Abstract:
This motor includes: a translationally movable induction coil; a power-supply circuit adapted to deliver, to at least one induction coil, an AC power-supply current; a movable mass adopting a translational movement an induction coil arranged so as to move a respective movable mass between a first position and a second position where the movable mass can compress the fluid; a secondary circuit arranged to connect the terminals of at least one induction coil in short-circuit;The secondary circuit comprises a compensation component for producing a phase shift between the power-supply voltage and the power-supply current, so as to reduce the phase difference that the inductance of the induction coil produces.
Abstract:
The invention relates to a method for fixing an item of equipment to the inner surface of a wall of a cryogenic fluid line or a tank and in particular a tank intended to contain liquid oxygen, the method being characterized in that a layer of porous material is interposed between the wall and the item of equipment.
Abstract:
A cryogenic tank for a space launcher, comprising a partition and delimiting top and bottom volumes communicating via at least one free central opening formed in the partition, so as, on the one hand, to allow for the flow of liquid by gravity from the top volume to the bottom volume via the central opening or openings and, on the other hand, to prevent the rising of the fluid from the bottom volume to the top volume via the central opening or openings under the action of acceleration forces, the tank also comprising at least one vent forming separate from the central opening or openings and providing fluid communication between the top and bottom volumes, the vent being configured to favor the migration of vapor from the bottom volume to the top volume and to prevent the rising of liquid from the bottom volume to the top volume.
Abstract:
The invention relates to a method for fixing an item of equipment to the inner surface of a wall of a cryogenic fluid line or a tank and in particular a tank intended to contain liquid oxygen, the method being characterized in that a layer of porous material is interposed between the wall and the item of equipment.
Abstract:
A linear electrodynamic-type motor, for compressing a fluid circulating in a cryocooler notably using a Stirling cycle, includes a translationally movable induction coil; a power-supply circuit adapted to deliver, to at least one induction coil, an AC power-supply current; a movable mass adopting a translational movement; an induction coil arranged so as to move a respective movable mass between a first position and a second position where the movable mass can compress the fluid; and a secondary circuit arranged to connect the terminals of at least one induction coil in short-circuit. The secondary circuit comprises a compensation component for producing a phase shift between the power-supply voltage and the power-supply current, so as to reduce the phase difference that the inductance of the induction coil produces.
Abstract:
A cryogenic tank for a space launcher, comprising a partition and delimiting top and bottom volumes communicating via at least one free central opening formed in the partition, so as, on the one hand, to allow for the flow of liquid by gravity from the top volume to the bottom volume via the central opening or openings and, on the other hand, to prevent the rising of the fluid from the bottom volume to the top volume via the central opening or openings under the action of acceleration forces, the tank also comprising at least one vent forming separate from the central opening or openings and providing fluid communication between the top and bottom volumes, the vent being configured to favor the migration of vapor from the bottom volume to the top volume and to prevent the rising of liquid from the bottom volume to the top volume.
Abstract:
The user interface is configured for playing media and includes (i) a media control interface for controlling functions related to playing the media, and (ii) a display object for displaying in an integrated web browser information related to the media. The user interface is configured to communicate with a communications network.
Abstract:
The system delivers a continuous sequence of individual pieces of media information over a communications network to a group of users that selected said media information. The system includes at least one server that transmits the continuous sequence of individual pieces of media information at approximately the same time to each user in the group. The system also includes an application configured to generate a user interface screen. The User interface screen includes a list of available media information, a program guide containing information relating to the media information selected by a user, and an object configured to allow a user to initiate a purchase of a product. Finally, the system includes at least one server configured to maintain an audit log that records data. The records data includes how many users received the particular media information, times at which users received the particular media information, the total bytes of said media information transmitted to each user, the composition of said media information, and the identity of users.