TERMIUM Plus®
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ONDES CONTRAROTATIVES [1 record]
Record 1 - internal organization data 2001-09-17
Record 1, English
Record 1, Subject field(s)
- Optics
- Lasers and Masers
- Flight Instruments and Equipment (Aeroindustry)
Record 1, Main entry term, English
- counter-rotating laser beam
1, record 1, English, counter%2Drotating%20laser%20beam
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- counter rotating laser beam 2, record 1, English, counter%20rotating%20laser%20beam
correct
- counterrotating laser beam 3, record 1, English, counterrotating%20laser%20beam
correct
- contra-rotating light beam 4, record 1, English, contra%2Drotating%20light%20beam
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
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. 5, record 1, English, - counter%2Drotating%20laser%20beam
Record number: 1, Textual support number: 2 CONT
When the RLG [ring laser gyro] is rotating, the path length around the loop is actually different depending if you measure it clockwise or counter-clockwise. This path length difference causes the counter-rotating laser beams to have a different frequency. The beat of these frequencies is detected to measure the angular rate. 6, record 1, English, - counter%2Drotating%20laser%20beam
Record 1, Key term(s)
- counter-rotating laser beams
- counter rotating laser beams
- counterrotating laser beams
- contra-rotating light beams
Record 1, French
Record 1, Domaine(s)
- Optique
- Masers et lasers
- Instruments et équipement de bord (Constructions aéronautiques)
Record 1, Main entry term, French
- faisceau de lumière contra-rotatif
1, record 1, French, faisceau%20de%20lumi%C3%A8re%20contra%2Drotatif
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- rayon contrarotatif 2, record 1, French, rayon%20contrarotatif
correct, masculine noun
- onde contrarotative 2, record 1, French, onde%20contrarotative
correct, feminine noun
- faisceau lumineux contrarotatif 3, record 1, French, faisceau%20lumineux%20contrarotatif
correct, masculine noun
- onde contra-propagative 4, record 1, French, onde%20contra%2Dpropagative
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
[...] signalons l'entrée en service en 1994, sur avion de transport civil, du gyromètre à fibre optique [...] Son principe de fonctionnement est voisin du gyrolaser à cavité. [...] Ce gyromètre sans gaz, ni plasma, ni pièce mécanique mobile est particulièrement robuste. [...] Un autre type de gyromètre optique est à l'étude, dit à cavité résonnante passive et constitué d'un guide d'onde en forme d'anneau. Il est toujours basé sur le principe de deux faisceaux de lumière contra-rotatifs. 1, record 1, French, - faisceau%20de%20lumi%C3%A8re%20contra%2Drotatif
Record number: 1, Textual support number: 2 CONT
Le principe de fonctionnement des GFO [gyromètre à fibre optique] correspond non plus à une cavité optique résonante mais à une bobine de fibre optique qui peut atteindre plusieurs kilomètres. La différence de chemin optique rencontrée par les deux ondes contra-propagatives, en présence d'une rotation suivant l'axe de la bobine, est mise en évidence par une différence de phase au point de combinaison. Il ne s'agit donc plus d'une différence de fréquence des deux ondes comme dans le cas du gyrolaser, mais d'une différence de phase. 4, record 1, French, - faisceau%20de%20lumi%C3%A8re%20contra%2Drotatif
Record 1, Key term(s)
- rayons contrarotatifs
- faisceaux de lumière contra-rotatifs
- ondes contrarotatives
- faisceaux lumineux contrarotatifs
- ondes contra-propagatives
- onde contrapropagative
- ondes contrapropagatives
Record 1, Spanish
Record 1, Textual support, Spanish
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