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CW PATH [1 record]

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Record 1 2001-08-24

English

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

Taking the sum of the phases gives the result [formula xxx] which is the difference of the clockwise and counterclockwise optical paths that form the gyro measurement.

OBS

In its simplest form, the ring laser gyro (RLG) consists of a triangular block of glass drilled out for 3 helium-neon laser bores with mirrors at the 120 degree points - the corners. Counter-rotating laser beams - one clockwise (CW) and the other counter-clockwise (CCW) coexist in this resonator. At some point, a photosensor monitors the beams where they intersect.

OBS

See record "optical path".

Key term(s)
  • clockwise path
  • cw path

French

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

La précision des gyromètres à fibre optique est souvent caractérisée par quatre paramètres : le domaine de mesure; le défaut de facteur d'échelle, dû aux manques de stabilité; le biais, erreur absolue en vitesse angulaire, dû au manque de réciprocité entre les trajets optiques horaires et anti-horaires; l'erreur aléatoire [...]

OBS

Voir la fiche «trajet optique».

Key term(s)
  • circuit optique horaire
  • chemin optique horaire

Spanish

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