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FREE GYROSCOPE [21 records]
Record 1 - internal organization data 2017-11-16
Record 1, English
Record 1, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Aircraft Piloting and Navigation
- Navigation Instruments
Record 1, Main entry term, English
- directional gyroscope
1, record 1, English, directional%20gyroscope
correct, officially approved
Record 1, Abbreviations, English
Record 1, Synonyms, English
- directional gyro 2, record 1, English, directional%20gyro
correct
- DG 3, record 1, English, DG
correct
- DG 3, record 1, English, DG
- heading indicator 4, record 1, English, heading%20indicator
correct
- HI 5, record 1, English, HI
correct
- HI 5, record 1, English, HI
- directional 6, record 1, English, directional
correct, noun
- direction indicator 7, record 1, English, direction%20indicator
correct
- gyro direction indicator 8, record 1, English, gyro%20direction%20indicator
- directional gyro indicator 9, record 1, English, directional%20gyro%20indicator
- self-levelling free gyroscope corrected for drift 10, record 1, English, self%2Dlevelling%20free%20gyroscope%20corrected%20for%20drift
less frequent
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
An instrument that senses yaw movement about the vertical axis.It indicates a change in direction relative to the magnetic north pole. 11, record 1, English, - directional%20gyroscope
Record number: 1, Textual support number: 2 DEF
A gyroscope instrument for indicating direction, containing a free gyroscope which holds its position in azimuth and thus indicates angular deviation from a pre-set heading. 12, record 1, English, - directional%20gyroscope
Record number: 1, Textual support number: 1 CONT
The heading indicator (HI) uses the principle of rigidity in space for it’s operation. The gyro is mounted such that it registers changes around the vertical axis only; i.e. direction changes. The compass card attached to the gyro appears to the pilot as though it is turning. In reality, it and the attached gyro are remaining rigid in space, while the aircraft and case turn about the gyro. The HI is not automatically synchronized with the magnetic compass. It must be set to the compass heading while level on the airport surface prior to take-off. 13, record 1, English, - directional%20gyroscope
Record number: 1, Textual support number: 2 CONT
The directional gyroscope is used in aircraft and is sometimes called a self-levelling free gyroscope corrected for drift. 10, record 1, English, - directional%20gyroscope
Record number: 1, Textual support number: 1 OBS
directional gyroscope: term officially approved by the International Civil Aviation Organization (ICAO). 14, record 1, English, - directional%20gyroscope
Record 1, Key term(s)
- directional indicator
Record 1, French
Record 1, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Pilotage et navigation aérienne
- Instruments de navigation
Record 1, Main entry term, French
- conservateur de cap
1, record 1, French, conservateur%20de%20cap
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- gyroscope directionnel 2, record 1, French, gyroscope%20directionnel
correct, masculine noun, officially approved
- DG 3, record 1, French, DG
correct, masculine noun, officially approved
- DG 3, record 1, French, DG
- gyro directionnel 4, record 1, French, gyro%20directionnel
correct, masculine noun, officially approved
- directionnel 5, record 1, French, directionnel
correct, masculine noun
- gyroscope de direction 6, record 1, French, gyroscope%20de%20direction
masculine noun
- gyroscope directionnel garde-cap 7, record 1, French, gyroscope%20directionnel%20garde%2Dcap
masculine noun
- garde-cap 7, record 1, French, garde%2Dcap
masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Instrument gyroscopique qui sert à indiquer la direction et qui contient un gyroscope qui garde sa position en azimut, et par là indique toute déviation d'angle de la course prévue. 8, record 1, French, - conservateur%20de%20cap
Record number: 1, Textual support number: 2 DEF
Instrument gyroscopique qui est utilisé comme un compas, mais plus précis et plus stable même pendant la montée, la descente ou dans les virages. 9, record 1, French, - conservateur%20de%20cap
Record number: 1, 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. Cette orientation sera prise pour référence horizontale. En choisissant le nord magnétique comme référence, cet appareil indiquera le cap magnétique de l'avion. Il faudra le «caler» avant chaque vol lorsque l'avion est aligné sur la piste (piste dont on connaît l'orientation). 10, record 1, French, - conservateur%20de%20cap
