear connected to the output shaft, and an output ring gear connected to the output shaft. The input driven gear, the accessory drive gear, and the output ring gear are coaxial and disposed proximate a first end of the hydraulic speed trimming device. The integrated drive generator also includes a pump assembly with a pump drive shaft and a pump gear connected to the pump drive shaft and meshed with the accessory drive gear.

Abstract: A cover with a center axis for a pump assembly includes a plate. A center hole is formed in the plate and positioned on the center axis of the cover. A first edge of the plate extends between a first lobe and a second lobe, a second edge of the plate extends between the first lobe and a third lobe, and a third edge of the plate extends between the second lobe and the third lobe. The first, second, and third lobes each comprise a mounting boss with a thru-hole.

Abstract: A pump sleeve includes a tubular body extending from a first end to a second end along a center axis. A first hole is formed in the tubular body and is positioned axially on the tubular body between the first end and the second end. A second hole is formed in the tubular body, the second hole being axially aligned on the tubular body with the first hole. A third hole is formed in the tubular body and is positioned axially on the tubular body between the first end and the first hole. A fourth hole is formed in the tubular body, the fourth hole being axially aligned on the tubular body with the third hole.