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公开(公告)号：US11014655B2
公开(公告)日：2021-05-25
申请号：US16103083
申请日：2018-08-14
Applicant: Bell Helicopter Textron Inc.
Inventor： Dudley E. Smith , Cory M. Hitte , Bryan Marshall , Carlos Alexander Fenny
Abstract: A system and method for providing supplemental power includes: a motor-generator or a hydraulic pump-motor configured to attach to a transmission of an engine, a controller connected to the motor-generator or the hydraulic pump-motor, and a battery system or a hydraulic accumulator coupled to the motor-generator or the hydraulic pump-motor, respectively. During normal operation of the engine, the engine drives the transmission to rotate rotor blades connected to the transmission, and the motor-generator or the hydraulic pump-motor draws an energy from the transmission and store the energy in the battery system or the hydraulic accumulator, respectively. Upon a manual and/or an automatic control by the controller, the battery system or the hydraulic accumulator discharges the energy to the motor-generator or the hydraulic pump-motor, respectively, and the motor-generator or the hydraulic pump-motor provides the supplemental power to drive the transmission to rotate the rotor blades.
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公开(公告)号：US10723448B2
公开(公告)日：2020-07-28
申请号：US15350338
申请日：2016-11-14
Applicant: Bell Helicopter Textron, Inc.
Inventor： Jared Mark Paulson , Bryan Marshall , Paul Sherrill , Bryan Judd
Abstract: A weight system for a rotor blade includes a weight box open in an outboard direction, a weight guide rod connected to the weight box, the weight guide rod extending in a spanwise direction through an interior of the weight box, and a span balance weight disposed within the weight box, the span balance weight being captured between the weight guide rod and the weight box.
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公开(公告)号：US20190100300A1
公开(公告)日：2019-04-04
申请号：US15720626
申请日：2017-09-29
Applicant: Bell Helicopter Textron Inc.
Inventor： Andrew Paul Haldeman , Dalton T. Hampton , Bryan Marshall , Frank Bradley Stamps
IPC: B64C27/00 , B64C27/605 , B64C27/72 , B64C27/48 , B64C27/39
Abstract: An aircraft rotor assembly has a yoke and a plurality of rotor blade assemblies coupled thereto. Each of the rotor blade assemblies include a rotor blade, a bearing, and a blade grip coupling the rotor blade to the bearing. Each of the rotor blades is rotatable about a lead-lag axis, flap axis, and a pitch change axis, wherein all the axes intersect within the bearing. Adjacent pairs of rotor blade assemblies are coupled together via a damper assembly that is coupled to the pitch change axis of each of the rotor blade assemblies.
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公开(公告)号：US09522730B2
公开(公告)日：2016-12-20
申请号：US14934477
申请日：2015-11-06
Applicant: Bell Helicopter Textron Inc.
Inventor： Dudley E. Smith , Cory M. Hitte , Bryan Marshall , Carlos Alexander Fenny
CPC classification number: B64C27/006 , B64C27/12 , B64D27/24 , B64D2027/026 , Y10T29/49117
Abstract: Embodiments refer generally to systems and methods for providing autorotative enhancement for helicopters using an autorotative assist unit coupled to the transmission of the helicopter. Methods of utilizing an autorotative assist unit as well as retrofitting an autorotative assist unit to an existing helicopter are also disclosed. By employing an autorotative assist unit, improved autorotation can be achieved without the need to increase the weight of the rotor.
Abstract translation: 实施例总体上涉及用于使用耦合到直升机的传输的自动辅助单元来提供直升机的自动增强的系统和方法。 还公开了利用自动辅助单元以及将自动辅助单元改装到现有直升机的方法。 通过使用自动辅助单元，可以实现改进的自转，而不需要增加转子的重量。
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公开(公告)号：US09180964B2
公开(公告)日：2015-11-10
申请号：US13834215
申请日：2013-03-15
Applicant: Bell Helicopter Textron Inc.
Inventor： Dudley E. Smith , Cory M. Hitte , Bryan Marshall , Carlos Alexander Fenny
CPC classification number: B64C27/006 , B64C27/12 , B64D27/24 , B64D2027/026 , Y10T29/49117
Abstract: An autorotative enhancement system comprises a transmission having a driveshaft configured to couple to an engine. A mast is configured to couple to multiple rotor blades. An autorotative assist unit is configured to the transmission and is configured to store energy during normal operation and drive the rotor blades through the transmission to provide supplemental autorotative assistance upon loss of engine power.
