Abstract: Implementations of the disclosed subject matter provide a system including a truss that may have a plurality of bays. Each bay may include a plurality of longerons disposed in a longitudinal direction, a plurality of battens disposed in a transverse direction, and at least two longitudinal struts that are coupled by hinges that are configured to allow the at least two longitudinal struts to fold towards an interior of each bay of the truss, where at least one batten may connect and separate at least one longitudinal strut. The longitudinal struts, the longerons, and the battens may be connected to form the bay, where each side of the bay may be formed from two battens that are joined end-to-end, and where at least some of plurality of battens respectively separate at least some of the plurality of longerons. The truss may be configured to be stowed longitudinally and transversely.

Abstract: Implementations of the disclosed subject matter provide a system including a truss that may have a plurality of bays. Each bay may include a plurality of longerons disposed in a longitudinal direction, a plurality of battens disposed in a transverse direction, and at least two longitudinal struts that are coupled by hinges that are configured to allow the at least two longitudinal struts to fold towards an interior of each bay of the truss, where at least one batten may connect and separate at least one longitudinal strut. The longitudinal struts, the longerons, and the battens may be connected to form the bay, where each side of the bay may be formed from two battens that are joined end-to-end, and where at least some of plurality of battens respectively separate at least some of the plurality of longerons. The truss may be configured to be stowed longitudinally and transversely.

Abstract: Implementations of the disclosed subject matter provide a system including a truss that may have a plurality of bays. Each bay may include a plurality of longerons disposed in a longitudinal direction, a plurality of battens disposed in a transverse direction, and at least two longitudinal struts that are coupled by hinges that are configured to allow the at least two longitudinal struts to fold towards an interior of each bay of the truss, where at least one batten may connect and separate at least one longitudinal strut. The longitudinal struts, the longerons, and the battens may be connected to form the bay, where each side of the bay may be formed from two battens that are joined end-to-end, and where at least some of plurality of battens respectively separate at least some of the plurality of longerons. The truss may be configured to be stowed longitudinally and transversely.

Abstract: A system for harvesting solar energy on a spacecraft includes a stiff substrate layer and a working layer disposed on the substrate layer to provide at least one of a photovoltaic or a reflective function. In a first operational state, the substrate layer is arranged as a tape spring to store potential energy which causes the substrate layer to uncoil and provide, in a second operational state, a photovoltaic module and/or a solar concentrator.

Abstract: A method for managing propellant in a spacecraft is disclosed. The method includes storing liquid propellant in a tank under an operating pressure controlled using a product of chemical decomposition of the propellant. The method may include transferring the liquid propellant out of the tank and chemically decomposing a portion of it using, for example electrolysis. Thus generated one or more gas components may be introduced to the tank to control the operating pressure in the tank.

Abstract: A submersible system is provided having a submersible launch vessel that sends instructions from a mission controller to deploy one or more deployable systems for one or more underwater operations. The submersible launch vessel is submerged within a waterbody. A submersible power supply powers the submersible launch vessel and the one or more deployable systems. One or more communication devices is in communication with the mission controller, and the mission controller is located in one of a remote or a local location relative to the submersible launch vessel. The one or more deployable systems, via the one or more communication devices coupled to the submersible launch vessel, are remote controlled by the mission controller to execute the one or more underwater operations. Also, information associated with the one or more underwater operations including telemetry data is transmitted to the mission controller from the submersible launch vessel.

Abstract: A system for harvesting solar energy on a spacecraft includes a stiff substrate layer and a working layer disposed on the substrate layer to provide at least one of a photovoltaic or a reflective function. In a first operational state, the substrate layer is arranged as a tape spring to store potential energy which causes the substrate layer to uncoil and provide, in a second operational state, a photovoltaic module and/or a solar concentrator.

Abstract: A tracking and monitoring system and method includes a callback engine in communication with a plurality of GNSS-enabled ankle monitor bracelets via cellular/Wi-Fi internet service or SMS text service, depending on availability of services at each bracelet location. SMS text communication may be routed via a relay service. Bracelet straps form electrical circuits by which open, closed, cut, or shorted conditions are detected and relayed to the callback engine. Bracelets include components for detection of magnetic hacking, physical intrusion, software hacking, and GNSS spoofing. The callback engine may remotely update bracelet setting and cause playback of audio messages; bracelets confirm execution with the callback engine. Bracelets include advanced power saving circuitry and notify the callback engine of low battery levels.

Abstract: A subsea garage for an unmanned underwater vehicle (UUV) has a body having a receptacle for the UUV, an open top providing a transit path for the UUV into and out of the receptacle and a base opposed to the open top, the base being arranged to lie on the seabed. At least one post is movable, subsea, relative to the body into a deployed position extending upwardly from the body above the open top. A lid may also be movable relative to the body between a closed position that closes the open top and an open position that allows the UUV to move along the transit path through the open top. A fixed post may extend upwardly from the body above the open top, in which case the lid may enclose the post when in the closed position and expose the post when in the open position.

Abstract: A submersible system is provided having a submersible launch vessel that sends instructions from a mission controller to deploy one or more deployable systems for one or more underwater operations. The submersible launch vessel is submerged within a waterbody. A submersible power supply powers the submersible launch vessel and the one or more deployable systems. One or more communication devices is in communication with the mission controller, and the mission controller is located in one of a remote or a local location relative to the submersible launch vessel. The one or more deployable systems, via the one or more communication devices coupled to the submersible launch vessel, are remote controlled by the mission controller to execute the one or more underwater operations. Also, information associated with the one or more underwater operations including telemetry data is transmitted to the mission controller from the submersible launch vessel.

