SYNTHETIC APERTURE RADAR USING ALTERNATING BEAMS AND ASSOCIATED METHODS

    公开(公告)号:EP4428574A1

    公开(公告)日:2024-09-11

    申请号:EP24156038.2

    申请日:2024-02-06

    CPC classification number: G01S13/904 G01S13/225

    Abstract: A synthetic aperture radar (SAR) (20) for a flight vehicle (10) may include an elongate phased array antenna (22) oriented with a long axis in an elevation direction (30). The elevation direction (30) is normal to a direction of flight (32) of the flight vehicle (10). A transmitter (24) is coupled to the elongate phased array antenna (22), and a receiver (26) is coupled to the elongate phased array antenna (22). A controller (28) is coupled to the transmitter (24) and receiver (26) and is configured to generate temporally alternating sets of receive beams (52, 54) for respective swaths to be used to form a SAR image across a surface (50) below the flight vehicle (10). The same center frequency is used to create consistent SARs for all swaths, allowing for coherent combination between subsequent passes over the same swath.

    SATELLITE PROPULSION SYSTEM INCLUDING COMBUSTION CHAMBER AND ELECTRICAL ARC HEATER AND RELATED METHODS

    公开(公告)号:EP4417806A1

    公开(公告)日:2024-08-21

    申请号:EP24151829.9

    申请日:2024-01-15

    CPC classification number: F02K9/74 B64G1/415

    Abstract: A hybrid propulsion engine for a satellite that includes a satellite housing and electronics carried by the satellite housing, may include a rechargeable electrical power source carried by the satellite housing. The hybrid propulsion engine may also include a combustible fuel supply carried by the satellite housing, and an engine housing defining a combustion chamber for fuel from the combustible fuel supply. The hybrid propulsion engine may also include an electrical arc heater associated with the combustion chamber and configured to supply additional heat from the rechargeable electrical power source, and an exhaust nozzle downstream from the combustion chamber.

    ELECTRONIC ASSEMBLY WITH GLIDE SURFACES AND RELATED METHODS

    公开(公告)号:EP4284134A1

    公开(公告)日:2023-11-29

    申请号:EP23172056.6

    申请日:2023-05-08

    Abstract: An electronic assembly (100) includes a chassis (101) having electronic module mounting positions (102a-102f). The electronic assembly also includes a respective electronic module (104) received in each electronic module mounting position and having a module cooling gas passageway (105). Each electronic module has a module glide surface (107). The electronic assembly includes a respective sealing retainer (110a-110b) coupled between the chassis and each electronic module. The sealing retainer has a cooling gas passageway (111) aligned with a chassis cooling gas passageway (103a-103f) and the module cooling gas passageway. The sealing retainer includes a retainer body (112) having a retainer glide surface (113), and a gas sealing gasket (114) carried by the retainer body. The module glide surface and the retainer glide surface have respective cooperating features so that the respective electronic module is maintained in spaced relation from the sealing gasket as the respective electronic module is slidably inserted into a seated position.

    OPTICAL SYSTEM FOR USE WITH A VACUUM CHAMBER AND ASSOCIATED METHOD

    公开(公告)号:EP4242714A3

    公开(公告)日:2023-10-11

    申请号:EP23182663.7

    申请日:2022-11-28

    Abstract: An optical assembly to be used between a target positioned within a vacuum chamber and a laser source comprises: a housing; a frame; a lens carried by the frame; a plurality of spiral flexures each having a respective proximal end coupled to the frame; a plurality of flexure actuators, each flexure actuator coupled between the housing and a distal end of a respective spiral flexure; and a plurality of translation actuators coupled between the housing and the frame, wherein the frame includes a pair of elongate passageways orthogonal to one another and wherein each translation actuator comprises a motor having an eccentric output shaft received within a respective elongate passageway.

    OPTICAL SYSTEM FOR USE WITH A VACUUM CHAMBER AND ASSOCIATED METHOD

    公开(公告)号:EP4242714A2

    公开(公告)日:2023-09-13

    申请号:EP23182663.7

    申请日:2022-11-28

    Abstract: An optical assembly to be used between a target positioned within a vacuum chamber and a laser source comprises: a housing; a frame; a lens carried by the frame; a plurality of spiral flexures each having a respective proximal end coupled to the frame; a plurality of flexure actuators, each flexure actuator coupled between the housing and a distal end of a respective spiral flexure; and a plurality of translation actuators coupled between the housing and the frame, wherein the frame includes a pair of elongate passageways orthogonal to one another and wherein each translation actuator comprises a motor having an eccentric output shaft received within a respective elongate passageway.

    HIGH TEMPERATURE HYBRID BATTERY PACK
    8.
    发明公开

    公开(公告)号:EP4164085A3

    公开(公告)日:2023-04-26

    申请号:EP22199973.3

    申请日:2022-10-06

    Inventor: JAMERSON, Eric

    Abstract: Systems and methods for operating a circuit. The methods comprise: using a first thermal responsive device to connect a first power source between first and second terminals to which an external load can be connected to the circuit; using a second thermal responsive device to cause a thermal unresponsive device to be in an open circuit condition; and performing operations responsive to a temperature of a surrounding environment exceeding a given temperature value. The operations include: disconnecting the first power source from at least the first terminal by transitioning the first thermal responsive device from a closed state to an open state; and connecting a second power source between the first and second terminals by transitioning the thermal unresponsive device from the open circuit condition to a closed circuit condition using the second thermal responsive device.

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