Record number: 1, Textual support number: 2 CONT
Le conservateur de cap, ou gyroscope directionnel, est l'un des trois instruments à gyroscope. Aligné avec le compas, il donne une indication précise et stable concernant le cap magnétique de l'appareil. Le conservateur de cap constitue une aide importante car le compas est sujet à des erreurs causées par l'accélération, la décélération et la courbure du champ magnétique terrestre, particulièrement sous les hautes latitudes. Il arrive fréquemment que le compas oscille; il est particulièrement difficile à lire dans les turbulences ou pendant les manœuvres. Fonctionnement. Le gyroscope du conservateur de cap pivote dans un plan vertical. Une carte comportant des caps maintient son orientation lorsque l'avion tourne. Le mouvement apparent de la carte donne au pilote une indication précise et instantanée du cap de l'avion et de la direction dans laquelle il tourne. La carte est marquée de 5 degrés en 5 degrés, avec une indication chiffrée tous les 30 degrés et les points cardinaux repérés par N, S, E, O. 11, record 1, French, - conservateur%20de%20cap
Record number: 1, Textual support number: 3 CONT
Centrale de cap et de verticale pour avion. Une centrale est constituée d'un gyro-indicateur de verticale et d'un gyroscope directionnel garde-cap. 7, record 1, French, - conservateur%20de%20cap
Record number: 1, Textual support number: 1 OBS
gyroscope directionnel; gyro directionnel; DG : termes et abréviation uniformisés par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Opérations aériennes. 12, record 1, French, - conservateur%20de%20cap
Record number: 1, Textual support number: 2 OBS
gyroscope directionnel : terme uniformisé par l'Organisation de l'aviation civile internationale (OACI). 12, record 1, French, - conservateur%20de%20cap
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Instrumentos y equipo de vuelo (Industria aeronáutica)
- Pilotaje y navegación aérea
- Instrumentos de navegación
Record 1, Main entry term, Spanish
- indicador giroscópico de rumbo
1, record 1, Spanish, indicador%20girosc%C3%B3pico%20de%20rumbo
correct, masculine noun, officially approved
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 OBS
indicador giroscópico de rumbo : término aceptado oficialmente por la Organización de Aviación Civil Internacional (OACI). 2, record 1, Spanish, - indicador%20girosc%C3%B3pico%20de%20rumbo
Record 2 - internal organization data 2010-07-09
Record 2, English
Record 2, Subject field(s)
- General Mechanics (Physics)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 2, Main entry term, English
- gyroscopic inertia
1, record 2, English, gyroscopic%20inertia
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- rigidity in space 2, record 2, English, rigidity%20in%20space
correct
- rigidity 3, record 2, English, rigidity
correct
- gyro's rigidity in space 4, record 2, English, gyro%27s%20rigidity%20in%20space
correct
- gyroscopic rigidity in space 5, record 2, English, gyroscopic%20rigidity%20in%20space
correct
- fixity 3, record 2, English, fixity
correct
- principle of rigidity in space 6, record 2, English, principle%20of%20rigidity%20in%20space
correct
- gyroscopic effect 7, record 2, English, gyroscopic%20effect
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
The tendency of any rotating body, if undisturbed, to maintain its plane of rotation. 5, record 2, English, - gyroscopic%20inertia
Record number: 2, Textual support number: 1 CONT
Rigidity in space. The gyroscope resists turning. When it is "gimbaled"(free to move in a given direction) such that it is free to move either in 1, 2 or 3 dimensions, any surface such as an instrument dial attached to the gyro assembly will remain rigid in space even though the case of the gyro turns. The attitude indicator(AI) and the heading indicator(HI) use this property of rigidity in space for their operation. 6, record 2, English, - gyroscopic%20inertia
Record number: 2, Textual support number: 2 CONT
The turning of the frisbee mostly produces "stability", that is the spinning keeps the frisbee level in flight due to the "gyroscopic" effect, i.e. any spinning disc likes to stay spinning at the same angle. 8, record 2, English, - gyroscopic%20inertia
Record number: 2, Textual support number: 3 CONT
