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2017 条记录 (耗时 0.023 秒)

    Novel Design and Production Technique of Synthetic Jet Actuators
    1.
    发明公开
    Novel Design and Production Technique of Synthetic Jet Actuators 审中-公开

    公开(公告)号：US20240328441A1

    公开(公告)日：2024-10-03

    申请号：US18495708

    申请日：2023-10-26

    申请人： Actasys, Inc.

    发明人： David Menicovich ,  Daniele Gallardo ,  Michael Amitay ,  Thomas Wideman ,  Anthony Mickalauskas ,  Brian Cyr

    IPC分类号： F15D1/12 ,  B05B1/00 ,  B05B17/06 ,  F15D1/00

    CPC分类号： F15D1/12 ,  F15D1/0095 ,  B05B1/002 ,  B05B1/005 ,  B05B17/0661 ,  B05B17/0669

    摘要： A clampless synthetic jet actuator includes a cavity layer having an internal cavity for reception of a fluid volume and an orifice providing a fluid communication between the cavity and an external atmosphere; and an oscillatory membrane having a piezoelectric material adapted to deflect the oscillatory membrane in response to an electrical signal. The cavity has an opening in at least one planar surface of the cavity layer, and the cavity layer and the oscillatory membrane are joined by a high strength, low shear modulus adhesive material with the oscillatory membrane positioned adjacent to the planar surface having the cavity opening and adapted as an enclosing surface to said cavity opening. The oscillatory membrane is adapted to compress and expand a volume within the cavity, based on a deflection generated by the piezoelectric material, for generating a fluid flow between the cavity and the external atmosphere through the orifice.

    Efficient mechanical generation of cavitation in liquids
    2.
    发明授权
    Efficient mechanical generation of cavitation in liquids 有权

    公开(公告)号：US12104625B2

    公开(公告)日：2024-10-01

    申请号：US17517996

    申请日：2021-11-03

    申请人： The Texas A & M University System

    发明人： David Staack ,  Xin Tang

    IPC分类号： F15D1/00

    CPC分类号： F15D1/007

    摘要： In an embodiment, the present disclosure pertains to a cavitation generation device that includes a dactyl plunger rotatable about an axis between an open position and a closed position and a propus socket having a channel. The propus socket is rigidly mounted below the dactyl plunger, and the dactyl plunger is received into the propus socket when the dactyl plunger is in the closed position. The cavitation generation device can also include a torsion spring that biases the dactyl plunger into contact with the propus socket. In another embodiment, the present disclosure pertains to a method of inducing a cavitation including biasing a dactyl plunger via a torsion spring, and rotating the dactyl plunger, by action of the torsion spring, into a propus socket. The propus socket includes a nozzle-shaped channel. The method further includes ejecting a socket cavity volume through the nozzle-shaped channel thereby inducing a cavitation event.

    Arrangements, duct arrangements and methods
    4.
    发明授权
    Arrangements, duct arrangements and methods 有权

    公开(公告)号：US12078194B2

    公开(公告)日：2024-09-03

    申请号：US18006475

    申请日：2021-07-19

    申请人： BAE SYSTEMS plc

    发明人： Matthew Thompson ,  Mehmet Atlar ,  Callum Stark ,  Moritz Troll ,  Weichao Shi

    IPC分类号： F15D1/00

    CPC分类号： F15D1/0015

    摘要： According to the present disclosure there is provided a liquid flow influencing duct arrangement comprising: a first duct section arranged to receive a liquid flow therethrough, the first duct section defining a first direction through the first duct section from a liquid inlet end to a liquid outlet end; a second duct section defining a second direction through the second duct section from a liquid inlet end to a liquid outlet end, the second duct section comprising a vortex generator surface, wherein the vortex generator surface is arranged to induce vortices in the liquid flow through the first duct section, wherein the duct arrangement further comprises a rotor housed in one of the duct sections.

