摘要:
An accessory system includes an accessory gearbox which includes a geartrain and a 2-Pole generator integrally mounted with the accessory gearbox such that a drive gear of the generator is in meshing engagement with the geartrain, containing a shear section, disconnect mechanism, and torsional compliance.
摘要:
A generator includes a drive gear mounted to a main rotor shaft though a drive gear bearing and an input jaw plate keyed to the drive gear for rotation therewith, the input jaw plate defines input jaws which selectively mesh with the disconnect jaws, the disconnect shaft axially movable in response to a disconnect system which axially separates input jaws and the disconnect jaws to permit relative rotation between a main rotor shaft and the drive gear through the drive gear bearing.
摘要:
An example gear arrangement includes a gearbox shaft and a journal shaft. The journal shaft establishes an opening that receives an end portion of the gearbox shaft. The gearbox shaft is configured to rotate the journal shaft. The journal shaft is configured to selectively rotatably couple with another shaft. The journal shaft is allowed to align to the bearing surface while the gearbox shaft allows for misalignment between the accessory and gearbox drive.
摘要:
A generator includes a rotor to be driven to rotate and generate electricity and a housing receiving the rotor. An oil supply includes an oil inlet port and an oil outlet port. A pressure regulating valve regulates the flow of oil from the inlet port to the outlet port. The pressure regulating valve includes a valve sleeve mounted within the housing. The valve sleeve extends into a bore within the housing. A valve spool is mounted within the valve sleeve. The valve sleeve has a flange abutting an outer face of the housing. Bolts tighten the flange against the housing. An inner end of the valve sleeve extends radially inwardly to form a ledge. The ledge is spaced away from an inner face of the housing. A valve sleeve, a sense piston and a valve spool are also disclosed and claimed.
摘要:
An example method of reducing loads on a connection shaft includes disengaging a connection shaft from a motor-generator such that the connection shaft is not rotatably coupled to the motor-generator. The method communicates a fluid away from the motor-generator through a communication path established within the connection shaft. An example turbomachine connection shaft is configured to selectively rotatably couple a turbomachine rotor and a motor-generator. The connection shaft establishes a communication path that selectively vents the motor-generator.
摘要:
A turbine engine includes low and high pressure spools. A high power take-off shaft is coupled to the high spool. An auxiliary component, such as a generator, is configured to be driven by the high power take-off shaft at a first speed. The low spool, in part, drives the auxiliary component, for example, by interconnecting the high power take-off shaft to a lower power take-off shaft through a speed summing gearbox. The gearbox drives the auxiliary component and increases the rotational speed of the auxiliary component from the first speed to the second speed. The low power take-off shaft also drives another generator, in one example. The turbine engine can be started by the low pressure generator, for example, in response to a command from a controller, which transforms the generator into a starter motor.
摘要:
A resistor pack assembly includes a first mounting plate, a second mounting plate, a cylindrical suppression resistor, and a cylindrical cover. The first mounting plate has a circular face, a first connection terminal, and a second connection terminal. The second mounting plate has a circular face, a third connection terminal and a fourth connection terminal. The cylindrical suppression resistor has a first flat surface and a second flat surface opposite the first flat surface, and is located between the first mounting plate and the second mounting plate, wherein the first flat surface contacts the circular face of the first mounting plate and the second flat surface contacts the circular face of the second mounting plate. The cylindrical cover has an inner diameter aperture, wherein the first mounting plate, the second mounting plate, and the cylindrical suppression resistor are located within the inner diameter aperture of the cylindrical cover.
摘要:
An arrangement and method for driving a turbomachine having a rotor is provided. The arrangement includes an input shaft rotationally coupled to the rotor. A motor generator device has a motor mode of operation and a generator mode of operation. A differential gear device having a first portion rotationally coupled to the input shaft and a second portion rotationally coupled to the motor generator device. A hydraulic assembly is rotationally coupled between the differential gear and the input shaft. The hydraulic assembly has a plurality of pistons and a pair of wobbler plates. A controller is operably coupled to the input shaft, the motor generator device and the hydraulic assembly, wherein the controller includes a processor that is responsive to executable instructions when executed on the processor for moving the pair of wobbler plates to a first position during a motor mode of operation.
摘要:
An example mechanical transmission assembly receives an input rotating at a first rotational speed and provides an output rotating at a second rotational speed. The mechanical transmission selectively adjusts the second rotational speed. The input is provided by a prime mover. The output is provided to a hydraulic pump assembly that rotatably drives a motor-generator.
摘要:
A rotating rectifier includes diode subassemblies that each have an AC contact between two diodes, held in place by a spring clip or interference fit between an inner DC bus and an outer DC bus. The outer DC bus can also act as a housing and heat sink. Diodes and resistors are distributed around the rotating rectifier. Zener diodes can be included in series with the resistors to provide further protection to the diodes to ensure proper operation of the rectifier.