TERMIUM Plus®

From: Translation Bureau

On social media

Consult the Government of Canada’s terminology data bank.

ZENITH TRUSS [6 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2005-03-08

English

Subject field(s)
  • Orbital Stations
CONT

The first segment to be launched into orbit, designated Z1, will not permanently attach to other truss segments. The Z1 segment is a 10 ft (3 m) cubelike truss made from six machined bulkheads that are bolted together. The truss houses four control moment gyroscopes that form part of the guidance, navigation, and control system. The location of Z1 is nearly in the middle of the station, which makes it an ideal location for the gyroscopes. A micrometeor shield composed of three sheets of 0.25 in. (6 mm) aluminum about 5 in. (127 mm) apart protects the sensitive gyroscopes from debris. The 18,300 lb (8,300 kg) Z1 segment is currently scheduled to be launched by the end of this year. The truss is a transitional structure that will connect to the pressurized Unity module already on orbit. Astronauts will tighten 16 motorized bolts on the circular coupling on the Unity module side into nuts on Z1 and connect the associated utility plug-ins. Pressurized units generally have circular couplings and nonpressurized unit connectors are rectangular.

CONT

The Z1 truss segment is equipped with several spacewalk aids: Two EVA tool stowage devices (ETSDs), 22 worksite interface (WIF) sockets, 1 flight-releasable grapple fixture (FRGF), 11 trusses, 2 tray launch restraints, numerous standard handholds and handrails, and several custom handles.

OBS

The first piece of truss structure-we refer to it as the Z1 Truss because it is the zenith or uppermost-will be on the uppermost part of the station or the top; the zenith.

OBS

Z1 truss; integrated truss structure Z1; Z1; ITS-Z1: terms and abbreviations officially approved by the International Space Station official approval Group (ISSOAG).

PHR

Z1 keel pin assembly, truss latch.

French

Domaine(s)
  • Stations orbitales
CONT

[...] l'élément de structure Z1 [est une] pièce unique en son genre. Il s'agit d'un élément de structure externe à l'intérieur duquel se trouvent des gyroscopes et du matériel de télécommunication et qui servira plus tard de plate-forme de montage des immenses panneaux solaires qui alimenteront la Station spatiale internationale en électricité.

CONT

Z1 est une plate-forme de communication [qui] supporte des systèmes de communication en bande Ku et S. Le système en bande Ku permet une transmission de données à haut-débit vers le sol, à la vitesse de 50 Mbps Mégabits par secondes). C'est suffisant pour transmettre 4 signaux vidéo en même temps. Ce système servira donc pour la liaison télévisée, mais aussi pour le fret à bord.

OBS

poutre Z1; segment de poutre intégrée Z1; Z1; ITS-Z1 : termes et abréviations uniformisés par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

PHR

Structure Z1 porteuse de la poutrelle.

PHR

Structure en treillis Z-1.

Spanish

Save record 1

Record 2 2003-10-08

English

Subject field(s)
  • Orbital Stations
CONT

The Z1(Zenith) truss will serve as the support structure for the power platform P6.... In addition the Z1 contains the Control Movement Gyroscopes(CMGs) which will be used for attitude control of the whole complex and the huge SGANT antenna and dish, to be activated after the arrival of the US laboratory Destiny, which will return high speed data and TV to Earth.

OBS

space-to-ground antenna; SGANT antenna: terms officially approved by the International Space Station official approval Group (ISSOAG).

PHR

Space-to-ground (SGANT) antenna dish.

French

Domaine(s)
  • Stations orbitales
OBS

antenne espace-sol : terme uniformisé par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

Spanish

Save record 2

Record 3 2003-03-06

English

Subject field(s)
  • Orbital Stations
CONT

Express Pallet. The ExPS is an unpressurized external equipment which, by means of adapter mechanisms, will support external payloads. Each ExPS will accommodate up to six payloads of up to 225 kg for a total launch of 1,36 tons. For each one of them it will be supplied power and data. The adapters will be fully compatible with external robotics operations (EVR) and with crew external activities (EVA). The full up ExPS will be compatible with robotics operations for removal from orbiter cargo bay and assembly in the ISS truss. It will be operational for up to 10 years in orbit with the capability to be launched and returned to Earth several times.