A gyroscope is any rotating body that exhibits two fundamental properties: gyroscopic inertia, or rigidity in space, and precession, the tilting of the axis at right angles to any force tending to alter the plane of rotation. These properties are inherent in all rotating bodies, including the earth itself. 9, record 2, English, - gyroscopic%20inertia
Record number: 2, Textual support number: 1 PHR
To remain rigid in space. 6, record 2, English, - gyroscopic%20inertia
Record 2, French
Record 2, Domaine(s)
- Mécanique générale (Physique)
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 2, Main entry term, French
- inertie gyroscopique
1, record 2, French, inertie%20gyroscopique
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- effet gyroscopique 2, record 2, French, effet%20gyroscopique
correct, masculine noun
- principe de la fixité dans l'espace 3, record 2, French, principe%20de%20la%20fixit%C3%A9%20dans%20l%27espace
correct, masculine noun
- fixité 4, record 2, French, fixit%C3%A9
correct, feminine noun
- fixité dans l'espace 5, record 2, French, fixit%C3%A9%20dans%20l%27espace
correct, feminine noun
- immobilité dans l'espace 6, record 2, French, immobilit%C3%A9%20dans%20l%27espace
correct, feminine noun
- loi de fixité 7, record 2, French, loi%20de%20fixit%C3%A9
correct, feminine noun
- inertialité 8, record 2, French, inertialit%C3%A9
correct, feminine noun
- fixité dans l'espace absolu 8, record 2, French, fixit%C3%A9%20dans%20l%27espace%20absolu
correct, feminine noun
- fixité de l'axe propre du gyroscope 9, record 2, French, fixit%C3%A9%20de%20l%27axe%20propre%20du%20gyroscope
feminine noun
- rigidité dans l'espace 3, record 2, French, rigidit%C3%A9%20dans%20l%27espace
see observation, feminine noun
- principe de la rigidité dans l'espace 3, record 2, French, principe%20de%20la%20rigidit%C3%A9%20dans%20l%27espace
see observation, masculine noun
- principe de la rigidité gyroscopique dans l'espace 3, record 2, French, principe%20de%20la%20rigidit%C3%A9%20gyroscopique%20dans%20l%27espace
see observation, masculine noun
- rigidité gyroscopique 10, record 2, French, rigidit%C3%A9%20gyroscopique
see observation, feminine noun
- fixité gyroscopique 11, record 2, French, fixit%C3%A9%20gyroscopique
feminine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Tendance qu'a un corps en rotation de maintenir son plan de rotation s'il n'est pas dérangé. 3, record 2, French, - inertie%20gyroscopique
Record number: 2, Textual support number: 1 CONT
L'inertie gyroscopique, appelée aussi effet gyroscopique, constitue la propriété fondamentale des gyroscopes. [...] Il s'agit d'un principe selon lequel tous les objets résistent naturellement à l'accélération ou au changement de direction. (Par exemple, les occupants d'une voiture sont projetés vers l'avant quand celle-ci s'arrête brusquement parce qu'en raison de leur inertie, les corps continuent leur mouvement vers l'avant même si la voiture s'est arrêtée.) Lorsqu'on parle d'inertie gyroscopique, on fait allusion à l'inertie que possède un corps qui tourne. Tous les objets tournant autour d'un axe ont tendance à maintenir une orientation fixe, c'est-à-dire une direction de rotation et une position fixes, si aucune force n'intervient. En d'autres mots, un objet qui tourne a tendance à rester dans la même position. 2, record 2, French, - inertie%20gyroscopique
Record number: 2, Textual support number: 2 CONT
Un gyroscope [...] utilise [...] la propriété caractéristique d'inertialité (fixité dans l'espace absolu), totale ou partielle de certains phénomènes physiques. 8, record 2, French, - inertie%20gyroscopique
Record number: 2, Textual support number: 1 OBS
Certains spécialistes contestent l'emploi du terme «rigidité» qui semble être un calque de l'anglais occasionnant un non-sens en français. 11, record 2, French, - inertie%20gyroscopique
Record 2, Key term(s)
- fixité gyroscopique
- propriété de fixité de l'axe propre du gyroscope
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 2002-08-26
Record 4, English
Record 4, Subject field(s)
- General Mechanics (Physics)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 4, Main entry term, English
- gyroscopic phenomenon
1, record 4, English, gyroscopic%20phenomenon
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 CONT
