TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

An instrument located at the Fred Lawrence Whipple Observatory on Mount Hopkins, Arizona, at an altitude of 2, 606 m(8, 550 ft). It employed six mirrors, each 1. 82 m(72 in.) across, working together to give the equivalent of a single mirror 4. 45 m(176 in.) in aperture. In 1998, the MMT was used in a pioneering demonstration of nulling interferometry to image the dust cloud around Betelgeuse. Following this, the telescope was closed and work began to upgrade it by replacing the 6 small mirrors with a single mirror 6. 5 m in diameter.  2, record 1, English, - multiple%20mirror%20telescope

Record number: 1, Textual support number: 1 OBS

The MMT kept its original name after it was converted to a single 6.5m diameter mirror on May 20, 2000.  3, record 1, English, - multiple%20mirror%20telescope

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

L'observatoire d'astrophysique Smithsonian et l'Université d'Arizona présentèrent, en 1979, un tout nouveau type de télescope: le MMT ("Multiple-Mirror Telescope", ou télescope à miroir multiple). Installé sur le mont Hopkins en Arizona, le MMT se compose de 6 miroirs de 183 cm (72"), disposés en hexagone et alignés par ordinateur.  3, record 1, French, - t%C3%A9lescope%20%C3%A0%20miroir%20multiple

Record number: 1, Textual support number: 1 OBS

Il existe d'autres types de télescopes à miroirs multiples : le télescope Keck, situé à l'observatoire du Mauna Kea, à Hawaii, aux États-Unis, est constitué de 36 petits miroirs hexagonaux de 90 cm. Le télescope spatial James Webb (JWST), dont le lancement est prévu pour 2010, sera constitué de 18 miroirs de 6.5 mètres.  4, record 1, French, - t%C3%A9lescope%20%C3%A0%20miroir%20multiple

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

In a three-axis four-gimbal inertial platform, there is a small misalignment angle, [delta], between the pitch and inner roll gimbals. The problem... is to drive this angle equal to zero. This involves designing a control loop for nulling [delta]. By properly designing the control system, an orthogonality loop can maintain the angle [delta] near zero for reasonable values of pitch angle.  1, record 2, English, - three%2Daxis%20four%2Dgimbal%20inertial%20platform

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 OBS

Gyroscopes avec deux axes et deux anneaux de cardan.  2, record 2, French, - plate%2Dforme%20inertielle%20%C3%A0%20trois%20axes%20et%20quatre%20anneaux%20de%20cardan

Record number: 2, Textual support number: 2 OBS

Plate-forme à trois axes.  3, record 2, French, - plate%2Dforme%20inertielle%20%C3%A0%20trois%20axes%20et%20quatre%20anneaux%20de%20cardan

Record number: 2, Textual support number: 3 OBS

Pluriel : des plateformes, des plates-formes.  4, record 2, French, - plate%2Dforme%20inertielle%20%C3%A0%20trois%20axes%20et%20quatre%20anneaux%20de%20cardan

Record number: 2, Textual support number: 4 OBS

plateforme (sing.); plateformes (pl.) : Ces graphies, puisées des Rectifications de l'orthographe recommandées par le Conseil supérieur de la langue française, sont attestées dans le Petit Robert (2004).  5, record 2, French, - plate%2Dforme%20inertielle%20%C3%A0%20trois%20axes%20et%20quatre%20anneaux%20de%20cardan

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

During the first phase of rapid alignment, the platform pitch gimbal is primarily controlled by the pitch component of the liquid level signals. The platform pitch gimbal erects to the vertical by nulling this component.  1, record 3, English, - platform%20pitch%20gimbal

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

Durant la première phase de l'alignement rapide, le cardan de tangage de la plate-forme est surtout commandé par la composante de tangage des signaux des niveaux à liquide. L'érection à la verticale du cardan de tangage est provoquée en annulant cette composante.  1, record 3, French, - cardan%20de%20tangage%20de%20la%20plate%2Dforme

Record number: 3, Textual support number: 1 OBS

Pluriel : des plateformes, des plates-formes.  2, record 3, French, - cardan%20de%20tangage%20de%20la%20plate%2Dforme

Record number: 3, Textual support number: 2 OBS

plateforme (sing.); plateformes (pl.) : Ces graphies, puisées des Rectifications de l'orthographe recommandées par le Conseil supérieur de la langue française, sont attestées dans le Petit Robert (2004).  3, record 3, French, - cardan%20de%20tangage%20de%20la%20plate%2Dforme

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

The audio processing section consists of :...(c) A servomotor to drive the antenna casting to obtain electromechanical nulling of the resolver...  1, record 4, English, - nulling

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 OBS

Pour retrouver l'extinction, il faut tourner l'antenne de l'angle E (...)  1, record 4, French, - trouver%20le%20point%20nul

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

Nulling resistance bridge.  1, record 5, English, - nulling

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

Résistance à pont revenant à zéro.  1, record 5, French, - revenant%20%C3%A0%20z%C3%A9ro

Record 5,  Textual support,  Spanish