TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

gyro body [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2001-06-21

English

Subject field(s)
  • Lasers and Masers
  • Aircraft Piloting and Navigation
  • Navigation Instruments
  • Flight Instruments and Equipment (Aeroindustry)
CONT

Ring laser gyro... The mechanical structure integrity of the gyro is based on a 1.2 X1.2 meter block of zerodur. The zerodur is a glass ceramic material with a thickness of 180 mm weighing approximately 600 kg. The block has four 1-meter longitudinal bores provided for the laser beam paths. Folding mirrors are mounted at each of the four corners of the block. This forms a closed square resonator in which the laser beams can travel in both directions. The block was produced by Zeiss Glaswerke of Mainz, Germany. At Zeiss the machining process included cutting the gyro body edges in preparation for the mounting of the folding mirrors. The surfaces for the mirror mounting are optically polished allowing the folding mirrors to be attached directly to the zerodur by optical contact rather than by bonding.

CONT

[Ring laser gyro] The gyro body is constructed from a solid block of quartz (Zerodur) to eliminate any mechanical distortion of the block by linear or rotational acceleration and prevent outgassing.

Key term(s)
  • gyroscope body
  • gyroscope's body

French

Domaine(s)
  • Masers et lasers
  • Pilotage et navigation aérienne
  • Instruments de navigation
  • Instruments et équipement de bord (Constructions aéronautiques)
CONT

[...] le gyrolaser est un contraignant : parmi les principales contraintes, notons que : la cavité optique doit être de dimension bien ajustée, pour obtenir en sortie une puissance lumineuse suffisante : cela nécessite un asservissement en longueur, l'un des miroirs étant mobile, de position ajustable par piézoélectricité, pour que cet asservissement soit efficace, le socle doit être réalisé en Zérodur, une vitrocéramique de coefficient de dilatation thermique quasiment nul [...]

CONT

Pour l'utilisation sur les centrales inertielles, il s'est révélé nécessaire de développer des gyroscopes présentant une dérive pratiquement négligeable. Or la cause principale de cette dérive réside dans les frottements qui s'exercent sur le corps du gyroscope, dont la vitesse de rotation dépasse 20 000 tr/min.

Key term(s)
  • socle du gyroscope

Spanish

Save record 1

Copyright notice for the TERMIUM Plus® data bank

© Public Services and Procurement Canada, 2024
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

Language Portal of Canada

Access a collection of Canadian resources on all aspects of English and French, including quizzes.

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: