TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 CONT

The Binary Colloidal Alloy Test-3 is an Exploration Systems’ transition flight experiment in the Human System Research and Technology area. BCAT-3 provides a unique opportunity to explore fundamental physics and simultaneously develop important future technology, including computers operating on light, complex biomolecular pharmaceuticals, clean sources of geothermal power, and novel rocket engines for interplanetary travel. These studies depend entirely on the microgravity environment provided by the International Space Station (ISS); in all other locations accessible to science, gravity dominates and precludes investigation of any other effects of interest. The experiment itself [consists of] photographing samples of colloidal particles with a digital camera onboard the ISS. Colloids are tiny nanoscale spheres of plexiglass a thousand times smaller than the width of a human hair (submicron radius) that are suspended in a fluid. They are ubiquitous (e.g., milk, smoke, and paint) and therefore interesting to study directly. Colloids are also small enough that they behave much like atoms and so can be used to model all sorts of phenomena because their size, shape, and interactions can be controlled. The 10 samples in BCAT-3 are made from the same ingredients, each a recipe with different proportions, and are grouped into three experiments: critical point, binary alloy, and surface crystallization. [Text followed by an illustration of a BCAT-3 sample holder.]  4, fiche 1, Anglais, - binary%20alloy%20colloidal%20test

Record number: 1, Textual support number: 2 CONT

BCAT-3 is comprised of three separate experiments, which are individually referred to as a binary alloy(BCAT-3-BA), surface crystallization(BCAT-3-SC) and critical point(BCAT-3-CP). The critical point investigation is continuing with additional samples on future ISS [International Space Station] expeditions and will be referred to as Binary Colloidal Alloy Test-4. BCAT-4 will consist of two sets of samples referred to as BCAT-3 and 4 : Critical Point(BCAT-3-4-CP) and BCAT-4 : Polydisperse(BCAT-4-Poly).... The Binary Colloidal Alloy Test-3(BCAT-3) hardware supported three investigations in which ISS crews photographed samples of colloidal particles(tiny nanoscale spheres suspended in liquid) to document liquid/gas phase changes, growth of binary crystals, and the formation of colloidal crystals confined to a surface. Colloids are small enough that in a microgravity environment without sedimentation and convection, they behave much as atoms and so can be used to model all sorts of phenomena because their size, shape, and interactions can be controlled. The BCAT-3 payload consists of ten small samples of colloid alloys in which the microscopic colloid particles are mixed together into a liquid. These ten samples are contained within a small case that is the size of a school textbook. At the start of an experiment run, all ten samples are shaken to completely remix the colloid samples, much in the same way that salad dressing must be shaken to remix oil and vinegar. After the samples are mixed, what remains is periodically photographed using a digital camera until the colloid and liquid components of those samples have separated or the polymers have formed crystals. The samples can be remixed to repeat the experiment. The ten samples in BCAT-3 were selected as part of three separate experiments examining different physical processes : critical point, binary alloys, and surface crystallization.  5, fiche 1, Anglais, - binary%20alloy%20colloidal%20test

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 OBS

Contexte: recherches en microgravité sur les structures colloïdales; test avec alliages binaires (c'est-à-dire composés de deux éléments) mis à l'état colloïdal.  2, fiche 1, Français, - test%20BACT

Record number: 1, Textual support number: 2 OBS

test BACT (croissance d'alliages binaires à partir de particules colloïdales en suspension) : il faut articuler le syntagme pour rendre compte de la réalité du texte où il est question de la croissance de cristaux binaires qui se développent à partir de particules colloïdales en suspension dans un liquide.  1, fiche 1, Français, - test%20BACT

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 CONT

Systems Analysis of a Future Semi-Reusable Launcher, Based on a High Thrust Bleed Cycle Rocket Engine. In this paper a high thrust, cryogenic bleed cycle engine, to be used for propulsion of future reusable booster stages(liquid fly back boosters), of an expendable heavy lift launcher, is analyzed. The system configuration remains unchanged, in terms of total available fuel and the number of engines, hereas the variation of the engine parameters result in a change of total system mass and payload capacity. Different arrangements of bleed cycles are being analyzed, and compared with each other. The paper describes a simplified heat transfer model, used in the analysis of the suggested cycles. The thrust chamber design is discussed and a preliminary design of the booster vehicle, including a trajectory analysis, is presented.  3, fiche 2, Anglais, - semi%2Dreusable%20launcher

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 CONT

Cinq navettes furent construites [...] pour remplacer Challenger [...] Au départ ce devait être un lanceur récupérable. Mais les coûts exorbitants obligèrent les responsables à le transformer en un lanceur semi-récupérable. Le gros réservoir est devenu un élément ordinaire. Seuls l'orbiteur et les propulseurs auxiliaires sont récupérés.  1, fiche 2, Français, - lanceur%20semi%2Dr%C3%A9cup%C3%A9rable

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 OBS

The Payload Support Center(PSC) is being implemented at the CSA [Canadian Space Agency] to conduct payload activities such as communication protocols verification and procedure validation & verification. The PSC will support crew training and mission simulations. The results of the PSC and DFL tests will be used in the final certification of a payload. In addition, the PSC will play an important role during the on-orbit operation of a payload. The payload flight backup unit or engineering model will be installed in the PSC and will be available to help the payload operators in case of any on-orbit problem. By using a duplicate of the payload in the PSC, the operators, with the help of the technical team, will be able to duplicate the situation and determine the proper corrective procedures. Those procedures will then be either forwarded to the on-orbit crew or to the ground operations personnel to correct the anomaly. The PSC includes the EXPRESS Rack Simulator, the Suitcase Simulator(when required), a workbench area for payload developers and a connection to the CSA Payload Telescience Operations Center(PTOC).  1, fiche 3, Anglais, - Payload%20Support%20Center

Record number: 3, Textual support number: 2 OBS

Payload Support Center; PSC: term and abbreviation officially approved by the International Space Station official approval Group (ISSOAG).  2, fiche 3, Anglais, - Payload%20Support%20Center

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 OBS

[...] le Centre de soutien de mission de charges utiles (PMSC) qui se situe au Centre spatial John H. Chapman de l'Agence spatiale canadienne à Saint-Hubert, Québec [...] se compose du Centre de soutien de charges utiles (PSC) et du Centre de télé-exploitation de charges utiles (PTOC). Le PSC a été mis sur pied pour appuyer les activités de certification et d'intégration des charges utiles canadiennes. L'installation permet aux développeurs de charges utiles, aux chercheurs principaux et au personnel chargé de l'exploitation au sol de suivre une formation sur le fonctionnement de leurs charges utiles, de vérifier les procédures d'exploitation et les protocoles de communications, de simuler des missions et d'appuyer des opérations de charges utiles en temps réel à partir de leur poste d'exploitation au sol. Le PSC servira également à l'intégration des échantillons et à des tests de vérifications d'échantillons.  2, fiche 3, Français, - Centre%20de%20soutien%20des%20charges%20utiles

Record number: 3, Textual support number: 2 OBS

Centre de soutien des charges utiles; PSC : terme et abréviation uniformisés par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).  3, fiche 3, Français, - Centre%20de%20soutien%20des%20charges%20utiles

Fiche 3,  Justifications,  Espagnol

Fiche 4,  Justifications,  Anglais

Record number: 4, Textual support number: 1 CONT

The Polar Platform activities are proceeding according to plan. Manufacture of the Service Module flight-model structure is well advanced and should be completed by end-1994. Integration of the flight model will start in early 1995. Availability of the Payload Module structural model has been delayed due to manufacturing difficulties.  2, fiche 4, Anglais, - service%20module%20flight%20model%20structure

Fiche 4,  Justifications,  Français

Fiche 4,  Justifications,  Espagnol

Fiche 5,  Justifications,  Anglais

Record number: 5, Textual support number: 1 CONT

Integration of the Payload Equipment Bay engineering model has started, and integration of the proto-flight Service Module will commence soon. The structure of the proto-flight payload carrier has been completed and is undergoing qualification static testing at CASA in Spain.  2, fiche 5, Anglais, - qualification%20static%20testing

Fiche 5,  Justifications,  Français

Fiche 5,  Justifications,  Espagnol