Abstract: A controlled environment system for the additive manufacture of metal objects using magnetohydrodynamic jetting. A sealing plate is placed against an Péclet gap seal of a volume enclosure. A flow of inert gas is used to maintain a high-purity volume in the interior of the volume enclosure. A print head accesses the interior and delivers build material through a hole in the sealing plate. A build plate is movable relative to the sealing plate within the interior of the volume enclosure on which objects can be fabricated.

Abstract: A canister is coupled to a delivery vehicle using a rail bracket. The canister comprises a securing channel having a first securing channel volume and a second securing channel volume. A width of the first securing channel volume is less than a width of the second securing channel volume. The rail bracket comprises a rotational shaft having a finger at one end. The rail bracket is inserted into the securing channel, and the rotational shaft is rotated. When rotated, the finger inhibits removal of the rail bracket from the securing channel, thereby providing a mechanism by which the canister can be releasably coupled to the rail bracket. The rail bracket may be provided on a delivery vehicle, such as an unmanned aerial vehicle (UAV) to transport the canister and contents within it.

Abstract: A landing system suitable for receiving an unmanned aerial vehicle (UAV) comprises an autonomous ground vehicle (AGV). A landing surface is disposed on the AGV, and the landing system comprises a loading channel suitable for passing an object delivered by the UAV through a first loading channel opening in the landing surface. The object passes within the loading channel through to a second loading channel opening at a bottom aspect of the AGV. In this way, a UAV can land on the landing surface, and the AGV positions the object in line with a target delivery location, where the object is delivered. Aspects of the landing system comprise an electromagnet or vacuum chamber for securing the UAV to the landing surface, thereby enhancing stability of the UAV during movement of the landing system.

Abstract: A thermally controlled payload container for carrying payloads by an Unmanned Aerial Vehicle (UAV) comprising an inner wall and an outer wall. The inner wall forms a chamber having an open end and a closed end. The payload container also comprises a thermal control body adjacent to the inner wall and disposed between the inner wall and the outer wall. The payload container also comprises a thermoelectric cooler (TEC) extending through the outer wall from a first side of the TEC to a second side of the TEC, the first side adjacent the thermal control body and the second side coupled to an external heat sink.

Abstract: A payload container for delivering canisters having payloads is provided. The payload container includes an open end and a closed end. The open end is configured to couple to a terminal end of a tube of a pneumatic delivery system to receive or provided a canister. The payload container further comprises a gas vent having a first gas vent opening located at the closed end of the payload container and a second gas vent opening located at the open end of the payload container. The open end is configured to couple to an air hose outlet of the pneumatic delivery system, which delivers air into the payload container to push the canister into the pneumatic delivery system tube. A depressed landing platform aids in guiding an unmanned aerial vehicle, having a payload container, into a position where a canister can be delivered to or from the pneumatic delivery system.

Abstract: A landing gear system that can be used with unmanned aerial vehicles (UAVs) retrieves and releases canisters suitable for delivering items. To do so, the landing gear comprises a first leg and a second leg. The first landing leg and the second landing leg are rotationally engages at a first leg connection end and a second leg connection end. A tensioning member applies a rotational force about the engagement location, biasing the first leg toward the second leg. Each of the first and second legs can include a curved portion. A UAV comprising the landing gear can be lowered over a canister, and the canister is secured in place within the curved portions of the legs. To release, the landing legs are rotated against the bias, which can be facilitated by landing the UAV and placing the rotors into a reverse thrust.

Abstract: A pneumatic delivery system is used to facilitate delivery of canisters comprising delivery payloads by unmanned systems, such as unmanned aerial vehicles (UAVs). The pneumatic delivery system comprises a tube having a channel within a tube wall, where a canister is configured to move through the tube. The tube comprises a tube opening and a transfer mechanism proximate the tube opening. The transfer mechanism engages a canister having a payload that is moved within the tube. The transfer mechanism moves the canister through the tube opening by extending from a first transfer position to a second transfer position. At the second transfer position, the transfer mechanism orients the tube and releases it to a UAV for delivery.

Abstract: A case for carrying loads by an Unmanned Aerial Vehicle (UAV) comprises a first end comprising a first cap and a first opening and a second end comprising a second cap and a second opening, the second opening being smaller than the first opening. The case also comprises a rechargeable battery pack that, when the case is secured to the UAV, is configured to provide a power source for the UAV and the first cap and the second cap each comprising at least one metal connector for providing power to the UAV.

Abstract: An intelligent container system is provided that accommodates a variety of sizes and shapes of parcels, and that allows the parcels to be dispensed from the container one at a time, in any order. The container system has an open face, such as the bottom. A first panel cooperates with a second panel to selectively close the open bottom, and to selectively open the bottom below a desired parcel, allowing the parcel to be individually dispensed when desired. The container system has a plurality of dividers that can be moved along the length of the container to create a series of compartments that match the sizes of the parcels within the compartments. A position sensing system is used to determine the location of the dividers, and thus the location of the compartments.

Abstract: A dross removal system for magnetohydrodynamic additive. A vacuum source is used to create a pressure differential at a nozzle opening sufficient to collect dross from a pool of molten metal. The dross and any collected molten metal can be captured in a waste bin for later disposal.

Abstract: A controlled environment system for the additive manufacture of metal objects using magnetohydrodynamic jetting. A sealing plate is placed against an Péclet gap seal of a volume enclosure. A flow of inert gas is used to maintain a high-purity volume in the interior of the volume enclosure. A print head accesses the interior and delivers build material through a hole in the sealing plate. A build plate is movable relative to the sealing plate within the interior of the volume enclosure on which objects can be fabricated.

Abstract: An improved additive manufacturing system for manufacturing metal parts by magnetohydrodynamic printing liquid metal. A monitoring system including at least one camera capturing light reflected from a strobe light source. Images of the droplets are captured during their jetting and analyzed to determine whether the jetting performance is meeting specifications. A nozzle of the system has a nozzle bottom and a nozzle stem extending outward therefrom on which a meniscus of liquid metal can form. The nozzle is cleaned by bringing a ceramic rod in the vicinity of the nozzle and jetting a bead of metal which is rotated against the nozzle to remove an amount of dross.

Abstract: A nozzle assembly for metal additive manufacturing using magnetohydrodynamic jetting. A nozzle defines a reservoir and a discharge region having a discharge orifice. A thick film heating system disposed on an exterior of the nozzle and including a first contact pad and a second contact pad connected by a heating pathway heats build material in the nozzle to a liquid state. A first electrode and a second electrode together configured to deliver an electrical current through the liquid build material in the discharge region while a magnet system delivers a magnetic field perpendicular the electrical current, thereby jetting liquid metal to form successive build layers.