Gyroscopes can be used as devices for direction finding, guidance, and control. If a gyroscope, mounted on its gimbal rings, is set spinning about a horizontal axis, and the outer gimbal ring is rotated in a horizontal plane, then the inner gimbal ring, carrying the flywheel, tilts up out of the horizontal plane in which it, too first lay. After a few oscillations, damped out by friction, the axis of spin of the gyroscope settles down along a vertical direction. Inertial guidance systems make use of very similar phenomena. Once a gyroscope has been set spinning about a chosen axis, any motion that would cause it to deviate from this direction calls into existence a torque that can be used as an error signal to control corrective maneuvers... Some of the most important applications of gyroscopic phenomena are in aircraft instruments. A free(perfectly balanced) gyroscope can give a constant indication of a chosen reference direction for checking the correct course, and a gravitationally loaded gyroscope can be used to identify the true vertical at all times and so define an artificial horizon against which the pilot can measure the angles of bank and climb. 2, record 4, English, - gyroscopic%20phenomenon
Record 4, Key term(s)
- gyroscopic phenomena
Record 4, French
Record 4, Domaine(s)
- Mécanique générale (Physique)
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 4, Main entry term, French
- phénomène gyroscopique
1, record 4, French, ph%C3%A9nom%C3%A8ne%20gyroscopique
correct, masculine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 CONT
Le gyroscope construit par Foucault 1852 est un appareil qui dérive de son pendule. Comme lui, il met en évidence les effets de la rotation de la terre. Il est constitué d'une masse lourde, appelée rotor, en mouvement de rotation rapide autour d'un axe restant fixe dans un référentiel galiléen. Le gyroscope se caractérise par un moment cinétique élevé. Il existe des gyroscopes dont l'axe en rotation est lié à l'armature de l'appareil par deux axes et d'autres reliés à un seul axe. On retrouve le phénomène gyroscopique dans des jouets tels que les toupies. Il est utilisé dans des appareils appelés compas gyroscopiques servant au guidage des missiles, des avions et des satellites. 2, record 4, French, - ph%C3%A9nom%C3%A8ne%20gyroscopique
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2002-07-16
Record 5, English
Record 5, Subject field(s)
- General Mechanics (Physics)
- Flight Instruments and Equipment (Aeroindustry)
- Navigation Instruments
- Aircraft Piloting and Navigation
Record 5, Main entry term, English
- dynamic tuning
1, record 5, English, dynamic%20tuning
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 DEF
The adjustment of the gimbal inertia, flexure spring rate, or the spin rate of a rotor suspension system to achieve a condition in which the dynamically induced (negative) spring rate cancels the spring rate of the flexure suspension. 2, record 5, English, - dynamic%20tuning
Record number: 5, Textual support number: 1 CONT
The "dynamic tuning" of a dynamically tuned gyroscope(DTG) refers to a clever gimbal configuration that balances the torques from the support flexures with dynamic spring torques created by gimbal "flutter" while the gyro rotor spins. This configuration allows the gyro rotor to spin to a "free" rotor in two axes. 3, record 5, English, - dynamic%20tuning
Record 5, French
Record 5, Domaine(s)
- Mécanique générale (Physique)
- Instruments et équipement de bord (Constructions aéronautiques)
- Instruments de navigation
- Pilotage et navigation aérienne
Record 5, Main entry term, French
- accord dynamique
1, record 5, French, accord%20dynamique
masculine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 OBS
La plate-forme à cercles de suspension à trois axes, stabilisée par gyroscope, utilise deux gyroscopes accordés qui ont deux degrés de liberté, un rotor libre, de qualité inertielle, ainsi que trois accéléromètres à pendules. 2, record 5, French, - accord%20dynamique
Record number: 5, Textual support number: 2 OBS
Suspension dynamique accordée [...] La condition d'accord définissant la vitesse correcte relie les caractéristiques des barres de torsion et un moment d'inertie particulier de l'anneau interne. On l'appelle la «condition de tuning» et c'est ce qui donne à la technique le nom de gyroscope accordé. 3, record 5, French, - accord%20dynamique
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 2002-07-16
Record 6, English
Record 6, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Aircraft Piloting and Navigation
- Navigation Instruments
Record 6, Main entry term, English
- corrected for drift
1, record 6, English, corrected%20for%20drift
