Split-torque gear box
AssigneeSikorsky Aircraft Corporation
InventorYuriy Gmirya
Life of this patent
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Abstract
A split torque gearbox system provides a multiple path, three stage power gear train that transmits torque from a high-speed engine to a low speed output shaft, while providing equal gear load distribution with a floating pinion in the second stage of reduction. The number of the split modules in the gearbox depends on gearbox configuration, number of high speed input shafts, and transmitted power. The split modules are located around a last stage output gear that combines power from each module and transmits the power to an output such as a main rotor system.
Claims16
A split torque gearbox system comprising:
- a first gear mounted for rotation about a first gear axis of rotation;
- a second gear mounted for rotation about a second gear axis of rotation;
- a floating gear mounted to a pinion shaft and driven by said pinion shaft, said floating gear mounted for rotation about a floating gear axis of rotation, said floating gear meshed with said first gear and said second gear;
- and
- wherein said floating gear axis of rotation, said first gear axis of rotation, and said second gear axis of rotation are located along a common line.
A split torque gearbox system for a rotary wing aircraft comprising:
- an input shaft including at least one input shaft gear arranged along the input shaft;
- two face gears driven by the at least one input shaft, the two face gears disposed on generally opposite sides of the input shaft;
- a first and second pair of spur gears;
- two pinion gears driven by a respective one of the two face gears, each of the pinion gears connected to a respective one of the two face gears by way of a radially unsupported pinion shaft, each of the pinion gears engaging a respective one of the first and second pair of spur gears.
Dependencies are inferred from the claim text.