公开(公告)号：US20240343378A1

公开(公告)日：2024-10-17

申请号：US18629227

申请日：2024-04-08

申请人： Airbus Operations (S.A.S.) ,  Airbus Operations GmbH

发明人： Jan Sebastian GRÜNE ,  Thomas NODE-LANGLOIS ,  Stéphane GALDEANO ,  Jean-Paul ROMEO ,  Grégoire PONT ,  François CHAVET

IPC分类号： B64C1/14

CPC分类号： B64C1/1461 ,  B64C2220/00

摘要： An aircraft part with a door for accessing inside an aircraft and a fuselage part includes a cavity between an upstream edge of the door in the closed position and a downstream edge of the fuselage part, the cavity opening to the outside of the aircraft part and having a bottom connected to the upstream edge of the door and to the downstream edge of the fuselage part. The aircraft part includes a chamfer on the outer face of an outer plate of the door at the upstream edge of the door, as well as possibly other technical features such as a sharp ridge and/or an add-on component, allowing for reducing noise generated by the cavity.

公开(公告)号：US11975814B2

公开(公告)日：2024-05-07

申请号：US17563125

申请日：2021-12-28

申请人： Boeing Ace Collateral Agent, LLC

发明人： Tom Vice

IPC分类号： B64C1/38 ,  B64C1/06 ,  B64C30/00

CPC分类号： B64C1/38 ,  B64C1/0683 ,  B64C30/00 ,  B64C2220/00

摘要： A system that optimizes the shape or configuration of an aircraft to minimize ground overpressure shock strength while in supersonic flight over speed restricted terrain and to morph to an optimized configuration for drag minimization while over unrestricted terrain.

公开(公告)号：US11741936B2

公开(公告)日：2023-08-29

申请号：US17401667

申请日：2021-08-13

申请人： Department of the Army

发明人： Jackson Yeboah

IPC分类号： H04B1/00 ,  G10K11/178 ,  B64C39/02 ,  H04R3/00 ,  B64U20/10 ,  B64U50/14

CPC分类号： G10K11/1785 ,  B64C39/024 ,  B64C2220/00 ,  B64U20/10 ,  B64U50/14 ,  G10K2210/1281

摘要： An advanced acoustic awareness platform configured to classify environmental sounds. The advanced acoustic awareness platform comprises an audio signal acquisition sensor array and one or more processors programmed to augment the audio signal, extract features for the audio signal, visualize, and classify the signal using one or more labels. In at least one embodiment, the signal is classified based on transfer learning associated with a pretrained machine learning model.

公开(公告)号：US11741932B2

公开(公告)日：2023-08-29

申请号：US17568168

申请日：2022-01-04

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Stephen William John ,  Toshiyuki Matsumura ,  Kazunobu Konishi ,  Katsuhiko Asai ,  Shunsuke Kuhara

IPC分类号： G10K11/178 ,  B64C27/20 ,  B64C39/02 ,  G05D1/08 ,  H04R1/32 ,  B64U30/20

CPC分类号： G10K11/17823 ,  B64C27/20 ,  B64C39/024 ,  G05D1/0808 ,  H04R1/323 ,  H04R1/326 ,  B64C2220/00 ,  B64U30/20 ,  G10K2210/1281 ,  G10K2210/3046 ,  H04R2410/05 ,  H04R2499/13

摘要： An unmanned aircraft includes: rotor blades; a duct that shrouds the rotor blades and through which airflow generated by rotation of the rotor blades passes; and a processor that controls rotation of the rotor blades. The height to width ratio of an inner space of the duct in which the rotor blades are shrouded is at least 0.5.

公开(公告)号：US11670280B2

公开(公告)日：2023-06-06

申请号：US17550840

申请日：2021-12-14

申请人： HYUNDAI MOBIS CO., LTD.

