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公开(公告)号：US12202599B2
公开(公告)日：2025-01-21
申请号：US17989908
申请日：2022-11-18
Applicant: Textron Innovations Inc.
Inventor： Eric Stephen Olson , Ezra Mike Tiprigan
IPC: B64C29/00 , F16H57/04 , F16K11/065 , F16K99/00 , F16N25/02
Abstract: A drive system for an aircraft includes a first gearbox assembly and a second gearbox assembly that is in mechanical communication with the first gearbox assembly. A first pressurized lubrication system is configured to circulate a first lubricant through the first gearbox assembly. A second pressurized lubrication system is configured to circulate a second lubricant through the second gearbox assembly. An emergency lubrication system is configured to autonomously supply a portion of the first lubricant to the second gearbox assembly responsive to a loss of pressure in the second pressurized lubrication system. The emergency lubrication system is also configured to autonomously supply a portion of the second lubricant to the first gearbox assembly responsive to a loss of pressure in the first pressurized lubrication system.
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公开(公告)号：US20210214076A1
公开(公告)日：2021-07-15
申请号：US16743472
申请日：2020-01-15
Applicant: Textron Innovations Inc.
Inventor： Eric Stephen Olson
Abstract: A propulsion assembly includes a rotor assembly, a mast coupled to the rotor assembly and a bull gear coupled to the mast. The bull gear is subject to radial and axial loads. The propulsion assembly includes a flexured standpipe extending through the bull gear and a ball bearing including inner and outer races interposed between the bull gear and the flexured standpipe. The ball bearing is configured to absorb axial loads from the bull gear. The bull gear is rotatably coupled to the flexured standpipe via the ball bearing. The flexured standpipe flexes in response to radial loads from the bull gear.
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公开(公告)号：US12049304B2
公开(公告)日：2024-07-30
申请号：US17861702
申请日：2022-07-11
Applicant: Textron Innovations Inc.
Inventor： Eric Stephen Olson
CPC classification number: B64C27/12 , B64D35/08 , F16D41/04 , B64D27/026 , F16D2041/0603
Abstract: A tail rotor isolation system for rotorcraft includes a secondary engine, first and second freewheeling units, an isolation assembly and a tail rotor system. The secondary engine is coupled to the input race of the first freewheeling unit. A main rotor system is coupled to the output race of the second freewheeling unit. The isolation assembly is coupled to the output race of the first freewheeling unit and has a fully engaged position coupling the input and output races of the second freewheeling unit and a partially engaged position coupled to the input race but decoupled from the output race of the second freewheeling unit. The tail rotor system is coupled to the input race of the second freewheeling unit such that in the partially engaged position of the isolation assembly, the overrunning mode of the second freewheeling unit isolates the tail rotor system from the main rotor system.
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公开(公告)号：US20240166345A1
公开(公告)日：2024-05-23
申请号：US17989908
申请日：2022-11-18
Applicant: Textron Innovations Inc.
Inventor： Eric Stephen Olson , Ezra Mike Tiprigan
CPC classification number: B64C29/0033 , F16H57/0442
Abstract: A drive system for an aircraft includes a first gearbox assembly and a second gearbox assembly that is in mechanical communication with the first gearbox assembly. A first pressurized lubrication system is configured to circulate a first lubricant through the first gearbox assembly. A second pressurized lubrication system is configured to circulate a second lubricant through the second gearbox assembly. An emergency lubrication system is configured to autonomously supply a portion of the first lubricant to the second gearbox assembly responsive to a loss of pressure in the second pressurized lubrication system. The emergency lubrication system is also configured to autonomously supply a portion of the second lubricant to the first gearbox assembly responsive to a loss of pressure in the first pressurized lubrication system.
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公开(公告)号：US11708155B2
公开(公告)日：2023-07-25
申请号：US17516093
申请日：2021-11-01
Applicant: Textron Innovations Inc.
Inventor： Douglas Andrew Goodwin , David Andrew Prater , Eric Stephen Olson , David Bryan Roberts , Chia-Wei Su , Michael David Trantham , Charles Eric Covington
CPC classification number: B64C27/12 , B64D35/08 , F16D41/04 , B64D2027/026 , F16D2041/0603
Abstract: A multimode clutch assembly is positioned in a powertrain of a rotorcraft. The clutch assembly includes a freewheeling unit having a driving mode in which torque applied to the input race is transferred to the output race and an overrunning mode in which torque applied to the output race is not transferred to the input race. A bypass assembly has an engaged position that couples the input and output races of the freewheeling unit. An actuator assembly shifts the bypass assembly between engaged and disengaged positions. An engagement status sensor is configured to determine the engagement status of the bypass assembly. In the disengaged position, the overrunning mode of the freewheeling unit is enabled such that the clutch assembly is configured for unidirectional torque transfer. In the engaged position, the overrunning mode of the freewheeling unit is disabled such that the clutch assembly is configured for bidirectional torque transfer.