correct, adjective phrase
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 CONT
Notice that there is no knob to set the heading of the DG [directional gyro] to match that of the compass. Why? Because it is slaved. Slaved? Back in the tailcone of the aircraft, away from all ferrous metal, is a magnetic compass. The output of this compass is electrically "enhanced" and amplified through a "flux gate"... This signal is fed to the HSI to drive the DG portion of the unit. What this means is that the reading is very accurate, not subject to the vagrancies of the regular magnetic compass, and is constantly being corrected for drift. On some aircraft, this signal is also used to slave the ADF heading card. 2, record 6, English, - corrected%20for%20drift
Record number: 6, Textual support number: 2 CONT
The directional gyroscope is used in aircraft and is sometimes called a self-levelling free gyroscope corrected for drift. 3, record 6, English, - corrected%20for%20drift
Record 6, French
Record 6, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Pilotage et navigation aérienne
- Instruments de navigation
Record 6, Main entry term, French
- corrigé pour la dérive
1, record 6, French, corrig%C3%A9%20pour%20la%20d%C3%A9rive
adjective phrase
Record 6, Abbreviations, French
Record 6, Synonyms, French
- compensé pour la dérive 2, record 6, French, compens%C3%A9%20pour%20la%20d%C3%A9rive
adjective phrase
Record 6, Textual support, French
Record number: 6, Textual support number: 1 CONT
Déplacement d'un gyroscope corrigé. Dans le cas d'un gyroscope corrigé pour la dérive apparente due à la rotation de la Terre, on applique une correction de 15° sin latitude par heure à l'écrou de compensation de latitude. 1, record 6, French, - corrig%C3%A9%20pour%20la%20d%C3%A9rive
Record number: 6, Textual support number: 1 OBS
Description et fonctionnement du gyrolaser [...] sources d'erreurs et solutions apportées [...] dérive de l'onde stationnaire (onde bloquée dans la cavité et qui est toujours en rotation même si la cavité reste immobile) [...] solutions apportées : on élimine la dérive de l'onde stationnaire en utilisant des cavités où deux écoulements de gaz se font en sens inverse, par exemple avec une seule anode et deux cathodes placées sur les 2 côtés opposés d'un carré. Ainsi les mouvements gazeux se compensent et la dérive est presque éliminée. De plus, on utilise un dispositif électronique supplémentaire qui mesure et compense la dérive résiduelle de sorte que seules des perturbations imprévisibles peuvent engendrer une erreur systématique. 3, record 6, French, - corrig%C3%A9%20pour%20la%20d%C3%A9rive
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 2002-07-16
Record 7, English
Record 7, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Aircraft Piloting and Navigation
- Navigation Instruments
Record 7, Main entry term, English
- free directional gyro
1, record 7, English, free%20directional%20gyro
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
- unrestrained directional gyroscope 2, record 7, English, unrestrained%20directional%20gyroscope
correct
Record 7, Textual support, English
Record number: 7, Textual support number: 1 CONT
Some gyrosyn compass are fitted with a dial switch. In one position, the complete system is in operation. In the other position, the flux valve is shut off and the instrument operates as a free directional gyro. This feature is for use in high polar latitudes or under any other circumstances where magnetic indications are unreliable. 3, record 7, English, - free%20directional%20gyro
Record number: 7, Textual support number: 2 CONT
Humphrey manufactures two types of directional gyroscopes; free directional and magnetic north slaved ... Free directional gyros are not slaved in the yaw axis. They can be electrically "caged" to a known reference point and then uncaged to gather data. 4, record 7, English, - free%20directional%20gyro
Record number: 7, Textual support number: 1 OBS
See records "directional gyroscope/conservateur de cap" and "free gyro/gyroscope libre. " 2, record 7, English, - free%20directional%20gyro
Record 7, Key term(s)
- unrestrained directional gyro
Record 7, French
Record 7, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Pilotage et navigation aérienne
- Instruments de navigation
Record 7, Main entry term, French
- conservateur de cap autonome
1, record 7, French, conservateur%20de%20cap%20autonome
correct, masculine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