Abstract translation: 自动增强系统包括具有被配置为耦合到发动机的驱动轴的变速器。 桅杆配置成连接到多个转子叶片。 自动辅助单元被构造成用于变速器，并且被配置为在正常操作期间存储能量并且通过变速器驱动转子叶片，以在发动机动力损失时提供补充的自动辅助。
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Patent Agency Ranking
公开(公告)号：US20190092460A1
公开(公告)日：2019-03-28
申请号：US15713277
申请日：2017-09-22
Applicant: Bell Helicopter Textron Inc.
Inventor： Bryan Marshall , Mark A. Wiinikka , Paul Sherrill , Frank Bradley Stamps
Abstract: An aircraft rotor assembly has a yoke defining a plurality of bearing pockets. Each bearing pocket houses an axisymmetric elastomeric spherical bearing at least partially therein. The axisymmetric elastomeric spherical bearings comprise flap, lead-lag, and pitch hinges for rotor blades coupled thereto. The rotor blades maintain a first in-lane frequency of less than 1/rev through the use of damper assemblies coupled between adjacent blades.
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公开(公告)号：US20170096219A1
公开(公告)日：2017-04-06
申请号：US15383458
申请日：2016-12-19
Applicant: Bell Helicopter Textron Inc.
Inventor： Dudley E. Smith , Cory M. Hitte , Bryan Marshall , Carlos Alexander Fenny
CPC classification number: B64C27/006 , B64C27/12 , B64D27/24 , B64D2027/026 , Y10T29/49117
Abstract: Embodiments refer generally to systems and methods for providing autorotative enhancement for helicopters using an autorotative assist unit coupled to the transmission of the helicopter. Methods of utilizing an autorotative assist unit as well as retrofitting an autorotative assist unit to an existing helicopter are also disclosed. By employing an autorotative assist unit, improved autorotation can be achieved without the need to increase the weight of the rotor.
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公开(公告)号：US20160059957A1
公开(公告)日：2016-03-03
申请号：US14934477
申请日：2015-11-06
Applicant: Bell Helicopter Textron Inc.
Inventor： Dudley E. Smith , Cory M. Hitte , Bryan Marshall , Carlos Alexander Fenny
CPC classification number: B64C27/006 , B64C27/12 , B64D27/24 , B64D2027/026 , Y10T29/49117
Abstract: Embodiments refer generally to systems and methods for providing autorotative enhancement for helicopters using an autorotative assist unit coupled to the transmission of the helicopter. Methods of utilizing an autorotative assist unit as well as retrofitting an autorotative assist unit to an existing helicopter are also disclosed. By employing an autorotative assist unit, improved autorotation can be achieved without the need to increase the weight of the rotor.
Abstract translation: 实施例总体上涉及用于使用耦合到直升机的传输的自动辅助单元来提供直升机的自动增强的系统和方法。 还公开了利用自动辅助单元以及将自动辅助单元改装到现有直升机的方法。 通过使用自动辅助单元，可以实现改进的自转，而不需要增加转子的重量。
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公开(公告)号：US20140263820A1
公开(公告)日：2014-09-18
申请号：US13834215
申请日：2013-03-15
Applicant: BELL HELICOPTER TEXTRON INC.
Inventor： Dudley E. Smith , Cory M. Hitte , Bryan Marshall , Carlos Alexander Fenny
CPC classification number: B64C27/006 , B64C27/12 , B64D27/24 , B64D2027/026 , Y10T29/49117
Abstract: Embodiments refer generally to systems and methods for providing autorotative enhancement for helicopters using an autorotative assist unit coupled to the transmission of the helicopter. Methods of utilizing an autorotative assist unit as well as retrofitting an autorotative assist unit to an existing helicopter are also disclosed. By employing an autorotative assist unit, improved autorotation may be achieved without the need to increase the weight of the rotor.
Abstract translation: 实施例总体上涉及用于使用耦合到直升机的传输的自动辅助单元来提供直升机的自动增强的系统和方法。 还公开了利用自动辅助单元以及将自动辅助单元改装到现有直升机的方法。 通过使用自动辅助单元，可以实现改进的自转，而不需要增加转子的重量。
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公开(公告)号：US10773798B2
公开(公告)日：2020-09-15
申请号：US15720626
申请日：2017-09-29
Applicant: Bell Helicopter Textron Inc.
Inventor： Andrew Paul Haldeman , Dalton T. Hampton , Bryan Marshall , Frank Bradley Stamps
Abstract: An aircraft rotor assembly has a yoke and a plurality of rotor blade assemblies coupled thereto. Each of the rotor blade assemblies include a rotor blade, a bearing, and a blade grip coupling the rotor blade to the bearing. Each of the rotor blades is rotatable about a lead-lag axis, flap axis, and a pitch change axis, wherein all the axes intersect within the bearing. Adjacent pairs of rotor blade assemblies are coupled together via a damper assembly that is coupled to the pitch change axis of each of the rotor blade assemblies.
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