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公开(公告)号：US20210253266A1
公开(公告)日：2021-08-19
申请号：US16791139
申请日：2020-02-14
Applicant: Hamilton Sundstrand Corporation
Inventor： Timothy Scott Konicek , Stuart T. Gerger , Stephen Michael Bortoli
Abstract: A ram air turbine (RAT) restow system includes an actuator assembly with a piston interposed between an upper fluid compartment and a lower fluid compartment. The actuator assembly is configured to selectively move the piston between a deployed position and a stowed position. A hydraulic restow circuit is interposed between the actuator assembly and a hydraulic fluid system that is configured to output fluid. The hydraulic restow circuit includes a restow valve configured to operate in a first position that establishes a first fluid path to deliver the fluid to the upper fluid compartment and a second position that establishes a second fluid path to deliver the fluid to the lower fluid compartment.
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公开(公告)号：US11022099B2
公开(公告)日：2021-06-01
申请号：US16363987
申请日：2019-03-25
Applicant: Hamilton Sundstrand Corporation
Inventor： Stephen Michael Bortoli , Daniel Kuehn
IPC: F01D25/04 , F03D7/02 , F03D9/25 , F03D9/32 , F03D80/70 , B64D41/00 , F03D1/00 , F03D1/06 , F16C27/04 , F16C27/06 , F16C35/067
Abstract: A ram air turbine (RAT) can include a housing and a turbine shaft configured to connect to one or more turbine blades and be turned by the one or more blades. The turbine shaft can be disposed in the housing to rotate relative to the housing along a rotational axis. The RAT can include a first bearing and a second bearing mounted between the turbine shaft and the housing to allow the turbine shaft to rotate relative to the housing. The RAT can include a whirl reduction system configured to dampen or eliminate whirl around the rotational axis.
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公开(公告)号：US10961917B2
公开(公告)日：2021-03-30
申请号：US16536938
申请日：2019-08-09
Applicant: Hamilton Sundstrand Corporation
Inventor： Aaron M. Finke , Stephen Michael Bortoli , Jonathan C. Dell
Abstract: A turbomachine dual spool transmission system can include a direct drive assembly configured to selectively allow bypassing of a dual spool differential combination output to allow selective direct engagement of a low pressure spool to directly drive a rotational member or to be directly driven by the rotational member. The system can include the dual spool differential. The dual spool differential can include a gear assembly configured to combine a low pressure spool input and a high pressure spool input into a combination output to provide an output speed range smaller than a low pressure speed range alone.
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公开(公告)号：US20210040894A1
公开(公告)日：2021-02-11
申请号：US16536960
申请日：2019-08-09
Applicant: Hamilton Sundstrand Corporation
Inventor： Aaron M. Finke , Stephen Michael Bortoli , Jonathan C. Dell
Abstract: A turbomachine dual spool transmission system can include a transmission assembly configured to connect to a combination output of a dual spool differential at a transmission input to be driven by the combination output to turn a transmission output. The transmission assembly can be configured to provide a first output gear ratio in a first state and a second output gear ratio in a second state. The system can include the dual spool differential. The dual spool differential can include a gear assembly configured to combine a low pressure spool input and a high pressure spool input into a combination output to provide an output speed range smaller than a low pressure speed range alone.
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公开(公告)号：US20200309037A1
公开(公告)日：2020-10-01
申请号：US16363333
申请日：2019-03-25
Applicant: HAMILTON SUNDSTRAND CORPORATION
Inventor： Stephen Michael Bortoli , Aaron M. Finke , Mark J. Franklin
Abstract: A power transmission includes an input shaft, an output shaft, and a plurality of gear ratios selectably engagable with the input shaft and the output shaft to transfer rotational energy from the input shaft to the output shaft to drive the output shaft at a selected output shaft speed. A plurality of clutches, each clutch is located at a clutch lay shaft of a plurality of clutch lay shafts and is configured to control selective engagement of only one gear ratio of the plurality of gear ratios.