- conservateur de cap non asservi 2, record 7, French, conservateur%20de%20cap%20non%20asservi
masculine noun
- conservateur de cap libre 2, record 7, French, conservateur%20de%20cap%20libre
masculine noun
Record 7, Textual support, French
Record number: 7, Textual support number: 1 CONT
Certains gyrocompas sont munis d'un bouton-interrupteur. Une position indique que le système complet est en opération. Une autre indique que la sonde magnétométrique est coupée et que l'instrument fonctionne comme un conservateur de cap autonome. Cette caractéristique est nécessaire pour l'utilisation de l'instrument aux hautes latitudes polaires ou dans toutes les circonstances où les indications magnétiques ne sont pas fiables. 1, record 7, French, - conservateur%20de%20cap%20autonome
Record number: 7, Textual support number: 1 OBS
conservateur de cap : Gyroscope qui indique précisément et rapidement les changements de cap d'un appareil, souvent appelé «gyroscope directionnel». Dans la mesure où le conservateur de cap fonctionne avec un gyroscope, il fournit une indication régulière et précise du cap ou des virages. Le compas, qui est quant à lui soumis à l'accélération ou à la décélération, aux dénivellations et autres erreurs de navigation, oscille souvent ou a un tour d'avance ou de retard. Toutefois, comme les gyroscopes sont affectés par la précession, le pilote doit périodiquement régler le conservateur de cap en fonction du compas (sauf si le conservateur de cap est électroniquement asservi au compas). 3, record 7, French, - conservateur%20de%20cap%20autonome
Record number: 7, Textual support number: 2 OBS
gyroscope directionnel horizontal asservi / slaved directional gyroscope. 4, record 7, French, - conservateur%20de%20cap%20autonome
Record number: 7, Textual support number: 3 OBS
Voir les fiches «conservateur de cap / directional gyroscope» et «gyroscope libre / free gyro». 2, record 7, French, - conservateur%20de%20cap%20autonome
Record 7, Spanish
Record 7, Textual support, Spanish
Record 8 - internal organization data 2002-04-17
Record 8, English
Record 8, Subject field(s)
- Measuring Instruments (Engineering)
- General Mechanics (Physics)
- Aircraft Piloting and Navigation
Record 8, Main entry term, English
- dynamically tuned gyro
1, record 8, English, dynamically%20tuned%20gyro
correct
Record 8, Abbreviations, English
Record 8, Synonyms, English
- dynamically tuned gyroscope 2, record 8, English, dynamically%20tuned%20gyroscope
correct
- DTG 2, record 8, English, DTG
correct
- DTG 2, record 8, English, DTG
- tuned rotor gyro 3, record 8, English, tuned%20rotor%20gyro
correct
- tuned rotor gyroscope 4, record 8, English, tuned%20rotor%20gyroscope
correct
- tuned-rotor gyroscope 5, record 8, English, tuned%2Drotor%20gyroscope
correct
- tuned-gimbal gyroscope 6, record 8, English, tuned%2Dgimbal%20gyroscope
correct
- dry gyro 7, record 8, English, dry%20gyro
correct
- dry gyroscope 8, record 8, English, dry%20gyroscope
correct
Record 8, Textual support, English
Record number: 8, Textual support number: 1 DEF
A two-degree-of-freedom gyro in which a dynamically tuned flexure and gimbal mechanism both supports the rotor and provides angular freedom about axes perpendicular to the spin axis. 3, record 8, English, - dynamically%20tuned%20gyro
Record number: 8, Textual support number: 1 CONT
The "dynamic tuning" of a dynamically tuned gyroscope(DTG) refers to a clever gimbal configuration that balances the torques from the support flexure with dynamic spring torques created by gimbal "flutter" while the gyro rotor spins. This configuration allows the gyro rotor to spin to a "free" rotor in two axes. 2, record 8, English, - dynamically%20tuned%20gyro
Record 8, French
Record 8, Domaine(s)
- Instruments de mesure (Ingénierie)
- Mécanique générale (Physique)
- Pilotage et navigation aérienne
Record 8, Main entry term, French
- gyroscope à suspension dynamiquement accordée
1, record 8, French, gyroscope%20%C3%A0%20suspension%20dynamiquement%20accord%C3%A9e
correct, masculine noun
Record 8, Abbreviations, French
Record 8, Synonyms, French
- gyroscope à suspension dynamique 2, record 8, French, gyroscope%20%C3%A0%20suspension%20dynamique
correct, masculine noun
- gyroscope accordé 3, record 8, French, gyroscope%20accord%C3%A9
correct, masculine noun
- gyroscope mécanique à suspension dynamique 4, record 8, French, gyroscope%20m%C3%A9canique%20%C3%A0%20suspension%20dynamique
correct, masculine noun
- gyroscope à suspension élastique compensée 5, record 8, French, gyroscope%20%C3%A0%20suspension%20%C3%A9lastique%20compens%C3%A9e
correct, masculine noun
- gyroscope SEC 5, record 8, French, gyroscope%20SEC
correct, masculine noun
- gyroscope sec 6, record 8, French, gyroscope%20sec
correct, masculine noun
- gyroscope à suspension compensée 5, record 8, French, gyroscope%20%C3%A0%20suspension%20compens%C3%A9e
correct, masculine noun
- gyroscope à suspension accordée 5, record 8, French, gyroscope%20%C3%A0%20suspension%20accord%C3%A9e
masculine noun
- gyroscope à rotor syntonisé 7, record 8, French, gyroscope%20%C3%A0%20rotor%20syntonis%C3%A9
masculine noun
- gyroscope à suspension dynamique accordée 8, record 8, French, gyroscope%20%C3%A0%20suspension%20dynamique%20accord%C3%A9e
masculine noun
- gyroscope à rotor accordé 7, record 8, French, gyroscope%20%C3%A0%20rotor%20accord%C3%A9
masculine noun
Record 8, Textual support, French
Record number: 8, Textual support number: 1 CONT
Les gyroscopes à suspension dynamiquement accordée [...] sont des gyroscopes «deux axes», à faible débattement angulaire, dont la toupie est reliée au boîtier par un (ou deux) joints de Hooke; la charnière ainsi constituée se trouve à l'intérieur de la toupie. [...] Ces appareils présentent les avantages suivants : pas de liquide de flottaison (gyroscopes dits «secs»), pas de fils d'amenée de courant à l'élément sensible, pas de roulements à billes dans l'élément sensible, moteur d'entraînement séparé de l'élément sensible. 6, record 8, French, - gyroscope%20%C3%A0%20suspension%20dynamiquement%20accord%C3%A9e
Record number: 8, Textual support number: 2 CONT
Équations de la gyroscopie [...] Suspension dynamique accordée [...] le principe : Les paliers des articulations S1-S2 et S2-S3 ne sont plus des roulements, mais remplacés par [des] joints de Hooke ou encore des barres de torsion élastiques. Un calcul complexe montre qu'à une vitesse précise dite d'accord, la raideur des joints est compensée [...] par le couple des forces d'inertie centrifuge et la suspension ne présente plus alors aucune rigidité. Les débattements de la toupie, en orientation, sont limités à quelques degrés. La condition d'accord définissant la vitesse correcte relie les caractéristiques des barres de torsion et un moment d'inertie particulier de l'anneau interne. On l'appelle la condition de tuning et c'est ce qui donne à la technique le nom de gyroscope accordé. 9, record 8, French, - gyroscope%20%C3%A0%20suspension%20dynamiquement%20accord%C3%A9e
Record number: 8, Textual support number: 1 OBS
Suspension dynamique accordée [...] Il y a disparition du liquide de flottaison, le gyro est dit «dry gyro». L'usage de ces gyros est réservé aux centrales inertielles. 9, record 8, French, - gyroscope%20%C3%A0%20suspension%20dynamiquement%20accord%C3%A9e
Record number: 8, Textual support number: 2 OBS
[Noter] le jeu de mots entre notre «gyroscope SEC» et le «dry gyro» de la littérature anglo-saxonne, représentant un capteur sans liquide de flottaison (c'est bien le cas du gyroscope à suspension compensée); [...] 5, record 8, French, - gyroscope%20%C3%A0%20suspension%20dynamiquement%20accord%C3%A9e
Record 8, Key term(s)
- dry gyro
- gyroscope dit sec
Record 8, Spanish
Record 8, Textual support, Spanish
Record 9 - internal organization data 2002-04-17
Record 9, English
Record 9, Subject field(s)
- Measuring Instruments (Engineering)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 9, Main entry term, English
- controlled gyroscope
1, record 9, English, controlled%20gyroscope
correct
Record 9, Abbreviations, English
Record 9, Synonyms, English
- slaved gyro 2, record 9, English, slaved%20gyro
correct
Record 9, Textual support, English
Record number: 9, Textual support number: 1 CONT
Controlled gyroscopes fall into three categories : north-seeking, directional, and gyrovertical. The north-seeking gyro is used for marine gyrocompasses... The directional gyroscope is used in aircraft and is sometimes called a self-levelling free gyroscope corrected for drift... The gyrovertical has its spin axis vertical and is used to detect and measure angles of roll and pitch. 1, record 9, English, - controlled%20gyroscope
Record number: 9, Textual support number: 1 OBS
A free gyro that is not slaved to any Earth reference (as the vertical and directional gyros and the gyrocompass are) will tend to maintain a fixed direction in inertial space, that is, with respect to fixed stars. 3, record 9, English, - controlled%20gyroscope