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Patent Agency Ranking
公开(公告)号：US20230192277A1
公开(公告)日：2023-06-22
申请号：US17861702
申请日：2022-07-11
Applicant: Textron Innovations Inc.
Inventor： Eric Stephen Olson
CPC classification number: B64C27/12 , B64D35/08 , F16D41/04 , F16D2041/0603
Abstract: A tail rotor isolation system for rotorcraft includes a secondary engine, first and second freewheeling units, an isolation assembly and a tail rotor system. The secondary engine is coupled to the input race of the first freewheeling unit. A main rotor system is coupled to the output race of the second freewheeling unit. The isolation assembly is coupled to the output race of the first freewheeling unit and has a fully engaged position coupling the input and output races of the second freewheeling unit and a partially engaged position coupled to the input race but decoupled from the output race of the second freewheeling unit. The tail rotor system is coupled to the input race of the second freewheeling unit such that in the partially engaged position of the isolation assembly, the overrunning mode of the second freewheeling unit isolates the tail rotor system from the main rotor system.
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公开(公告)号：US11338916B2
公开(公告)日：2022-05-24
申请号：US16014441
申请日：2018-06-21
Applicant: Textron Innovations Inc.
Inventor： Colton Gilliland , Jeffrey Williams , Michael E. Rinehart , James Kooiman , Mark Przybyla , Clegg Smith , Eric Stephen Olson , George Ryan Decker , David Russell Bockmiller
Abstract: A tiltrotor aircraft includes a propulsion system with a fixed engine and a rotatable proprotor. The engine is located below the wing of the tiltrotor aircraft, and the rotatable proprotor assembly is mounted on the top surface of the wing. The engine and proprotor assembly are connected via a series of one or more gearboxes that route the engine output from the engine to the proprotor.
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公开(公告)号：US11174015B2
公开(公告)日：2021-11-16
申请号：US17063712
申请日：2020-10-05
Applicant: Textron Innovations Inc.
Inventor： Douglas Andrew Goodwin , David Andrew Prater , Eric Stephen Olson , David Bryan Roberts , Chia-Wei Su , Michael David Trantham , Charles Eric Covington
Abstract: A multimode clutch assembly is positioned in a powertrain of a rotorcraft. The clutch assembly includes a freewheeling unit having a driving mode in which torque applied to the input race is transferred to the output race and an overrunning mode in which torque applied to the output race is not transferred to the input race. A bypass assembly has an engaged position that couples the input and output races of the freewheeling unit. An actuator assembly shifts the bypass assembly between engaged and disengaged positions. An engagement status sensor is configured to determine the engagement status of the bypass assembly. In the disengaged position, the overrunning mode of the freewheeling unit is enabled such that the clutch assembly is configured for unidirectional torque transfer. In the engaged position, the overrunning mode of the freewheeling unit is disabled such that the clutch assembly is configured for bidirectional torque transfer.
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公开(公告)号：US20240343386A1
公开(公告)日：2024-10-17
申请号：US18299609
申请日：2023-04-12
Applicant: Textron Innovations Inc.
Inventor： Eric Stephen Olson , Bradford Jeffrey Ekstrom
IPC: B64C27/12
Abstract: A drive system has a gearbox, comprising a passage therethrough, a coupling shaft disposed at least partially within the passage and a first coupling carried by a first end of the coupling shaft. The first coupling is configured to accommodate misalignment. The drive system also has a second coupling carried by a second end of the coupling shaft. The second coupling is also configured to accommodate misalignment.
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公开(公告)号：US20220212783A1
公开(公告)日：2022-07-07
申请号：US17516093
申请日：2021-11-01
Applicant: Textron Innovations Inc.
Inventor： Douglas Andrew Goodwin , David Andrew Prater , Eric Stephen Olson , David Bryan Roberts , Chia-Wei Su , Michael David Trantham , Charles Eric Covington
Abstract: A multimode clutch assembly is positioned in a powertrain of a rotorcraft. The clutch assembly includes a freewheeling unit having a driving mode in which torque applied to the input race is transferred to the output race and an overrunning mode in which torque applied to the output race is not transferred to the input race. A bypass assembly has an engaged position that couples the input and output races of the freewheeling unit. An actuator assembly shifts the bypass assembly between engaged and disengaged positions. An engagement status sensor is configured to determine the engagement status of the bypass assembly. In the disengaged position, the overrunning mode of the freewheeling unit is enabled such that the clutch assembly is configured for unidirectional torque transfer. In the engaged position, the overrunning mode of the freewheeling unit is disabled such that the clutch assembly is configured for bidirectional torque transfer.
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