Abstract: To manage propellant in a spacecraft, the method of this disclosure includes storing propellant in a tank as a mixture of liquid and gas; transferring the propellant out of the tank; converting the mixture of liquid and gas propellant into a single phase, where the single phase is either liquid or gaseous; and supplying the single phase of the propellant to a thruster.

Abstract: A submersible system is provided having a submersible launch vessel that sends instructions from a mission controller to deploy one or more deployable systems for one or more underwater operations. The submersible launch vessel is submerged within a waterbody. A submersible power supply powers the submersible launch vessel and the one or more deployable systems. One or more communication devices is in communication with the mission controller, and the mission controller is located in one of a remote or a local location relative to the submersible launch vessel. The one or more deployable systems, via the one or more communication devices coupled to the submersible launch vessel, are remote controlled by the mission controller to execute the one or more underwater operations. Also, information associated with the one or more underwater operations including telemetry data is transmitted to the mission controller from the submersible launch vessel.

Abstract: A tracking and monitoring system and method includes a callback engine in communication with a plurality of GNSS-enabled ankle monitor bracelets via cellular/Wi-Fi internet service or SMS text service, depending on availability of services at each bracelet location. SMS text communication may be routed via a relay service. Bracelet straps form electrical circuits by which open, closed, cut, or shorted conditions are detected and relayed to the callback engine. Bracelets include components for detection of magnetic hacking, physical intrusion, software hacking, and GNSS spoofing. The callback engine may remotely update bracelet setting and cause playback of audio messages; bracelets confirm execution with the callback engine. Bracelets include advanced power saving circuitry and notify the callback engine of low battery levels.

Abstract: A tracking and monitoring system and method includes a callback engine in communication with a plurality of GNSS-enabled ankle monitor bracelets via cellular/Wi-Fi internet service or SMS text service, depending on availability of services at each bracelet location. SMS text communication may be routed via a relay service. Bracelet straps form electrical circuits by which open, closed, cut, or shorted conditions are detected and relayed to the callback engine. Bracelets include components for detection of magnetic hacking, physical intrusion, software hacking, and GNSS spoofing. The callback engine may remotely update bracelet setting and cause playback of audio messages; bracelets confirm execution with the callback engine. Bracelets include advanced power saving circuitry and notify the callback engine of low battery levels.

Abstract: A submersible system is provided having a submersible launch vessel that sends instructions from a mission controller to deploy one or more deployable systems for one or more underwater operations. The submersible launch vessel is submerged within a waterbody. A submersible power supply powers the submersible launch vessel and the one or more deployable systems. One or more communication devices is in communication with the mission controller, and the mission controller is located in one of a remote or a local location relative to the submersible launch vessel. The one or more deployable systems, via the one or more communication devices coupled to the submersible launch vessel, are remote controlled by the mission controller to execute the one or more underwater operations. Also, information associated with the one or more underwater operations including telemetry data is transmitted to the mission controller from the submersible launch vessel.

Abstract: To manage propellant in a spacecraft, the method of this disclosure includes storing propellant in a tank as a mixture of liquid and gas; transferring the propellant out of the tank; converting the mixture of liquid and gas propellant into a single phase, where the single phase is either liquid or gaseous; and supplying the single phase of the propellant to a thruster.

Abstract: A subsea garage (36) for a UUV comprises a body (12) having a receptacle for the UUV, an open top providing a transit path for the UUV into and out of the receptacle and a base opposed to the open top, the base being arranged to lie on the seabed. At least one post (22) is movable, subsea, relative to the body into a deployed position extending upwardly from the body above the open top. A lid (16) may also be movable relative to the body between a closed position that closes the open top and an open position that allows the UUV to move along the transit path through the open top. A fixed post may extend upwardly from the body above the open top, in which case the lid may enclose the post when in the closed position and expose the post when in the open position.

Abstract: A method provides power to a subsea equipment electrical system underwater, without a wet-mated electrical connection. The method includes temporarily coupling a rotary coupling element of a power source to the subsea equipment and turning that element to generate electric power on board the equipment. Subsea equipment that implements the method comprises: an on-board electric power generator connected to an electrical load such as a rechargeable battery to charge the battery when the generator is driven; and a rotary coupling element that is turned by an external drive to drive the generator. Alternative subsea equipment to implement the method comprises: a stator, but not a rotor, of an on-board electric power generator, which supplies current to the load when an externally-driven rotor is positioned adjacent to the stator and turned relative to the stator. A power source having a generator rotor is docked with the equipment for this purpose.

Abstract: A method of hosting an autonomous underwater vehicle (“AUV”) at a subsea location lowers at least one AUV basket to a subsea location adjacent at least one preinstalled subsea structure. The subsea structure has provision for electrical power to be provided to it. At the subsea location, the, or each, basket is connected to the, or each, subsea structure to receive electrical power from the subsea structure. Electrical power routed via the subsea structure may be used to charge batteries of an AUV docked with the basket. Provision may also be made to effect data communications with the AUV with data being communicated between the subsea structure and the basket.

Abstract: A method of hosting an autonomous underwater vehicle (“AUV”) at a subsea location lowers at least one AUV basket to a subsea location adjacent at least one preinstalled subsea structure. The subsea structure has provision for electrical power to be provided to it. At the subsea location, the, or each, basket is connected to the, or each, subsea structure to receive electrical power from the subsea structure. Electrical power routed via the subsea structure may be used to charge batteries of an AUV docked with the basket. Provision may also be made to effect data communications with the AUV with data being communicated between the subsea structure and the basket.