TERMIUM Plus®

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OPERATION SPACE VACUUM [3 records]

Record 1 2007-07-23

English

Subject field(s)
  • Orbital Stations
  • Research Experiments in Space
CONT

The Microgravity Science Glovebox(MSG) is a joint development project between NASA and the European Space Agency(ESA). The double rack unit is a versatile research facility designed to permit the flexibility of crew-manipulated investigations. Its configuration has been planned around the concept of an experimental workstation where a variety of experiments can be installed and operated in a fashion very similar to their operation in a ground-based laboratory.... Specifically, the facility provides a large enclosed work volume, power, video, photography, vacuum connections, heat rejection, stowage, filtered air, gaseous nitrogen, lighting, airlock access, physical positioning and hold-down attachments, and computer data acquisition and control capabilities.

CONT

The MSG [Microgravity Science Glovebox] is a containment facility designed for supporting a wide range of microgravity science investigations and demonstrations. In the sealed mode, the MSG serves as a single level of containment by providing a physical barrier. In the air circulation mode the MSG serves as a one failure tolerant containment by providing a physical barrier and a negative pressure relative to the cabin. The MSG further facilitates investigations by providing many of the resources that are typically used by microgravity science investigations.

OBS

microgravity science glovebox; MSG: term and abbreviation officially approved by the International Space Station official approval Group (ISSOAG).

French

Domaine(s)
  • Stations orbitales
  • Travaux de recherche dans l'espace
CONT

La boîte à gants permettra aux astronautes à bord de la Station spatiale internationale de procéder à de nombreuses expériences dans le domaine des matériaux, de la combustion, des fluides et de la technologie et de conduire des études sur l'environnement en microgravité. Elle devrait être lancée dans le mini-module logistique pressurisé en mai 2002. Cette installation scientifique offre un volume de travail clos et étanche ; elle est équipée de branchements pour l'éclairage, les dispositifs mécaniques, l'électricité, les données, le gaz et le vide et d'une régulation thermique pour mener à bien les expériences. On accède au volume de travail par des gants intégrés qui isolent l'expérience de l'environnement et de l'opérateur. La MSG [Microgravity Science Glovebox] est montée dans un bâti de charge utile international normalisé (ISPR) ; elle peut être utilisée en mode ouvert, l'air circulant alors du volume de travail vers la cabine de la Station spatiale, ou en mode fermé, l'air ne circulant qu'à l'intérieur de la MSG. De plus, la boîte à gants est capable de maintenir une atmosphère inerte avec de l'azote sec, le volume d'oxygène restant alors égal ou inférieur à 10 %.

OBS

boîte à gants; MSG : terme et abréviation uniformisés par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

Spanish

Save record 1

Record 2 2004-02-10

English

Subject field(s)
  • Equipment (Chemistry)
  • Refrigeration Engineering
  • Biotechnology
DEF

A vessel having double walls, the space between being evacuated to prevent the transfer of heat and the surfaces facing the vacuum being heat-reflective; used to hold liquid gases and to study low-temperature phenomena.

CONT

The cryogenic Dewar vessel is a flask-in-flask reservoir. The interwall space is filled with multilayer insulation and evacuated. High vacuum is maintained for a long time, which secures stable technical data throughout the whole operation period. The inner and outer vessels are made of aluminium alloy.

Key term(s)
  • Dewar container

French

Domaine(s)
  • Équipement (Chimie)
  • Techniques du froid
  • Biotechnologie
DEF

Récipient à doubles parois, entre lesquelles on a fait le vide, servant à conserver un gaz liquéfié à très basse température, ou à constituer un cryostat.

Key term(s)
  • récipient de Dewar

Spanish

Campo(s) temático(s)
  • Equipo (Química)
  • Ingeniería de refrigeración
  • Biotecnología
DEF

Usado para conservar líquidos muy fríos, verbigracia, aire líquido, oxígeno líquido, etc. Tiene doble pared y entre las dos que lo forman se ha hecho el vacío. Para reflejar todo calor se platea.

CONT

[...] Enfriamos la trampa hasta los cuatro kelvins mediante el contacto térmico con helio líquido en el interior de un frasco dewar, recipiente con aislamiento al vacío semejante a un termo.

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Record 3 2002-02-22

English

Subject field(s)
  • Electronic Components
DEF

Electronic component whose operation does not require current to pass through a space or a vacuum.

OBS

As a direct result, power needed to push current through the element is greatly reduced, and there is often no need for special cooling because there is very little heat built up.

French

Domaine(s)
  • Composants électroniques

Spanish

Campo(s) temático(s)
  • Componentes electrónicos
DEF

Elemento electrónico cuyas operaciones no requieren que la corriente atraviese espacios ni vacíos.

OBS

Como resultado directo de ello, se reduce grandemente la fuerza necesaria para empujar la corriente a través de los mismos y no es necesario un enfriamiento especial, ya que la acumulación de calor es mínima.

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