    Surface coating for reduction of aerodynamic noise and vibrations
    5.
    发明授权
    Surface coating for reduction of aerodynamic noise and vibrations 有权

    公开(公告)号：US12012981B2

    公开(公告)日：2024-06-18

    申请号：US17067464

    申请日：2020-10-09

    申请人： TEXAS TECH UNIVERSITY SYSTEM

    发明人： Burak Aksak ,  Luciano Castillo ,  Humberto Bocanegra Evans

    IPC分类号： F15D1/00 ,  B64C21/10

    CPC分类号： F15D1/0035 ,  B64C21/10 ,  B64C2230/26

    摘要： A coating apparatus for the reduction of aerodynamic noise and vibrations. The coating apparatus is configured to include a group of fibrillar structures, wherein each fibrillar structure is configured with a diverging tip so that the coating reduces the size of and shifts downstream, a separation bubble, and modulates large-scale recirculating motion. Each fibrillar structure can be configured as a cylindrical micropillar. The group of fibrillar structures can be configured as a group of uniformly distributed cylindrical micropillars (e.g., one or more micropillar arrays). The surface coating is effective in reducing the separation bubble and displacing the separation bubble downstream. The coating facilitates a reduction in noise (e.g., aerodynamic noise) and vibrations due to the reduction in the size of the separation bubble.

    Removable passive airflow oscillation device and system
    7.
    发明授权
    Removable passive airflow oscillation device and system 有权

    公开(公告)号：US11994156B2

    公开(公告)日：2024-05-28

    申请号：US18164560

    申请日：2023-02-03

    申请人： Textron Innovations Inc.

    发明人： William B. Wood ,  Lawrence M. Corso

    IPC分类号： F15D1/00 ,  B33Y80/00

    CPC分类号： F15D1/0065 ,  B33Y80/00 ,  F15D1/0025 ,  B64C2230/18

    摘要： A removable passive airflow oscillation device can be disposed within a pressurized wing structure utilized as a plenum. The passive airflow oscillation device can be a removable insert disposed into exterior vehicle surfaces with pressurization of a sealed chamber to provide the airflow. The device can include a cavity configured to receive the airflow from an ingress opening, direct the airflow therethrough to generate a predetermined oscillating airflow, and expel the oscillatory airflow from the egress opening. The removable passive airflow oscillation devices can provide quick and simple replacement and maintenance of damaged or clogged devices. The aft chamber of the flap seal can be sealed and pressurized to serve as a plenum providing the airflow to the actuators. The device can receive airflow, such as compressor air, and expel an oscillating airflow. Because each device is self-contained the number of devices and location thereof can vary by application.

    Airflow adjusting apparatus
    8.
    发明授权
    Airflow adjusting apparatus 有权

    公开(公告)号：US11993321B2

    公开(公告)日：2024-05-28

    申请号：US17369540

    申请日：2021-07-07

    申请人： SUBARU CORPORATION

    发明人： Naoto Watanabe ,  Yusaku Dogahira

    IPC分类号： B62D35/02 ,  B60R16/03 ,  F15D1/00

    CPC分类号： B62D35/02 ,  B60R16/03 ,  F15D1/0075

    摘要： An airflow adjusting apparatus to be provided in a vehicle includes a first airflow generator and a second airflow generator. The vehicle includes a front wheel and a rear wheel that are disposed in a vehicle longitudinal direction to be partly protruded from a bottom surface of a vehicle body of the vehicle downward in a vertical direction of the vehicle body. The first airflow generator is provided on the bottom surface of the vehicle body and behind the front wheel, and configured to generate a first airflow moving backward of the vehicle. The second airflow generator is provided on the bottom surface of the vehicle body and behind the first airflow generator, and configured to generate a second airflow that deflects, vehicle-widthwise inward, an airflow flowing in from a side on which the first airflow generator is disposed.

    Airflow regulation and control apparatus and server
    9.
    发明授权
    Airflow regulation and control apparatus and server 有权

    公开(公告)号：US11959503B2

    公开(公告)日：2024-04-16

    申请号：US18254503

    申请日：2021-09-28

    申请人： INSPUR ELECTRONIC INFORMATION INDUSTRY CO., LTD.

    发明人： Jicheng Xia

    IPC分类号： F15D1/00 ,  H05K7/20

    CPC分类号： F15D1/006 ,  F15D1/0005 ,  H05K7/20145 ,  H05K7/20727

    摘要： The disclosure provides an airflow regulation and control apparatus. A ventilation hole is formed in a windshield in a penetrating manner; a rectangular plate is mounted on the windshield; the rectangular plate is lifted by means of power provided by a lifting wing disposed thereon, and the height of the rectangular plate when moving upwards exceed the height of an upper edge of a main body portion of the windshield; when wind strength is low, the rectangular plate is located at a lower portion under the action of gravity and shields the ventilation hole; when the wind strength is increased, the lifting wing is blown by an airflow to generate upwards lifting force, and drives the rectangular plate to moved upwardly so as to shield an opening in an upper portion of the windshield and block the airflow.