发明人： Yeong Woo Seo ,  Ju Seong Yu ,  Jin Woo Choi

IPC分类号： G10K11/178 ,  G06N3/04

CPC分类号： G10K11/17883 ,  B64C2220/00 ,  G06N3/04 ,  G10K2210/1281 ,  G10K2210/3011 ,  G10K2210/3044 ,  G10K2210/3047 ,  G10K2210/3056

摘要： An urban air mobility (UAM) noise reduction system and method are provided, where the UAM noise reduction system includes a UAM configured to detect and to provide rotation per minute (RPM) information of a propeller and location coordinate information, and a noise canceling device configured to predict a noise canceling sound wave amplitude on the basis of the RPM information of the propeller and the location coordinate information received through the UAM and to output a noise canceling sound wave corresponding to the predicted noise canceling sound wave amplitude to the UAM.

公开(公告)号：US09994301B2

公开(公告)日：2018-06-12

申请号：US14083077

申请日：2013-11-18

申请人： ROHR, INC.

发明人： Teresa M. Kruckenberg ,  Vijay V. Pujar ,  Robert L. Braden

IPC分类号： B64C1/00 ,  B64C1/38 ,  B64C21/00 ,  B64C23/00

CPC分类号： B64C1/38 ,  B64C21/00 ,  B64C23/005 ,  B64C2220/00 ,  B64C2230/02 ,  Y02T50/166

摘要： A method of generating a pressure wave proximate an airflow surface and altering airflow to promote a localized lowering of skin friction over the airflow surface is described herein. A series of pressure waves may be configured to create a virtual riblet to control turbulent vortices in a boundary layer adjacent to the airflow surface creating a virtual riblet. The pressure waves may be configured to prevent disruption of the flow of air relative to at least one of a step or a gap associated with the airflow surface. The pressure wave generating system may be comprised of at least one of a thermoacoustic material, a piezoelectric material and a semiconductor material, and a microelectric circuit.

公开(公告)号：US20180040316A1

公开(公告)日：2018-02-08

申请号：US15725633

申请日：2017-10-05

申请人： Amazon Technologies, Inc.

发明人： Brian C. Beckman ,  Gur Kimchi

IPC分类号： G10K11/178 ,  B64C39/02 ,  G06N99/00 ,  G01S19/13

CPC分类号： G10K11/178 ,  B64C39/024 ,  B64C2201/024 ,  B64C2201/027 ,  B64C2201/108 ,  B64C2220/00 ,  G01S19/13 ,  G05D1/101 ,  G05D19/02 ,  G05D27/02 ,  G06N99/005 ,  G10K11/17823 ,  G10K11/17853 ,  G10K11/17873 ,  G10K2210/1281 ,  G10K2210/30231 ,  G10K2210/30351 ,  G10K2210/3038 ,  G10K2210/3045

摘要： Noises that are to be emitted by an aerial vehicle during operations may be predicted using one or more machine learning systems, algorithms or techniques. Anti-noises having equal or similar intensities and equal but out-of-phase frequencies may be identified and generated based on the predicted noises, thereby reducing or eliminating the net effect of the noises. The machine learning systems, algorithms or techniques used to predict such noises may be trained using emitted sound pressure levels observed during prior operations of aerial vehicles, as well as environmental conditions, operational characteristics of the aerial vehicles or locations of the aerial vehicles during such prior operations. Anti-noises may be identified and generated based on an overall sound profile of the aerial vehicle, or on individual sounds emitted by the aerial vehicle by discrete sources.

公开(公告)号：US09849968B2

公开(公告)日：2017-12-26

申请号：US14560964

申请日：2014-12-04

申请人： Jonathon J. Linch ,  Kyle M. Rahrig

发明人： Jonathon J. Linch ,  Kyle M. Rahrig

IPC分类号： B64C11/00 ,  B64C11/08 ,  B64C11/18 ,  B64C39/02 ,  B64C39/10

CPC分类号： B64C11/001 ,  B64C11/08 ,  B64C11/18 ,  B64C39/024 ,  B64C39/10 ,  B64C2039/105 ,  B64C2201/028 ,  B64C2201/162 ,  B64C2220/00 ,  Y02T50/12

摘要： A propeller includes a hub coaxially surrounding a longitudinal axis. A ring shroud coaxially surrounds the longitudinal axis and is spaced radially from the hub. At least one propeller blade is fixedly attached to both the hub and ring shroud and extends radially therebetween for mutual rotation therewith. At least one stub blade has a first stub end radially spaced from a second stub end. The first stub end is fixedly attached to a selected one of the hub and ring shroud. The second stub end is cantilevered from the first stub end and is radially interposed between the first stub end and the selected one of the hub and ring shroud.

