Propulsion system with initiators for selective activation of multiple rocket motors

    公开(公告)号:US11846252B2

    公开(公告)日:2023-12-19

    申请号:US17466113

    申请日:2021-09-03

    CPC classification number: F02K9/30 F02K9/26 F02K9/763 F02K9/94

    Abstract: A power generation system includes a manifold having multiple plenums, capable of receiving multiple solid rocket motors. Initiators are coupled to the manifold, and are operatively coupled to respective of the plenums, to selectively fire different groups of the rocket motors coupled to respective of the plenums. The rocket motors act in parallel, to provide thrust in a single direction. The initiators may activate ignition charges that are in the plenums. The plenums may be annular plenums, which may be located in an annular manifold. The plenums may be lined with an insulator material. A cover may be used to cover the plenums, and also to receive the rocket motors. The rocket motors may be solid-fuel rocket motors, with propellant grains and nozzles. The individual rocket motors may have separate ignition booster charges coupled to the plenum, which are ignited by the ignition charge.

    PHOTONIC INTEGRATED CIRCUIT MULTI-WAVELENGTH PHASE MODULATOR NETWORKS

    公开(公告)号:US20230400628A1

    公开(公告)日:2023-12-14

    申请号:US17806873

    申请日:2022-06-14

    CPC classification number: G02B6/12004 G02B6/12014 G02B2006/12035

    Abstract: An apparatus includes a photonic integrated circuit having an optical phased array, where the optical phased array includes multiple unit cells. Each unit cell includes at least one antenna element configured to transmit or receive multiple optical signals having spectrally-distinct wavelengths or wavelength ranges. Each unit cell also includes at least one signal pathway configured to transport the optical signals to or from the at least one antenna element. Each unit cell further includes a phase modulator configured to modify phases of the optical signals being transported through the at least one signal pathway. Each unit cell is configured to provide correlated phase shifts to the optical signals having the spectrally-distinct wavelengths or wavelength ranges.

    Switching Mechanism for A Multi-Spectral Laser Transmitter

    公开(公告)号:US20230387645A1

    公开(公告)日:2023-11-30

    申请号:US17827610

    申请日:2022-05-27

    CPC classification number: H01S3/0809 H01S3/0085 H01S3/0071

    Abstract: An modular optical switching system and switching mechanism for a multispectral laser transmitter are provided. The system includes a modular housing; a moveable carrier connected to and disposed within the modular housing; a first optical member supported by the moveable carrier; and a second optical member supported by the moveable carrier. The moveable carrier is operable to selectively move the first optical member into alignment with a laser beam of the multispectral laser transmitter and to selectively move the second optical member into alignment with the laser beam of the multispectral laser transmitter.

    ACCOMMODATING DISSIMILAR CAMERAS ON A COMMON SCANNING GIMBAL - STAGGER-STEP SCANNING

    公开(公告)号:US20230385999A1

    公开(公告)日:2023-11-30

    申请号:US17752962

    申请日:2022-05-25

    CPC classification number: G06T5/50 G01J3/2823 G06T2207/10036

    Abstract: Optical imaging apparatus and method of operating the same, where the apparatus includes optics configured to provide a first optical channel and a second optical channel through the optics, a two-dimensional image sensor optically coupled to the optics, the two-dimensional image sensor configured to receive a first optical signal from the first optical channel and provide a two-dimensional image, a one-dimensional image sensor assembly optically coupled to the optics and sharing a same line of sight, the one-dimensional image sensor assembly configured to receive a second optical signal from the second optical channel at a one-dimensional image sensor therein to provide an image with an overlapping coverage area in the two-dimensional image, and at least one processor configured to operate the two-dimensional image sensor and the one-dimensional image sensor assembly.

    DEVICE FOR OPTIMAL SATELLITE EFFECTS DELIVERY VIA REVERSE TIME HEAT ISOMORPHISM

    公开(公告)号:US20230373658A1

    公开(公告)日:2023-11-23

    申请号:US17749945

    申请日:2022-05-20

    CPC classification number: B64G1/1007 B64G1/1085 G06F17/13

    Abstract: Apparatus, computer-readable medium, and method for optimal delivery of one or more satellite effects via reverse time heat equation isomorphism including constructing a generalized formulation of the heat equation corresponding to a commander's intent for delivery of the one or more satellite effects, performing a separation of variables to decouple a plurality of variables into a plurality of corresponding separated equations, solving the plurality of separated equations to produce candidate solutions, applying boundary conditions to each candidate solution, filtering the candidate solutions to mitigate ill-posedness of solving the inverse of the heat equation, assessing formal differences between the candidate solutions and the inverse of the heat equation, and generating an optimized schedule of the one or more satellite effects based on the assessment of the formal differences of the candidate solutions.

    LOW-PROFILE CIRCULARLY-POLARIZED ANTENNA
    118.
    发明公开

    公开(公告)号:US20230369766A1

    公开(公告)日:2023-11-16

    申请号:US17663489

    申请日:2022-05-16

    Inventor: John E. Rogers

    CPC classification number: H01Q9/0435 H01Q9/0471 H01Q1/40 H01Q1/521

    Abstract: Described herein is an apparatus and a method for a low-profile, circularly polarized antenna. The antenna comprises a first substrate having a first side and a second side; an antenna element on the first side of the first substrate; a first conductor on the second side of the first substrate proximity coupled to the antenna element; a second conductor on the second side of the first substrate proximity coupled to the antenna element and ±90 degrees out of phase with the first conductor; a second substrate under the first substrate having a least one air gap therein under the antenna element; a third substrate under the second substrate having a first side and a second side; and an electrical ground plane on the second side of the third substrate.

    PHOTONIC INTEGRATED CIRCUIT-BASED TRANSMISSIVE/REFLECTIVE WAVEFRONT OPTICAL PHASE CONTROL

    公开(公告)号:US20230367063A1

    公开(公告)日:2023-11-16

    申请号:US17662797

    申请日:2022-05-10

    CPC classification number: G02B6/12004 G02B2006/12142

    Abstract: An apparatus includes a photonic integrated circuit having multiple cells. Each cell includes first and second antenna elements, where the first antenna element is configured to receive a portion of optical energy and the second antenna element is configured to transmit the portion of the optical energy. Each cell also includes a signal pathway configured to transport the portion of the optical energy between the first and second antenna elements. Each cell further includes a phase modulator configured to adjust a phase of the portion of the optical energy transported over the signal pathway. The apparatus also includes multiple wavefront sensors configured to measure wavefront errors in the portions of the optical energy. The apparatus further includes multiple phase controllers configured to adjust operation of the phase modulators in order to at least partially reduce the wavefront errors.

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