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    Anti-drone firework device
    31.
    发明授权
    Anti-drone firework device 有权

    公开(公告)号：US11892271B2

    公开(公告)日：2024-02-06

    申请号：US17840407

    申请日：2022-06-14

    Applicant: Utah State University Space Dynamics Laboratory ,  Fireworks West Internationale Inc

    Inventor： Morgan Davidson ,  Dustin Burch

    IPC: F41H11/00 ,  F42B4/00

    CPC classification number: F41H11/00 ,  F42B4/00

    Abstract: A counter-swarm firework includes a shell casing, multiple streamers positioned in the shell casing, a burst charge positioned in the shell casing and configured to disperse the multiple streamers from the shell casing when discharged, a pusher plate positioned in the shell casing between the burst charge and the multiple streamers, a fire suppressant layer positioned between the burst charge and the pusher plate, and a kick charge configured to launch the shell casing and its contents prior to discharging the burst charge. The fire suppression layer may be configured to suppress heat generated by the discharge of the burst charge.

    MINIATURIZED GREEN END-BURNING HYBRID PROPULSION SYSTEM FOR CUBESATS
    34.
    发明申请
    MINIATURIZED GREEN END-BURNING HYBRID PROPULSION SYSTEM FOR CUBESATS 有权

    公开(公告)号：US20220348360A1

    公开(公告)日：2022-11-03

    申请号：US17691614

    申请日：2022-03-10

    Applicant: Utah State University Space Dynamics Laboratory

    Inventor： Tyson Smith ,  Zachary Lewis ,  Kurt Olsen ,  Marc Anthony Bulcher ,  Stephen Whitmore

    IPC: B64G1/40 ,  F02K9/72

    Abstract: A hybrid propulsion system includes a housing, at least two electrodes, a solid-grain fuel material, a combustion chamber, an oxidizer port, and a nozzle. The housing has a first end and a second end and defines a cavity. The electrodes extend into the cavity. The fuel material is free of an oxidizer and is positioned in the cavity. The fuel material has a combustion surface and is exposed to the electrodes. The combustion chamber is defined between the combustion surface and the second end. The oxidizer port provides a flow of oxidizer to the combustion chamber. The nozzle is positioned at the second end. Combustion of the fuel material in the combustion chamber may be dominated by radiative heat transfer. Combustion of the fuel material in the combustion chamber may generate thrust of no more than 5 N at an oxidizer flow rate of no more than 5 g/s.

    Echo cancelation using convolutive blind source separation
    38.
    发明授权
    Echo cancelation using convolutive blind source separation 有权

    公开(公告)号：US10939205B2

    公开(公告)日：2021-03-02

    申请号：US16389699

    申请日：2019-04-19

    Applicant: Utah State University

    Inventor： Todd K. Moon ,  Jacob H. Gunther

    IPC: G06F17/00 ,  H04R3/02

    Abstract: For canceling acoustic echoing, a processor receives audio signals comprising a speaker output and an ambient input. The processor further calculates separated output signals from mixed signals using a separating transfer function. The processor calculates a criterion function based on the separated output signals. In addition, the processor calculates an acoustic echo transfer function based on maximizing the a criterion function. The processor separates a source signal from the audio signal using the acoustic echo transfer function.

    Constant DC current input to constant DC voltage output power supply covering a wide programmable range
    39.
    发明授权
    Constant DC current input to constant DC voltage output power supply covering a wide programmable range 有权

    公开(公告)号：US10938313B2

    公开(公告)日：2021-03-02

    申请号：US16417221

    申请日：2019-05-20

    Applicant: Utah State University

    Inventor： Tarak Saha ,  Hongjie Wang ,  Anindya Chitta Bagchi ,  Regan A. Zane

    IPC: H02M3/335 ,  G05F1/10 ,  H02M1/00

    Abstract: An apparatus includes an active bridge section with input terminals that receive power from a constant current source where the active bridge section operates at a fixed switching frequency. The apparatus includes a resonant section with a resonant inductor, a transformer and a resonant capacitor. The inductor is connected in series with a primary winding and the capacitor is connected in parallel with a secondary winding of the transformer. The resonant section is connected to an output of the active bridge section. The apparatus includes an output rectifier section that receives power from the resonant section and includes output terminals for connection to a load, and includes a controller that regulates output voltage to the load where the controller regulates output voltage to the load by controlling switching of the active bridge section. The fixed switching frequency of the active bridge section matches a resonant frequency of the resonant section.

    TRANSGENIC SILKWORMS EXPRESSING HAGFISH THREAD KERATIN
    40.
    发明申请
    TRANSGENIC SILKWORMS EXPRESSING HAGFISH THREAD KERATIN 有权

    公开(公告)号：US20210047655A1

    公开(公告)日：2021-02-18

    申请号：US16995372

    申请日：2020-08-17

    Applicant: Utah State University

    Inventor： Randolph V. LEWIS ,  Justin A. JONES ,  Xiaoli ZHANG

    IPC: C12N15/85 ,  C07K14/78 ,  C07K14/46

    Abstract: Transgenic silkworms stably expressing hagfish thread keratin genes or composite silkworm/hagfish thread keratin genes are disclosed. The exogenous hagfish thread keratin genes are stably integrated into a defined site of the fibroin heavy chain intron or a fibroin light chain intron of silkworms. Synthetic hagfish thread keratin proteins and composite hagfish thread keratin-silkworm genes and proteins are provided. The expression of exogenous hagfish thread keratin genes is driven by the endogenous fibroin heavy chain promoter, improving the genetic stability of transgenic silkworms. The composite silkworm/hagfish thread keratin fibers exhibit exceptional mechanical performance, compared to normal silkworm silk fibers and other transgenic silkworm fibers.

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