公开(公告)号：US09663236B1

公开(公告)日：2017-05-30

申请号：US15083123

申请日：2016-03-28

申请人： Amazon Technologies, Inc.

发明人： Dominic Timothy Shiosaki ,  Ricky Dean Welsh

IPC分类号： B64D27/26 ,  B64C39/02 ,  B64C11/32 ,  G05D1/10

CPC分类号： B64C11/305 ,  B64C11/20 ,  B64C11/32 ,  B64C39/024 ,  B64C2201/108 ,  B64C2220/00 ,  B64D27/26 ,  B64D31/06 ,  B64D2027/262 ,  G05D1/0858

摘要： Aerial vehicles may include propulsion units having motors with drive shafts that may be aligned at a variety of orientations, propellers with variable pitch blades, and common operators for aligning the drive shafts at one or more orientations and for varying the pitch angles of the blades. The common operators may include plate elements to which a propeller hub is rotatably joined, and which may be supported by one or more linear actuators that may extend or retract to vary both the orientations of the drive shafts and the pitch angles of the blades. Operating the motors and propellers at varying speeds, gimbal angles or pitch angles enables the motors to generate forces in any number of directions and at any magnitudes. Attributes of the propulsion units may be selected in order to shape or control the noise generated thereby.

公开(公告)号：US20150370266A1

公开(公告)日：2015-12-24

申请号：US14767215

申请日：2014-03-07

申请人： LORD CORPORATION

发明人： Mark A. NORRIS ,  Doug A. SWANSON ,  Mark R. JOLLY

IPC分类号： G05D19/02 ,  G05B15/02 ,  G10K11/16

CPC分类号： G05D19/02 ,  B64C1/40 ,  B64C27/001 ,  B64C2027/004 ,  B64C2220/00 ,  G05B15/02 ,  G10K11/16 ,  G10K11/178 ,  G10K2210/128 ,  G10K2210/129 ,  G10K2210/3211 ,  G10K2210/3212

摘要： Active noise and vibration control (ANVC) systems and methods are provided. The systems and methods include providing sensors configured to detect vibration of a structure and a controller in electrical communication with the sensors. The controller includes a hardware processor and a memory element configured to process the vibration detected by the sensors, generate a force control command signal, and output the force control command signal via an interface. The systems and methods include provisions for at least one circular force generator (CFG) in electrical communication with the controller, the CFG is configured to execute the force control command signal output from the controller and produce a force that substantially cancels the vibration force. In some aspects, one or more CFGs control different vibration frequencies causing unwanted vibrations or acoustical tones. In some aspects, one or more CFG's control unwanted vibrations during some conditions and noise during other conditions.

摘要翻译： 提供主动噪声和振动控制（ANVC）系统和方法。 系统和方法包括提供被配置为检测结构的振动的传感器和与传感器电连通的控制器。 所述控制器包括硬件处理器和存储元件，所述存储器元件被配置为处理由所述传感器检测到的振动，产生力控制命令信号，并且经由接口输出所述力控制命令信号。 该系统和方法包括与控制器电连通的至少一个圆形力发生器（CFG）的配置，CFG被配置为执行从控制器输出的力控制命令信号并产生基本上抵消振动力的力。 在一些方面，一个或多个CFG控制不同的振动频率，引起不想要的振动或声音。 在某些方面，一个或多个CFG在某些情况下控制不必要的振动，而在其它条件下则会产生噪音。