OBS

The Pallets, which will be attached at specific locations on the Truss, can be zenith-or nadir-facing, allowing them to carry instruments requiring solar or celestial viewing(zenith) or Earth viewing(nadir).

OBS

EXPRESS: Expedite the Processing of Experiments to the Space Station.

OBS

EXPRESS pallet; ExP: term and abbreviation officially approved by the International Space Station official approval Group (ISSOAG).

PHR

Individual, standard EXPRESS pallet.

PHR

EXPRESS pallet adapter payload envelope, adapter plate.

French

Domaine(s)
  • Stations orbitales
CONT

Une palette Express transporte des équipements extérieurs alors qu'une palette Spacelab (SLP) transporte le SPDM («Canada Hand») et des réservoirs (ATA et HP Gas).

OBS

palette EXPRESS; ExP : terme et abréviation uniformisés par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

Spanish

Save record 3

Record 4 2001-07-20

English

Subject field(s)
  • Orbital Stations
CONT

The fields of view for attached payloads are dependent on payload type and location, with full truss-site payloads having greater latitude in viewing than ExPA payloads. Viewing in the zenith direction for payloads on nadir-pointing truss sites is not generally possible and vice versa. Viewfields for ExPA payloads depend on the payload's position on the pallet and the relative height of adjacent payloads. Positions provide various combinations of viewing in the nadir, zenith, ram, wake, and Earth-limb directions.

OBS

full truss-site payload: term officially approved by the International Space Station official approval Group (ISSOAG).

French

Domaine(s)
  • Stations orbitales
OBS

charge utile maximale sur poutrelle : terme uniformisé par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

Spanish

Save record 4

Record 5 2001-07-20

English

Subject field(s)
  • Orbital Stations
CONT

The fields of view for attached payloads are dependent on payload type and location, with full truss-site payloads having greater latitude in viewing than ExPA payloads. Viewing in the zenith direction for payloads on nadir-pointing truss sites is not generally possible and vice versa. Viewfields for ExPA payloads depend on the payload's position on the pallet and the relative height of adjacent payloads. Positions provide various combinations of viewing in the nadir, zenith, ram, wake, and Earth-limb directions.

OBS

nadir-pointing truss site: term officially approved by the International Space Station official approval Group (ISSOAG).

French

Domaine(s)
  • Stations orbitales
OBS

section de poutre orientée vers le nadir : terme uniformisé par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

Spanish

Save record 5

Record 6 2001-06-04

English

Subject field(s)
  • Orbital Stations
CONT

There are two attach points on the nadir, or Earth-facing, side of the truss, and two on the opposite, or zenith side of the truss. Physically the attach points consist of a system of three guide vanes and a capture latch used to secure the payload, as well as an umbilical assembly to mate utilities and connections.

OBS

attach point: term officially approved by the International Space Station official approval Group (ISSOAG).

French

Domaine(s)
  • Stations orbitales
CONT

[...] ils transportent l'antenne de communication en bande S (SASA) de son point d'attache sur la structure ITS-Z1 jusqu'au sommet de l'ITS-P6, quelque trente mètres au-dessus de l'orbiteur.

OBS

point d'attache : terme uniformisé par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

Spanish

Save record 6

Copyright notice for the TERMIUM Plus® data bank

© Public Services and Procurement Canada, 2026
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau

Display options

Change the order of display of the official languages of Canada
Option to display the non-official languages (Spanish or Portuguese)
Display definitions, contexts, etc., on records

Features

GCtranslate (available on the Government of Canada network only)

Use this artificial intelligence prototype to translate Government of Canada content up to and including Protected B. Available to employees of selected departments and agencies only.

Writing tools

The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.

Glossaries and vocabularies

Access Translation Bureau glossaries and vocabularies.

Date Modified: