TERMIUM Plus®
From: Translation Bureau
On social media
Consult the Government of Canada’s terminology data bank.
GYRO WHEEL [19 records]
Record 1 - internal organization data 2015-04-14
Record 1, English
Record 1, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Air Navigation Aids
- River and Sea Navigation
Record 1, Main entry term, English
- gyroscope
1, record 1, English, gyroscope
correct, standardized
Record 1, Abbreviations, English
Record 1, Synonyms, English
- gyro 2, record 1, English, gyro
correct, standardized
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A spinning rotor, usually in a gimbal system, provided with one or more additional degrees of freedom. 3, record 1, English, - gyroscope
Record number: 1, Textual support number: 1 OBS
The gyroscope is used to sense directional changes and to develop signals for operating automatic pilots and inertial guidance systems. 4, record 1, English, - gyroscope
Record number: 1, Textual support number: 2 OBS
gyroscope; gyro: terms standardized by the British Standards Institution. 5, record 1, English, - gyroscope
Record number: 1, Textual support number: 1 PHR
Gyro wheel. 6, record 1, English, - gyroscope
Record 1, French
Record 1, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Aides à la navigation aérienne
- Navigation fluviale et maritime
Record 1, Main entry term, French
- gyroscope
1, record 1, French, gyroscope
correct, masculine noun, officially approved
Record 1, Abbreviations, French
Record 1, Synonyms, French
- gyro 2, record 1, French, gyro
correct, masculine noun, officially approved
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Un gyroscope est un appareil capable de fournir une direction physique de référence et, corrélativement, une information de rotation angulaire, sous forme d'un écart angulaire, ou d'un angle total [...] compris entre 0 et 360 degrés, vis-à-vis d'un référentiel absolu ou «inertiel». 3, record 1, French, - gyroscope
Record number: 1, Textual support number: 1 OBS
gyroscope; gyro : termes uniformisés par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Opérations aériennes. 4, record 1, French, - gyroscope
Record number: 1, Textual support number: 1 PHR
Volant de gyroscope. 5, record 1, French, - gyroscope
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Instrumentos y equipo de vuelo (Industria aeronáutica)
- Ayuda para la navegación aérea
- Navegación fluvial y marítima
Record 1, Main entry term, Spanish
- giróscopo
1, record 1, Spanish, gir%C3%B3scopo
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
- giroscopio 2, record 1, Spanish, giroscopio
correct, masculine noun
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Sistema mecánico dotado de una estructura toroidal pesada, en el que la mayor parte de la masa se concentra en la periferia, y a la que se le imprime un fuerte régimen de rotación (normalmente mediante un motor eléctrico), tanto mayor cuanto menor sea su radio. 1, record 1, Spanish, - gir%C3%B3scopo
Record 2 - internal organization data 2007-03-11
Record 2, English
Record 2, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Navigation Instruments
- Aircraft Piloting and Navigation
Record 2, Main entry term, English
- compass rose card
1, record 2, English, compass%20rose%20card
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- compass card 2, record 2, English, compass%20card
correct
- compass rose 3, record 2, English, compass%20rose
correct
- azimuth card 4, record 2, English, azimuth%20card
correct
- compass dial 5, record 2, English, compass%20dial
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
The part of a compass on which the direction graduations are placed, it is usually in the form of a thin disk or annulus graduated in degrees, clockwise from 0° at the reference direction to 360°, and sometimes also in compass points. 6, record 2, English, - compass%20rose%20card
Record number: 2, Textual support number: 1 CONT
The heading indicator(also known as the directional gyro) is an instrument designed to indicate the heading of the airplane... The gyro wheel in the heading indicator is mounted vertically and spins about its horizontal axis... The spinning gyro wheel is mounted in an inner gimbal ring that is free to turn about the horizontal axis. The inner ring is, in turn, mounted inside an outer gimbal ring. The compass rose card on the face of the instrument is attached by a series of gears to the outer gimbal ring. As the airplane turns, the compass card rotates indicating a turn to the left or right. 1, record 2, English, - compass%20rose%20card
Record number: 2, Textual support number: 2 CONT
The dial on a compass is called a card. The compass card has 360 points, called degrees. The dial will help you to find East, West, South and all the points in between. The numbers on the dial show the number of degrees from North. 5, record 2, English, - compass%20rose%20card
Record 2, French
Record 2, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Instruments de navigation
- Pilotage et navigation aérienne
Record 2, Main entry term, French
- rose graduée du compas
1, record 2, French, rose%20gradu%C3%A9e%20du%20compas
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- rose compas 2, record 2, French, rose%20compas
correct, feminine noun, officially approved
- rose du compas 3, record 2, French, rose%20du%20compas
correct, feminine noun
- rose des caps 1, record 2, French, rose%20des%20caps
feminine noun
- limbe 4, record 2, French, limbe
see observation, masculine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Couronne circulaire en métal ou en verre sur laquelle est portée la graduation angulaire d'un instrument de mesure. 5, record 2, French, - rose%20gradu%C3%A9e%20du%20compas
Record number: 2, Textual support number: 1 CONT
La rose du compas doit être graduée dans le sens des aiguilles d'une montre de 0° à 360° à intervalles égaux ne dépassant pas 1°. Elle doit porter une graduation chiffrée tous les degrés au moins. Les répéteurs numériques sont acceptables à condition qu'ils soient facilement lisibles et qu'ils contiennent des échelles équivalentes. 6, record 2, French, - rose%20gradu%C3%A9e%20du%20compas
Record number: 2, Textual support number: 2 CONT
Le conservateur de cap (aussi appelé gyroscope directionnel) est un instrument qui indique la cap de l'avion [...] Le rotor du conservateur de cap est monté verticalement et tourne autour d'un axe horizontal [...] Ce rotor est fixé dans un cardan intérieur, lequel tourne librement autour de l'axe horizontal. Ce cardan est monté à l'intérieur d'un autre cardan. Le limbe (rose graduée du compas) visible sur la face de l'instrument, est attaché au cardan extérieur par un système d'engrenages. Lorsque l'avion effectue un virage, le limbe tourne, indiquant un virage à gauche ou à droite. 1, record 2, French, - rose%20gradu%C3%A9e%20du%20compas
Record number: 2, Textual support number: 1 OBS
rose compas : terme uniformisé par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Opérations aériennes. 7, record 2, French, - rose%20gradu%C3%A9e%20du%20compas
Record number: 2, Textual support number: 2 OBS
limbe : Pris hors contexte précis, ce terme est un générique par rapport aux termes «rose graduée du compas» ou «rose des caps». 8, record 2, French, - rose%20gradu%C3%A9e%20du%20compas
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2002-10-22
Record 3, English
Record 3, Subject field(s)
- Measuring Instruments (Engineering)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 3, Main entry term, English
- free gyro
1, record 3, English, free%20gyro
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- free gyroscope 2, record 3, English, free%20gyroscope
correct
- unrestrained gyroscope 3, record 3, English, unrestrained%20gyroscope
correct
- free mounted gyroscope 4, record 3, English, free%20mounted%20gyroscope
correct
- freely mounted gyroscope 5, record 3, English, freely%20mounted%20gyroscope
correct
- Cardan-mounted gyroscope 6, record 3, English, Cardan%2Dmounted%20gyroscope
correct
- neutral gyro 7, record 3, English, neutral%20gyro
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
A gyroscope that uses the property of gyroscopic rigidity to sense changes in altitude of a machine, such as an airplane; the spinning wheel or rotor is isolated from the airplane by gimbals; when the plane changes from level flight, the gyro remains vertical and gives the pilot an artificial horizon reference. 8, record 3, English, - free%20gyro
Record number: 3, Textual support number: 1 CONT
A free (unrestrained and not subject to any outside force) gyroscope is fixed to space... This means the centerline of the axle points to two points of absolute rest, 180 degrees apart, to the Universe or in the up and down direction. 3, record 3, English, - free%20gyro
Record number: 3, Textual support number: 1 OBS
... in order to be free of gravity, gyroscopes can be placed in a Cardan mount, which permits the gyroscopes to remain free of forces exerted on the systems of which they are a part. In the Cardan mount the shaft of a gyroscope wheel is mounted in a gimbal ring, which in turn is mounted in a larger gimbal ring along a diameter that is at right angles to the axis of the wheel. 6, record 3, English, - free%20gyro
Record 3, Key term(s)
- unrestrained gyro
- free-mounted gyro
- free-mounted gyroscope
- neutral gyroscope
- Cardan-mounted gyro
- freely mounted gyro
Record 3, French
Record 3, Domaine(s)
- Instruments de mesure (Ingénierie)
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 3, Main entry term, French
- gyroscope libre
1, record 3, French, gyroscope%20libre
correct, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
- gyroscope monté à la Cardan 2, record 3, French, gyroscope%20mont%C3%A9%20%C3%A0%20la%20Cardan
correct, masculine noun
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Gyroscope dont la suspension à la cardan est exempte de toute liaison. 3, record 3, French, - gyroscope%20libre
Record number: 3, Textual support number: 1 CONT
Le conservateur de cap, également appelé directionnel, est un gyroscope libre dont l'axe est orienté horizontalement selon la direction qui lui a été assignée lors de sa mise en rotation. 4, record 3, French, - gyroscope%20libre
Record number: 3, Textual support number: 1 OBS
Cardan : Système de suspension dans lequel le corps suspendu conserve une position invariable malgré les oscillations de son support. 5, record 3, French, - gyroscope%20libre
Record number: 3, Textual support number: 2 OBS
Cardan : Nom francisé du savant italien Cardano, 1501-1576. 5, record 3, French, - gyroscope%20libre
Record 3, Key term(s)
- gyro libre
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2002-07-16
Record 4, English
Record 4, Subject field(s)
- General Mechanics (Physics)
- Flight Instruments and Equipment (Aeroindustry)
- Navigation Instruments
Record 4, Main entry term, English
- commanded precession rate
1, record 4, English, commanded%20precession%20rate
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 CONT
Controlled pendulum. The gyro spinning wheel is running at constant speed. The precession drive, which lies in a plane symmetric with respect to the gimbal is controlled to create a precession rate of the spinning wheel. Measurement of the rotation angle around the horizontal axis perpendicular to the symmetry plane of the gimbal is used to perform the precession control. This control aims to keep the center of gravity of the gimbal assembly over the rotation axis. The commanded precession rate is such that the gyroscopic torque counterbalances the gravity torque and the disturbing torques... 1, record 4, English, - commanded%20precession%20rate
Record 4, French
Record 4, Domaine(s)
- Mécanique générale (Physique)
- Instruments et équipement de bord (Constructions aéronautiques)
- Instruments de navigation
Record 4, Main entry term, French
- vitesse de précession commandée
1, record 4, French, vitesse%20de%20pr%C3%A9cession%20command%C3%A9e
correct, feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 CONT
Pendule asservi. La toupie gyroscopique est entraînée à vitesse constante. Le moteur de précession qui est dans le plan de symétrie du berceau est commandé pour produire une vitesse de basculement de la toupie. La mesure de l'angle de rotation autour de l'axe horizontal perpendiculaire au plan de symétrie du berceau est utilisée pour réaliser la commande du moteur de précession. Cette commande a pour but de maintenir le centre de gravité de l'ensemble à la verticale de l'axe de rotation horizontal. La vitesse de précession commandée est telle que le couple gyroscopique produit contre-balance le couple de gravité et les couples perturbateurs [...] 1, record 4, French, - vitesse%20de%20pr%C3%A9cession%20command%C3%A9e
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2002-04-17
Record 5, English
Record 5, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Aircraft Piloting and Navigation
- Navigation Instruments
Record 5, Main entry term, English
- controlled pendulum
1, record 5, English, controlled%20pendulum
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 CONT
Controlled pendulum. The gyro spinning wheel is running at constant speed. The precession drive, which lies in a plane symmetric with respect to the gimbal is controlled to create a precession rate of the spinning wheel. Measurement of the rotation angle around the horizontal axis perpendicular to the symmetry plane of the gimbal is used to perform the precession control. This control aims to keep the center of gravity of the gimbal assembly over the rotation axis. The commanded precession rate is such that the gyroscopic torque counterbalances the gravity torque and the disturbing torques... 1, record 5, English, - controlled%20pendulum
Record 5, French
Record 5, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Pilotage et navigation aérienne
- Instruments de navigation
Record 5, Main entry term, French
- pendule asservi
1, record 5, French, pendule%20asservi
correct, masculine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 CONT
Pendule asservi. La toupie gyroscopique est entraînée à vitesse constante. Le moteur de précession qui est dans le plan de symétrie du berceau est commandé pour produire une vitesse de basculement de la toupie. La mesure de l'angle de rotation autour de l'axe horizontal perpendiculaire au plan de symétrie du berceau est utilisée pour réaliser la commande du moteur de précession. Cette commande a pour but de maintenir le centre de gravité de l'ensemble à la verticale de l'axe de rotation horizontal. La vitesse de précession commandée est telle que le couple gyroscopique produit contre-balance le couple de gravité et les couples perturbateurs [...] 1, record 5, French, - pendule%20asservi
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 2001-09-10
Record 6, English
Record 6, Subject field(s)
- General Mechanics (Physics)
- Flight Instruments and Equipment (Aeroindustry)
- Navigation Instruments
Record 6, Main entry term, English
- disturbing torque
1, record 6, English, disturbing%20torque
correct
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 CONT
Controlled pendulum. The gyro spinning wheel is running at constant speed. The precession drive, which lies in a plane symmetric with respect to the gimbal is controlled to create a precession rate of the spinning wheel. Measurement of the rotation angle around the horizontal axis perpendicular to the symmetry plane of the gimbal is used to perform the precession control. This control aims to keep the center of gravity of the gimbal assembly over the rotation axis. The commanded precession rate is such that the gyroscopic torque counterbalances the gravity torque and the disturbing torques... 2, record 6, English, - disturbing%20torque
Record 6, French
Record 6, Domaine(s)
- Mécanique générale (Physique)
- Instruments et équipement de bord (Constructions aéronautiques)
- Instruments de navigation
Record 6, Main entry term, French
- couple perturbateur
1, record 6, French, couple%20perturbateur
correct, masculine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 CONT
Pendule asservi. La toupie gyroscopique est entraînée à vitesse constante. Le moteur de précession qui est dans le plan de symétrie du berceau est commandé pour produire une vitesse de basculement de la toupie. La mesure de l'angle de rotation autour de l'axe horizontal perpendiculaire au plan de symétrie du berceau est utilisée pour réaliser la commande du moteur de précession. Cette commande a pour but de maintenir le centre de gravité de l'ensemble à la verticale de l'axe de rotation horizontal. La vitesse de précession commandée est telle que le couple gyroscopique produit contre-balance le couple de gravité et les couples perturbateurs [...] 2, record 6, French, - couple%20perturbateur
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 2001-09-10
Record 7, English
Record 7, Subject field(s)
- General Mechanics (Physics)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 7, Main entry term, English
- gravity torque
1, record 7, English, gravity%20torque
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
- gravity-induced torque 2, record 7, English, gravity%2Dinduced%20torque
correct
Record 7, Textual support, English
Record number: 7, Textual support number: 1 CONT
Gyroscopic pendulum. Free pendulum. The gyro spinning wheel is running at constant speed. The precession drive, which lies in a plane symmetric with respect to the gimbal is not controlled. When the gimbal becomes free, the gravity torque drives it around the horizontal axis, perpendicular to the symmetry plane, until it falls on the top. 1, record 7, English, - gravity%20torque
Record number: 7, Textual support number: 2 CONT
The motion induced in a gyroscope by an applied force follows a simple rule. When the spinning top, for example, is acted upon by a gravity-induced torque, the original rotational motion tries to align itself with the added rotational motion of the torque. The motion, or precession, of the gyroscope that results is perpendicular to the applied torque. In other words, the spin vector tries to align itself with the torque vector; ... 2, record 7, English, - gravity%20torque
Record 7, French
Record 7, Domaine(s)
- Mécanique générale (Physique)
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 7, Main entry term, French
- couple de gravité
1, record 7, French, couple%20de%20gravit%C3%A9
correct, masculine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 CONT
Pendule gyroscopique. Pendule libre. La toupie gyroscopique est entraînée à vitesse constante. Le moteur de précession qui est dans le plan de symétrie du berceau n'est pas commandé. Quand on lâche le berceau, le couple de gravité fait tourner le berceau autour de son axe horizontal perpendiculaire à son plan de symétrie jusqu'à tomber sur la butée. Cette vitesse de rotation induit un couple gyroscopique qui fait basculer la toupie autour de son axe de précession malgré la résistance du réducteur du moteur de précession. 1, record 7, French, - couple%20de%20gravit%C3%A9
Record 7, Spanish
Record 7, Textual support, Spanish
Record 8 - internal organization data 2001-09-10
Record 8, English
Record 8, Subject field(s)
- Gears and Friction Wheels
- Flight Instruments and Equipment (Aeroindustry)
Record 8, Main entry term, English
- gear of the precession drive
1, record 8, English, gear%20of%20the%20precession%20drive
correct
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 CONT
Gyroscopic pendulum. Free pendulum. The gyro spinning wheel is running at constant speed. The precession drive, which lies in a plane symmetric with respect to the gimbal is not controlled. When the gimbal becomes free, the gravity torque drives it around the horizontal axis, perpendicular to the symmetry plane, until it falls on the top. This rate of rotation of the gimbal creates a gyroscopic torque that makes the spinner rotate around the precession axis in spite of the friction due to the gear of the precession drive. 1, record 8, English, - gear%20of%20the%20precession%20drive
Record 8, Key term(s)
- precession drive gear
Record 8, French
Record 8, Domaine(s)
- Engrenages et roues de friction
- Instruments et équipement de bord (Constructions aéronautiques)
Record 8, Main entry term, French
- réducteur du moteur de précession
1, record 8, French, r%C3%A9ducteur%20du%20moteur%20de%20pr%C3%A9cession
correct, masculine noun
Record 8, Abbreviations, French
Record 8, Synonyms, French
Record 8, Textual support, French
Record number: 8, Textual support number: 1 CONT
Pendule gyroscopique. Pendule libre. La toupie gyroscopique est entraînée à vitesse constante. Le moteur de précession qui est dans le plan de symétrie du berceau n'est pas commandé. Quand on lâche le berceau, le couple de gravité fait tourner le berceau autour de son axe horizontal perpendiculaire à son plan de symétrie jusqu'à tomber sur la butée. Cette vitesse de rotation induit un couple gyroscopique qui fait basculer la toupie autour de son axe de précession malgré la résistance du réducteur du moteur de précession. 1, record 8, French, - r%C3%A9ducteur%20du%20moteur%20de%20pr%C3%A9cession
Record 8, Spanish
Record 8, Textual support, Spanish
Record 9 - internal organization data 2001-09-10
Record 9, English
Record 9, Subject field(s)
- General Mechanics (Physics)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 9, Main entry term, English
- precession drive
1, record 9, English, precession%20drive
correct
Record 9, Abbreviations, English
Record 9, Synonyms, English
- precession motor 2, record 9, English, precession%20motor
correct
Record 9, Textual support, English
Record number: 9, Textual support number: 1 CONT
Gyroscopic pendulum. Free pendulum. The gyro spinning wheel is running at constant speed. The precession drive, which lies in a plane symmetric with respect to the gimbal is not controlled. When the gimbal becomes free, the gravity torque drives it around the horizontal axis, perpendicular to the symmetry plane, until it falls on the top. 1, record 9, English, - precession%20drive
Record 9, French
Record 9, Domaine(s)
- Mécanique générale (Physique)
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 9, Main entry term, French
- moteur de précession
1, record 9, French, moteur%20de%20pr%C3%A9cession
correct, masculine noun
Record 9, Abbreviations, French
Record 9, Synonyms, French
Record 9, Textual support, French
Record number: 9, Textual support number: 1 CONT
On distingue les gyrodynes 1-axe (une seule vitesse cardan commandée par toupie, en précession) dont le couple moteur est directement transmis au satellite par les bâtis et les gyrodynes 2-axes montés sur un double cardan avec vitesses de précession et nutation commandées. Dans ce cas, l'effet d'amplification de couple --le fait qu'un faible couple autour de l'axe de précession produise un fort couple autour de l'axe perpendiculaire-- est moins important car le moteur de précession autour d'un des axes doit surpasser les couples de précession produits par l'autre. Les études menées au DCSD [Département Commande des Systèmes et Dynamique du Vol] portent principalement sur les «grappes» : ensemble de gyrodynes 1-axe commandés simultanément. 2, record 9, French, - moteur%20de%20pr%C3%A9cession
Record 9, Spanish
Record 9, Textual support, Spanish
Record 10 - internal organization data 2001-09-10
Record 10, English
Record 10, Subject field(s)
- Physics
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 10, Main entry term, English
- free pendulum
1, record 10, English, free%20pendulum
correct
Record 10, Abbreviations, English
Record 10, Synonyms, English
Record 10, Textual support, English
Record number: 10, Textual support number: 1 CONT
Gyroscopic pendulum. Free pendulum. The gyro spinning wheel is running at constant speed. The precession drive, which lies in a plane symmetric with respect to the gimbal is not controlled. When the gimbal becomes free, the gravity torque drives it around the horizontal axis, perpendicular to the symmetry plane, until it falls on the top. 1, record 10, English, - free%20pendulum
Record 10, French
Record 10, Domaine(s)
- Physique
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 10, Main entry term, French
- pendule libre
1, record 10, French, pendule%20libre
correct, masculine noun
Record 10, Abbreviations, French
Record 10, Synonyms, French
Record 10, Textual support, French
Record number: 10, Textual support number: 1 CONT
Pendule gyroscopique. Pendule libre. La toupie gyroscopique est entraînée à vitesse constante. Le moteur de précession qui est dans le plan de symétrie du berceau n'est pas commandé. Quant on lâche le berceau, le couple de gravité fait tourner le berceau autour de son axe horizontal perpendiculaire à son plan de symétrie jusqu'à tomber sur la butée. Cette vitesse de rotation induit un couple gyroscopique qui fait basculer la toupie autour de son axe de précession malgré la résistance du réducteur du moteur de précession. 2, record 10, French, - pendule%20libre
Record 10, Spanish
Record 10, Textual support, Spanish
Record 11 - internal organization data 2001-09-10
Record 11, English
Record 11, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Aircraft Piloting and Navigation
- Navigation Instruments
Record 11, Main entry term, English
- stop
1, record 11, English, stop
correct, noun
Record 11, Abbreviations, English
Record 11, Synonyms, English
Record 11, Textual support, English
Record number: 11, Textual support number: 1 CONT
Gyroscopic pendulum. Free pendulum. The gyro spinning wheel is running at constant speed. The precession drive, which lies in a plane symmetric with respect to the gimbal is not controlled. When the gimbal becomes free, the gravity torque drives it around the horizontal axis, perpendicular to the symmetry plane, until it falls on the stop. 1, record 11, English, - stop
Record 11, French
Record 11, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Pilotage et navigation aérienne
- Instruments de navigation
Record 11, Main entry term, French
- butée
1, record 11, French, but%C3%A9e
correct, feminine noun
Record 11, Abbreviations, French
Record 11, Synonyms, French
Record 11, Textual support, French
Record number: 11, Textual support number: 1 CONT
Pendule gyroscopique. Pendule libre. Le toupie gyroscopique est entraînée à vitesse constante. Le moteur de précession qui est dans le plan de symétrie du berceau n'est pas commandé. Quand on lâche le berceau, le couple de gravité fait tourner le berceau autour de son axe horizontal perpendiculaire à son plan de symétrie jusqu'à tomber sur la butée. Cette vitesse de rotation induit un couple gyroscopique qui fait basculer la toupie autour de son axe de précession malgré la résistance du réducteur du moteur de précession. 1, record 11, French, - but%C3%A9e
Record 11, Spanish
Record 11, Textual support, Spanish
Record 12 - internal organization data 2001-09-06
Record 12, English
Record 12, Subject field(s)
- General Mechanics (Physics)
Record 12, Main entry term, English
- gyroscopic pendulum
1, record 12, English, gyroscopic%20pendulum
correct
Record 12, Abbreviations, English
Record 12, Synonyms, English
Record 12, Textual support, English
Record number: 12, Textual support number: 1 CONT
Gyroscopic pendulum. Free pendulum. The gyro spinning wheel is running at constant speed. The precession drive, which lies in a plane symmetric with respect to the gimbal is not controlled. When the gimbal becomes free, the gravity torque drives it around the horizontal axis, perpendicular to the symmetry plane, until it falls on the top. 1, record 12, English, - gyroscopic%20pendulum
Record 12, French
Record 12, Domaine(s)
- Mécanique générale (Physique)
Record 12, Main entry term, French
- pendule gyroscopique
1, record 12, French, pendule%20gyroscopique
correct, masculine noun
Record 12, Abbreviations, French
Record 12, Synonyms, French
Record 12, Textual support, French
Record number: 12, Textual support number: 1 CONT
Pendule gyroscopique. Pendule libre. La toupie gyroscopique est entraînée à vitesse constante. Le moteur de précession qui est dans le plan de symétrie du berceau n'est pas commandé. Quand on lâche le berceau, le couple de gravité fait tourner le berceau autour de son axe horizontal perpendiculaire à son plan de symétrie jusqu'à tomber sur la butée. Cette vitesse de rotation induit un couple gyroscopique qui fait basculer la toupie autour de son axe de précession malgré la résistance du réducteur du moteur de précession. 1, record 12, French, - pendule%20gyroscopique
Record 12, Spanish
Record 12, Textual support, Spanish
Record 13 - internal organization data 2001-08-07
Record 13, English
Record 13, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Aircraft Piloting and Navigation
- Navigation Instruments
Record 13, Main entry term, English
- universal gimbal ring system
1, record 13, English, universal%20gimbal%20ring%20system
correct
Record 13, Abbreviations, English
Record 13, Synonyms, English
Record 13, Textual support, English
Record number: 13, Textual support number: 1 CONT
In the attitude indicator, the gyro wheel is mounted horizontally and spins about its vertical axis. It is mounted in a universal gimbal ring system, free about both the pitching and rolling axes of the airplane and is therefore able to remain spinning in a horizontal plane parallel to the true horizon, regardless of the rolling or pitching movements of the airplane around it. 1, record 13, English, - universal%20gimbal%20ring%20system
Record 13, French
Record 13, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Pilotage et navigation aérienne
- Instruments de navigation
Record 13, Main entry term, French
- système de cardan universel
1, record 13, French, syst%C3%A8me%20de%20cardan%20universel
correct, masculine noun
Record 13, Abbreviations, French
Record 13, Synonyms, French
Record 13, Textual support, French
Record number: 13, Textual support number: 1 CONT
Le rotor de l'horizon artificiel est monté horizontalement et tourne autour de son axe vertical. Il est fixé à un système de cardan universel, libre autour des axes de tangage et de roulis. Il est donc capable de maintenir une rotation sur le plan horizontal, parallèle à l'horizon naturel, indépendamment des mouvements de roulis et de tangage exécutés par l'avion autour de lui. 1, record 13, French, - syst%C3%A8me%20de%20cardan%20universel
Record 13, Spanish
Record 13, Textual support, Spanish
Record 14 - internal organization data 2001-08-07
Record 14, English
Record 14, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Aircraft Piloting and Navigation
- Navigation Instruments
Record 14, Main entry term, English
- heading indicator gyro wheel
1, record 14, English, heading%20indicator%20gyro%20wheel
correct
Record 14, Abbreviations, English
Record 14, Synonyms, English
- directional gyro wheel 1, record 14, English, directional%20gyro%20wheel
correct
Record 14, Textual support, English
Record number: 14, Textual support number: 1 OBS
The heading indicator(also known as the directional gyro) is an instrument designed to indicate the heading of the airplane... The gyro wheel in the heading indicator is mounted vertically and spins about its horizontal axis... The spinning gyro wheel is mounted in an inner gimbal ring that is free to turn about the horizontal axis. 2, record 14, English, - heading%20indicator%20gyro%20wheel
Record 14, French
Record 14, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Pilotage et navigation aérienne
- Instruments de navigation
Record 14, Main entry term, French
- rotor du conservateur de cap
1, record 14, French, rotor%20du%20conservateur%20de%20cap
correct, masculine noun
Record 14, Abbreviations, French
Record 14, Synonyms, French
- rotor du gyroscope directionnel 2, record 14, French, rotor%20du%20gyroscope%20directionnel
correct, masculine noun
Record 14, Textual support, French
Record number: 14, Textual support number: 1 CONT
Le conservateur de cap (aussi appelé gyroscope directionnel) est un instrument qui indique la cap de l'avion [...] Le rotor du conservateur de cap est monté verticalement et tourne autour d'un axe horizontal [...] Ce rotor est fixé dans un cardan intérieur, lequel tourne librement autour de l'axe horizontal. 1, record 14, French, - rotor%20du%20conservateur%20de%20cap
Record number: 14, Textual support number: 1 OBS
Le conservateur de cap ou directionnel. [...] Le directionnel est [...] un gyroscope dont le rotor tourne à vitesse élevée [...] la propriété fondamentale d'un gyroscope est de garder une position fixe par rapport à l'espace. Si le pilote choisit de caler son conservateur de cap sur le nord magnétique, son directionnel lui fournira donc en permanence une indication stable de son cap magnétique. 3, record 14, French, - rotor%20du%20conservateur%20de%20cap
Record 14, Spanish
Record 14, Textual support, Spanish
Record 15 - internal organization data 2001-06-22
Record 15, English
Record 15, Subject field(s)
- General Mechanics (Physics)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 15, Main entry term, English
- precession re-adjustment
1, record 15, English, precession%20re%2Dadjustment
correct
Record 15, Abbreviations, English
Record 15, Synonyms, English
Record 15, Textual support, English
Record number: 15, Textual support number: 1 CONT
A significant advantage of the HI (heading indicator) over the magnetic compass is its steadiness in turbulence and various aircraft movements... the compass have several errors introduced during turns, acceleration and deceleration. The HI is unaffected by these maneuvers and by turbulence, and is a reliable instrument as long as the precession re-adjustment is made in timely fashion. 1, record 15, English, - precession%20re%2Dadjustment
Record number: 15, Textual support number: 1 OBS
Gyroscopic precession. The reaction of a gyro when a force is applied to the spinning wheel. When force is applied to a gyro, the device reacts as if the force had been applied at a point 90 degrees from the point of actual application, in the direction of rotation. Precession affects propellers, which act like gyros, and gyro instruments. Its principle effect is on the heading indicator, which tends to drift over time. 2, record 15, English, - precession%20re%2Dadjustment
Record 15, French
Record 15, Domaine(s)
- Mécanique générale (Physique)
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 15, Main entry term, French
- correction de l'erreur de précession
1, record 15, French, correction%20de%20l%27erreur%20de%20pr%C3%A9cession
feminine noun
Record 15, Abbreviations, French
Record 15, Synonyms, French
Record 15, Textual support, French
Record number: 15, Textual support number: 1 OBS
Erreur de précession. Les forces de friction présentes dans le système gyroscopique engendrent la précession. Cette précession occasionne un «glissement» ou une «dérive» d'environ 3 degrés dans la lecture de l'instrument et ce, à toutes les 15 minutes. Le gyroscope est aussi sujet à la précession apparente. L'inertie gyroscopique garde le gyroscope fixe dans l'espace de sorte qu'il ne bouge pas par rapport à l'espace. Cependant, la terre qui tourne en dessous du gyroscope donne à ce dernier un mouvement apparent par rapport à la terre. La rotation de la terre cause une dérive apparente, ou précession, qui varie avec la latitude [...] L'erreur de précession, à la fois mécanique et apparente, doit être corrigée à intervalles réguliers, c.-à-d. toutes les 15 minutes. 2, record 15, French, - correction%20de%20l%27erreur%20de%20pr%C3%A9cession
Record 15, Key term(s)
- correction des erreurs de précession
- correction de la précession
Record 15, Spanish
Record 15, Textual support, Spanish
Record 16 - internal organization data 2001-06-21
Record 16, English
Record 16, Subject field(s)
- General Mechanics (Physics)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 16, Main entry term, English
- steady precession
1, record 16, English, steady%20precession
correct
Record 16, Abbreviations, English
Record 16, Synonyms, English
- sustained precessional motion 2, record 16, English, sustained%20precessional%20motion
correct
- sustained precession 2, record 16, English, sustained%20precession
correct
Record 16, Textual support, English
Record number: 16, Textual support number: 1 CONT
... special gyro configurations can be devised by using slow spin velocity for which sizable circular motions are easily induced and observed. When they are superimposed on steady precession (due to unbalance) the result is a nodding up an down of the axle as it precesses about the vertical, which has led to the term nutation. 2, record 16, English, - steady%20precession
Record number: 16, Textual support number: 2 CONT
The gyro in the artificial horizon can be set in motion and kept in constant motion(steady precession) by using either electricity to power a spinning motor or by using air with a vacuum to suck air out of the casing and vary this air in and out to keep the wheel turning constantly. 3, record 16, English, - steady%20precession
Record number: 16, Textual support number: 1 OBS
The three elementary movements of a gyroscope: ...1. Rotation--the top is spinning rapidly about its vertical axis. 2. Precession--as it slows down, the top cants over and its axis follows a conical path. 3. Nutation--as the top spins more slowly still, the axis oscillates in a sinusoidal path. 4, record 16, English, - steady%20precession
Record number: 16, Textual support number: 1 PHR
To keep in steady precession. 3, record 16, English, - steady%20precession
Record 16, French
Record 16, Domaine(s)
- Mécanique générale (Physique)
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 16, Main entry term, French
- précession stable
1, record 16, French, pr%C3%A9cession%20stable
correct, feminine noun
Record 16, Abbreviations, French
Record 16, Synonyms, French
- mouvement de précession stable 2, record 16, French, mouvement%20de%20pr%C3%A9cession%20stable
correct, masculine noun
Record 16, Textual support, French
Record number: 16, Textual support number: 1 CONT
Mouvement de précession stable d'un gyroscope. 2, record 16, French, - pr%C3%A9cession%20stable
Record number: 16, Textual support number: 1 PHR
Être en état de précession stable. 1, record 16, French, - pr%C3%A9cession%20stable
Record 16, Spanish
Record 16, Textual support, Spanish
Record 17 - internal organization data 2001-06-21
Record 17, English
Record 17, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Aircraft Piloting and Navigation
- Navigation Instruments
Record 17, Main entry term, English
- artificial horizon reference
1, record 17, English, artificial%20horizon%20reference
correct
Record 17, Abbreviations, English
Record 17, Synonyms, English
Record 17, Textual support, English
Record number: 17, Textual support number: 1 CONT
In the free gyro of Fig. 2 the spinning wheel is isolated from the airplane by gimbals. When the airplane banks, the gyro remains vertical and furnishes the pilot with an artificial horizon reference. 1, record 17, English, - artificial%20horizon%20reference
Record 17, French
Record 17, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Pilotage et navigation aérienne
- Instruments de navigation
Record 17, Main entry term, French
- référence de l'horizon artificiel
1, record 17, French, r%C3%A9f%C3%A9rence%20de%20l%27horizon%20artificiel
correct, feminine noun
Record 17, Abbreviations, French
Record 17, Synonyms, French
Record 17, Textual support, French
Record number: 17, Textual support number: 1 OBS
En cas de perte des références extérieures, (rentrer dans un nuage, forte dégradation de la visibilité par brume ou pluie...), le pilote ne disposera plus que d'une vision réduite de son environnement par l'intermédiaire de l'horizon artificiel. Cet instrument sera - au même titre que l'horizon naturel en pilotage à vue - sa référence principale. 2, record 17, French, - r%C3%A9f%C3%A9rence%20de%20l%27horizon%20artificiel
Record number: 17, Textual support number: 2 OBS
Leçon en vol : 2° Vol aux instruments en virage. Perception. Au cours de phases de palier, montée, descente, montrer à l'élève la mise en virage en ayant l'horizon artificiel comme seule référence. 2, record 17, French, - r%C3%A9f%C3%A9rence%20de%20l%27horizon%20artificiel
Record 17, Spanish
Record 17, Textual support, Spanish
Record 18 - internal organization data 2001-06-21
Record 18, English
Record 18, Subject field(s)
- General Mechanics (Physics)
- Astrophysics and Cosmography
- Chemistry
- Aircraft Piloting and Navigation
Record 18, Main entry term, English
- precess
1, record 18, English, precess
correct, verb
Record 18, Abbreviations, English
Record 18, Synonyms, English
Record 18, Textual support, English
Record number: 18, Textual support number: 1 CONT
If the gyroscope were a perfect instrument, it would be possible to determine the position of a satellite or a space vehicle with respect to its own fixed axes. But a gyroscope precesses... A very good gyroscope only precesses a few thousandths of a degree of arc in an hour, but at the end of a week the error is about one degree and it is twenty-five degrees at the end of six months. 2, record 18, English, - precess
Record number: 18, Textual support number: 2 CONT
The HI [heading indicator] gyroscope may precess in small amounts over time. Therefore, the HI should be checked against the compass in 15 minute intervals. 3, record 18, English, - precess
Record number: 18, Textual support number: 1 OBS
Gyroscopic precession. The reaction of a gyro when a force is applied to the spinning wheel. When force is applied to a gyro, the device reacts as if the force had been applied at a point 90 degrees from the point of actual application, in the direction of rotation. Precession affects propellers, which act like gyros, and gyro instruments. Its principle effect is on the heading indicator, which tends to drift over time. 4, record 18, English, - precess
Record number: 18, Textual support number: 2 OBS
precession: A comparatively slow gyration of the rotation axis of a spinning body about another line intersecting it so as to describe a cone. 5, record 18, English, - precess
Record 18, French
Record 18, Domaine(s)
- Mécanique générale (Physique)
- Astrophysique et cosmographie
- Chimie
- Pilotage et navigation aérienne
Record 18, Main entry term, French
- précessionner
1, record 18, French, pr%C3%A9cessionner
correct, see observation
Record 18, Abbreviations, French
Record 18, Synonyms, French
- précesser 2, record 18, French, pr%C3%A9cesser
see observation
Record 18, Textual support, French
Record number: 18, Textual support number: 1 CONT
Comment pointer les gyros ?: [...] il suffit de commander les couples adéquats pour faire précessionner S2 en [phi] et [psi], jusqu'au bon alignement sur l'étoile choisie. 3, record 18, French, - pr%C3%A9cessionner
Record number: 18, Textual support number: 2 CONT
[...] une roue de vélo soutenue à une extrémité de son axe précessionne à l'horizontale. 4, record 18, French, - pr%C3%A9cessionner
Record number: 18, Textual support number: 3 CONT
Le proton va donc précesser en décrivant un cône parallèle ou antiparallèle selon son niveau d'énergie. 5, record 18, French, - pr%C3%A9cessionner
Record number: 18, Textual support number: 4 CONT
Dans un virage dérapé, le gyroscope «précesse» du côté du virage. Une fois l'avion revenu au vol rectiligne en palier, l'instrument indique un virage dans la direction du dérapage. Dans un virage normal, le gyroscope «précesse» du côté du virage. Le mécanisme de redressement du gyroscope corrige rapidement l'erreur de précession. 6, record 18, French, - pr%C3%A9cessionner
Record number: 18, Textual support number: 5 CONT
[...] on peut montrer en mécanique qu'un gyroscope soumis à un moment de force (par exemple, une toupie inclinée reposant sur sa pointe et soumise à son poids) précesse, c'est-à-dire que son axe de rotation décrit un cône en une période beaucoup plus longue que celle de sa rotation propre. 7, record 18, French, - pr%C3%A9cessionner
Record number: 18, Textual support number: 1 OBS
précession : Mécanique physique. Mouvement conique décrit, autour d'une position moyenne, par l'axe de rotation propre d'un corps animé d'un mouvement gyroscopique. 8, record 18, French, - pr%C3%A9cessionner
Record number: 18, Textual support number: 2 OBS
précesser; précessionner : À ce jour (2000), les deux termes ne sont pas répertoriés dans les dictionnaires courants; cependant, les deux formes sont largement attestées dans les textes les plus pointus sur Internet, avec un léger avantage pour «précesser». L'usage ne semble pas avoir tranché en faveur de l'un ou de l'autre. On pourrait penser cependant que la forme «précessionner» est plus conforme aux principes de création par dérivation en français. 9, record 18, French, - pr%C3%A9cessionner
Record 18, Spanish
Record 18, Textual support, Spanish
Record 19 - internal organization data 2001-06-21
Record 19, English
Record 19, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Aircraft Piloting and Navigation
- Navigation Instruments
Record 19, Main entry term, English
- single gimbal ring
1, record 19, English, single%20gimbal%20ring
correct
Record 19, Abbreviations, English
Record 19, Synonyms, English
Record 19, Textual support, English
Record number: 19, Textual support number: 1 CONT
One simple form of gyrocompass consists of a single gimbal ring attached to a support rod that is an extension of a diameter of the ring. The axis of the spinning wheel is mounted inside the ring along a diameter that is at right angles to the one represented by the support rod. 2, record 19, English, - single%20gimbal%20ring
Record number: 19, Textual support number: 2 CONT
rate gyroscope : A gyro wheel mounted in a single gimbal ring in such a manner that rotation about an axis perpendicular to both the gimbal axis and gyro axis produces a precessional torque proportional to the rotation rate. 3, record 19, English, - single%20gimbal%20ring
Record number: 19, Textual support number: 1 OBS
See record "gimbal ring / anneau de cardan." 4, record 19, English, - single%20gimbal%20ring
Record 19, Key term(s)
- single-gimbal ring
Record 19, French
Record 19, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Pilotage et navigation aérienne
- Instruments de navigation
Record 19, Main entry term, French
- anneau de cardan simple
1, record 19, French, anneau%20de%20cardan%20simple
masculine noun
Record 19, Abbreviations, French
Record 19, Synonyms, French
Record 19, Textual support, French
Record number: 19, Textual support number: 1 OBS
Voir la fiche «anneau de cardan / gimbal ring». 1, record 19, French, - anneau%20de%20cardan%20simple
Record 19, Spanish
Record 19, Textual support, Spanish
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
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:


