摘要:
L'invention a pour objet une structure composite comprenant une résine organique et des fibres de carbone, caractérisée en ce qu'elle comprend en outre des nanofeuillets de structure plane de graphène noyés dans ladite résine. Cette structure combinant de bonnes propriétés en termes de tenue mécanique, de conductivité thermique et de conductivité électrique peut avantageusement être utilisée pour des dispositifs de dissipation thermique, comme substrat de générateur solaire ou bien encore comme boîtier de composants électroniques, embarqués dans des satellites.
摘要:
L'invention vise un générateur photovoltaïque (12a, 12b) déployable pour satellite (10) de type stabilisé trois axes, ledit générateur photovoltaïque (12a, 12b) comportant un ensemble de panneaux plans (20, 21) articulés les uns par rapport aux autres, et un bras d'attache (18a, 18b) à la structure d'un corps (11) de satellite (10), ledit générateur photovoltaïque (12a, 12b) pouvant adopter une première position, dite position de lancement, dans laquelle les panneaux plans (20, 21 ) sont repliés les uns sur les autres, et une seconde position, dite position déployée, dans laquelle les panneaux plans (20, 21) sont totalement déployés, au moins une partie des panneaux plans (20) étant des panneaux photovoltaïques. Au moins un panneau plan (21) est constitué d'un radiateur thermique, sa face radiative étant orientée de façon opposée à la face des panneaux photovoltaïques portant les capteurs photovoltaïques, lorsque le générateur photovoltaïque (12a, 12b) est en position déployée, cette face radiative étant dite face « ombre », et la face opposée du panneau formant radiateur (21) étant dite face « soleil ».
摘要:
A heat transfer assembly (HTA) includes an equipment panel having a first longitudinal length and a first radiator panel that is coupled to one of an east end and a west end of the equipment panel. The first radiator panel is longer in the longitudinal direction than the equipment panel and has least one longitudinal heat pipe. The HTA also includes at least one flexible heat pipe having a first rigid tube coupled to the equipment panel, a second rigid tube thermally coupled to the first longitudinal heat pipe, and a flexible tube coupled between the first and second rigid tubes. The equipment panel is configured to retain an equipment module in thermal contact with the first rigid tube.
摘要:
The thermal control device comprises at least one capillary pumped diphasic fluid loop (1), comprising, in a known manner, an evaporator (2) extracting the heat from a source known as hot (A) and connected via a steam pipe (4) to a condenser (3) wherein the condensation of the fluid steam releases a thermal energy transmitted to a source known as cold (B), the condenser (3) being connected via a pipe of liquid (7) to the evaporator (2), and the device moreover comprises at least one heat capacity (17) in relation to permanent heat exchange with the fluid in liquid phase of said diphasic fluid loop (1). Use in particular with space vehicles such as satellites.
摘要:
L'invention concerne un engin spatial (1) comprenant : - un boitier (2) délimitant un espace intérieur et un espace extérieur, le boitier ayant une première face et une seconde face opposée à la première face, - un premier radiateur (16) et un second radiateur (18) portés par la première face et respectivement la seconde face, le premier radiateur (16) et le second radiateur (18) ayant chacun une face principale interne, une face principale externe opposée à la face principale interne et des faces latérales (19). L'engin spatiale (1) comporte en outre un premier radiateur auxiliaire (32) et un premier dispositif de transfert thermique auxiliaire (34) reliant thermiquement ledit premier radiateur auxiliaire (32) à la face principale interne du second radiateur (36), le premier radiateur auxiliaire (18) étant agencé dans une première portion de l'espace extérieur (13), ladite première portion étant délimitée par la face principale externe du premier radiateur et par des premiers plans (48, 50, 52, 54) contenant les faces latérales (19) du premier radiateur.
摘要:
An instrument mounting system for a geosynchronous host satellite provides independent heat rejection capability for a hosted instrument. The system may include an instrument mounting structure that is thermally coupled to a radiator component via heat pipes that may include one or both of rigid and flexible elements. In some embodiments, the system is mounted on the hosting satellite so as to provide satellite components and the hosted instrument with a clear field of view while rejecting heat in one or both of the north and south directions. The system may also provide structural support for components of one or both of the hosted instrument or the hosting satellite.
摘要:
A spacecraft is provided. The spacecraft comprises a plurality of heat generating electrical components. A first thermal radiator panel and a second thermal radiator panel are provided on the spacecraft, each panel being thermally coupled to the heat generating electrical components. Heat pipes are also provided. At least one first heat pipe is externally attached to the first thermal radiator panel and at least one second heat pipe is externally attached to the second thermal radiator panel. The at least one first heat pipe is thermally coupled to the at least one second heat pipe.
摘要:
A cooling apparatus (10) includes a housing defined by two aluminum parts (12, 13) which are brazed to each other. A plurality of sector-shaped recesses (21-28) are provided within the housing, and collectively define a chamber having a plurality of ribs (41-48) extending therethrough. Each recess contains a sector-shaped piece of porous material (17, 18), which is brazed to surfaces of the housing parts. The remaining space within the chamber is filled with a phase change material. Each of the ribs has therein a respective radially extending opening (101-108) which contains a heat pipe (141). Expansion accumulators (151) are mounted on the housing, and communicate with the chamber therein, in order to accommodate expansion of the phase change material within the chamber as the phase change material is heated.
摘要:
A thermal control system (10) for use in a mobile craft is disclosed. The thermal control system (10) generally includes a structure (14) for supporting one or more heat sources (18), such as electronic equipment and at least a first heat pipe (22) contained within the structure (14), the first heat pipe (22) being capable of transferring heat energy from the heat sources (18) toward an outboard surface (28) of the structure (14) and/or inhibiting such transfer of heat energy to the outboard surface (28) of the structure (14), in order to maintain the heat source(s) substantially at room temperature during operation of such electronic equipment.
摘要:
A lightweight photovoltaic concentrator is disclosed. The concentrator comprises at least two (hinged) sections each comprising a cell panel (332), a radiator panel (320) and a reflector panel (310). The solar cell panel (332) comprises at least one photovoltaic cell for generating electrical power in response to radiation. The solar cell panel (332) is aligned with the radiator panel (320) at an angle less than 180 degrees but not less than 90 degrees facing the reflective concentrator panel (310). In another embodiment, the cell panels (332) on adjoining sections are angled in opposite directions with respect to the radiator panels (320) and wherein the reflective concentrator panels (310) are located on opposite sides of the radiator panels (320). A heat pipe (350) or loop heat pipe is located in the radiator panel (320) to dissipate heat from the solar cells (330).