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Patent Agency Ranking
公开(公告)号：US20200292074A1
公开(公告)日：2020-09-17
申请号：US16353444
申请日：2019-03-14
Applicant: Hamilton Sundstrand Corporation
Inventor： Aaron M. Finke , Stephen Michael Bortoli , Mark J. Franklin
IPC: F16H63/30 , F02C7/32 , F16H3/66 , F16D25/10 , F16D25/0638
Abstract: Disclosed is a transmission having: an input shaft configured to rotationally communicate with a gas turbine engine; an output shaft configured to rotationally communicate with an aircraft accessory; and a gear system connected between the input shaft and the output shaft, the gear system including: a plurality of clutches that are axially aligned and radially offset, the plurality of clutches configured to engage in parallel the output shaft and shift the transmission to generate a plurality gear speeds; and a plurality of pistons that are configured to engage the respective plurality of clutches, the plurality of pistons being hydraulically controlled and adapted to receive fluid from a respective plurality of ports in the output shaft.
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公开(公告)号：US11834998B2
公开(公告)日：2023-12-05
申请号：US16388548
申请日：2019-04-18
Applicant: Hamilton Sundstrand Corporation
Inventor： Stephen Michael Bortoli , Aaron M. Finke , Mark J. Franklin
CPC classification number: F02C7/32 , F16H3/08 , F16H61/0403 , F05D2220/323 , F05D2260/4031
Abstract: An engine system can include an engine having an engine shaft and a transmission that can include an input shaft connected to the engine shaft to rotate with the engine shaft, one or more rotating gears configured to rotate relative to the input shaft, and a synchromesh configured to selectively engage each of the one or more rotating gears to the input shaft. Transmission can include a second shaft comprising a clutch configured to selectively engage the one or more rotating gears to the second shaft to cause the second shaft to rotate with the one or more rotating gears.
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公开(公告)号：US10823151B2
公开(公告)日：2020-11-03
申请号：US16152590
申请日：2018-10-05
Applicant: Hamilton Sundstrand Corporation
Inventor： Stephen Michael Bortoli , Timothy Scott Konicek
Abstract: A single-unit nose cone for a ram air including: a dome portion located at a forward end of the single unit nose cone; a dome stand portion adjacent to the dome portion; a seat portion adjacent to the dome stand portion; and a stem portion adjacent to the seat portion and located at an aft end of the single-unit nose cone, wherein the dome portion, the dome stand portion, the seat portion, and the stem portion are composed from a single piece of material having a density of about 0.286 pound/cubic inch (7916 kilogram/cubic meter).
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公开(公告)号：US20200309091A1
公开(公告)日：2020-10-01
申请号：US16363987
申请日：2019-03-25
Applicant: Hamilton Sundstrand Corporation
Inventor： Stephen Michael Bortoli , Daniel Kuehn
Abstract: A ram air turbine (RAT) can include a housing and a turbine shaft configured to connect to one or more turbine blades and be turned by the one or more blades. The turbine shaft can be disposed in the housing to rotate relative to the housing along a rotational axis. The RAT can include a first bearing and a second bearing mounted between the turbine shaft and the housing to allow the turbine shaft to rotate relative to the housing. The RAT can include a whirl reduction system configured to dampen or eliminate whirl around the rotational axis.
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公开(公告)号：US20200298992A1
公开(公告)日：2020-09-24
申请号：US16361811
申请日：2019-03-22
Applicant: Hamilton Sundstrand Corporation
Inventor： Daniel Kuehn , Stephen Michael Bortoli
Abstract: A ram air turbine (RAT) actuator piston can include a body defining a piston structure having an inner cavity. The piston can include one or more damping holes axially defined through the body to the inner cavity and a lock rod hole defined axially through the body to the inner cavity. The lock rod hole can have a larger flow area than one or more of the one or more damping holes. The lock rod hole can be configured to receive a lock rod of a RAT actuator to at least partially block flow through the lock rod hole when the lock rod is in a locked position. The one or more damping holes can be configured to allow flow through the damping holes in the locked position to allow the RAT actuator piston to move within the RAT actuator in the locked position to dissipate vibratory loads.
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