Split torque gearbox for rotary wing aircraft with translational thrust system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16H-035/18
F16H-035/00
B64D-035/06
B64D-035/00
출원번호
US-0140762
(2005-05-31)
등록번호
US-7413142
(2008-08-19)
발명자
/ 주소
Gmirya,Yuriy
출원인 / 주소
Sikorsky Aircraft Corporation
대리인 / 주소
Carlson, Gaskey & Olds
인용정보
피인용 횟수 :
6인용 특허 :
3
초록▼
A gearbox of a high speed compound rotary-wing aircraft includes a main module, an input module and a translational thrust module. The input module receives power from the engines to drive a dual, contra-rotating, coaxial main rotor system and a translational thrust system which provides significan
A gearbox of a high speed compound rotary-wing aircraft includes a main module, an input module and a translational thrust module. The input module receives power from the engines to drive a dual, contra-rotating, coaxial main rotor system and a translational thrust system which provides significant translational thrust generally parallel to an aircraft longitudinal axis. Each of a multiple of engine drives the input module such that power is distributed to the main module and the translational thrust module. The gearbox provides a lightweight solution, since each module need only transmit a required fraction of available engines power.
대표청구항▼
What is claimed is: 1. A split torque gearbox system comprising: an input module; a main module in meshing engagement with said input module, said main module including a first main gear and a second main gear for coaxial counter rotation about a rotor axis of rotation; and a translational thrust m
What is claimed is: 1. A split torque gearbox system comprising: an input module; a main module in meshing engagement with said input module, said main module including a first main gear and a second main gear for coaxial counter rotation about a rotor axis of rotation; and a translational thrust module in meshing engagement with said input module, said translational thrust module including a main translational gear which rotates about a transmission shaft axis of rotation generally transverse to said rotor axis of rotation. 2. The split torque gearbox system as recited in claim 1, wherein said first main gear mounts a first rotor shaft of a first rotor system and said second main gear rotates a second rotor shaft of a second rotor system. 3. The split torque gearbox system as recited in claim 2, wherein said first rotor shaft is mounted at least partially within said second rotor shaft. 4. The split torque gearbox system as recited in claim 1, further comprising a first spur gear and a second spur gear mounted to a common spur gear shaft, said first spur gear meshingly engaged with said first main gear along an outer periphery thereof relative said rotor axis of rotation and said second spur gear meshingly engages with said first main gear about an inner periphery thereof relative to said rotor axis of rotation to provide contra-rotation between said first main gear and said second main gear. 5. The split torque gearbox system as recited in claim 4, wherein said common spur gear shaft rotates about an axis of rotation having a component generally parallel to said rotor axis of rotation. 6. The split torque gearbox system as recited in claim 5, further comprising a spiral bevel gear mounted to said common spur gear shaft, said spiral bevel gear driven by an input shaft which extends from said input module. 7. The split torque gearbox system as recited in claim 6, wherein said input shaft rotates about an input axis of rotation generally transverse to said rotor axis of rotation. 8. The split torque gearbox system as recited in claim 6, further comprising a gear which drives said input shaft, said input shaft gear in meshing engagement with said main translational gear through an intermediary gear. 9. The split torque gearbox system as recited in claim 1, wherein said main translational gear drives a transmission shaft which drives a sun gear in meshing engagement with a multitude of planet idler gears. 10. The split torque gearbox system as recited in claim 9, further comprising a spur gear with inwardly facing gear teeth revolves around said multitude of planet idler gears. 11. The split torque gearbox system as recited in claim 10, wherein said spur gear with inwardly facing gear teeth drive a translational propulsion system about a translational propulsion system axis. 12. The split torque gearbox system as recited in claim 11, wherein said translational propulsion system includes a pusher propeller. 13. The split torque gearbox system as recited in claim 11, wherein said translational propulsion system includes a ducted fan. 14. A split torque gearbox system for a high speed compound rotary-wing aircraft comprising: an input module having a first spur gear meshingly engaged with a second spur gear, said second spur gear meshingly engaged with a third spur gear, said first spur gear rotationally mounted about a first axis of rotation, a second spur gear mounted about a second axis of rotation, and said third spur gear mounted about a third axis of rotation, said first, second and third axes of rotation being generally transverse to a rotor axis of rotation; a main module in meshing engagement with said input module, said main module including a first main gear and a second main gear for coaxial counter rotation about said rotor axis of rotation, said first main gear and said second main gear driven by said second spur gear; and a translational thrust module in meshing engagement with said input module, said translational thrust module including a main translational gear which rotates about a transmission shaft axis of rotation generally transverse said rotor axis of rotation, said main translational gear in meshing engagement with said third spur gear. 15. The split torque gearbox system as recited in claim 14, wherein said first main gear mounts a first rotor shaft of a first rotor system and said second main gear rotates a second rotor shaft of a second rotor system. 16. The split torque gearbox system as recited in claim 14, further comprising an engine which drives said first spur gear. 17. The split torque gearbox system as recited in claim 14, further comprising a first main module spur gear and a second main module spur gear mounted to a common spur gear shaft, said first main module spur gear meshingly engaged with said first main gear along an outer periphery thereof relative said rotor axis of rotation and said second main module spur gear meshingly engages with said first main gear about an inner periphery thereof relative to said rotor axis of rotation to provide contra-rotation between said first main gear and said second main gear. 18. The split torque gearbox system as recited in claim 17, wherein said common spur gear shaft rotates about an axis of rotation having a component generally parallel to said rotor axis of rotation. 19. The split torque gearbox system as recited in claim 18, further comprising a spiral bevel gear mounted to said common spur gear shaft, said spiral bevel gear driven by an input shaft which extends from said input module, said input shaft driven by said second spur gear. 20. A split torque gearbox system comprising: an input module; a main module in meshing engagement with said input module through an input shaft, said main module including a first main gear and a second main gear for coaxial counter rotation about a rotor axis of rotation, said input shaft rotatable about an input shaft axis of rotation generally transverse to said rotor axis of rotation; a first main module gear and a second main module gear mounted to a common spur gear shaft which rotates about a shaft axis of rotation generally parallel to said rotor axis of rotation, said first main module gear meshingly engaged with said first main gear along an outer periphery thereof relative said rotor axis of rotation and said second main module gear meshingly engages with said second main gear about an inner periphery thereof relative to said rotor axis of rotation to provide contra-rotation between said first main gear and said second main gear; and a translational thrust module in meshing engagement with said input module, said translational thrust module rotates a transmission shaft about a transmission shaft axis of rotation generally transverse said rotor axis of rotation.
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이 특허에 인용된 특허 (3)
Mateus Ernesto (P.O. Box 5149 Quito ECX), Helicopter flight control and transmission system.
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