Record 9, Key term(s)
- controlled gyro
- slaved gyroscope
Record 9, French
Record 9, Domaine(s)
- Instruments de mesure (Ingénierie)
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 9, Main entry term, French
- gyroscope asservi
1, record 9, French, gyroscope%20asservi
correct, masculine noun
Record 9, Abbreviations, French
Record 9, Synonyms, French
- gyro asservi 2, record 9, French, gyro%20asservi
correct, masculine noun
Record 9, Textual support, French
Record number: 9, Textual support number: 1 CONT
L'horizon artificiel. Il mesure simultanément une assiette et une inclinaison. L'utilisation d'un gyroscope asservi à la verticale lui permet de mesurer les angles compris entre l'axe du gyroscope et les axes liés à l'avion. 3, record 9, French, - gyroscope%20asservi
Record 9, Spanish
Record 9, Textual support, Spanish
Record 10 - internal organization data 2002-04-17
Record 10, English
Record 10, Subject field(s)
- General Mechanics (Physics)
- Flight Instruments and Equipment (Aeroindustry)
- Navigation Instruments
Record 10, Main entry term, English
- center of mass of the gyroscope
1, record 10, English, center%20of%20mass%20of%20the%20gyroscope
correct
Record 10, Abbreviations, English
Record 10, Synonyms, English
- gyroscope's center of mass 2, record 10, English, gyroscope%27s%20center%20of%20mass
correct
- center of mass of the gyro 3, record 10, English, center%20of%20mass%20of%20the%20gyro
correct
Record 10, Textual support, English
Record number: 10, Textual support number: 1 CONT
Because the gyroscope is supported as a pendulum, the support point, the center of mass of the gyroscope, and the center of the earth tend to lie along the same straight, vertical line. 4, record 10, English, - center%20of%20mass%20of%20the%20gyroscope
Record number: 10, Textual support number: 2 CONT
Gravity acting on the center of mass of the gyroscope causes a torque at the gyroscope's point of contact with the surface on which it is resting. If you spun the gyroscope perfectly vertically, it wouldn’t do that(until friction perturbed it) because the force would be acting directly through the center of mass, nor would it precess like that if it were in free fall(because it is not in contact with any surface capable of inducing a torque). 5, record 10, English, - center%20of%20mass%20of%20the%20gyroscope
Record number: 10, Textual support number: 1 OBS
Center of Mass - This is the point at which the entire mass of an object is centered. 6, record 10, English, - center%20of%20mass%20of%20the%20gyroscope
Record 10, Key term(s)
- gyroscope center of mass
- center of mass
Record 10, French
Record 10, Domaine(s)
- Mécanique générale (Physique)
- Instruments et équipement de bord (Constructions aéronautiques)
- Instruments de navigation
Record 10, Main entry term, French
- centre de masse du gyroscope
1, record 10, French, centre%20de%20masse%20du%20gyroscope
correct, masculine noun
Record 10, Abbreviations, French
Record 10, Synonyms, French
- centre d'inertie du gyro 2, record 10, French, centre%20d%27inertie%20du%20gyro
correct, masculine noun
- centre d'inertie du gyroscope 3, record 10, French, centre%20d%27inertie%20du%20gyroscope
correct, masculine noun
Record 10, Textual support, French
Record number: 10, Textual support number: 1 CONT
Gyros de références inertielles : Admettons que le montage de Cardan est idéal et le centrage de O parfait, c'est-à-dire que O est à la fois le point de croisement des axes des articulations et le centre d'inertie du gyro. Dans ces conditions en l'absence de tout couple moteur le gyro ne reçoit aucun couple et donc son axe reste inertiellement fixe. 2, record 10, French, - centre%20de%20masse%20du%20gyroscope
Record number: 10, Textual support number: 1 OBS
En pratique, le gyroscope est formé par un disque installé dans une monture à cardan qui permet la liberté de mouvement dans toutes les directions. Si le gyroscope est bien équilibré, c'est-à-dire si son centre de masse est exactement au centre de la suspension, son axe de rotation conservera sa direction par rapport aux étoiles fixes. 4, record 10, French, - centre%20de%20masse%20du%20gyroscope
Record number: 10, Textual support number: 2 OBS
centre de masse : Point auquel est associée une masse égale à la masse d'un système donné tel que par rapport à tous les plans, le moment statique de ce point soit égal à celui du système. 5, record 10, French, - centre%20de%20masse%20du%20gyroscope
Record 10, Key term(s)
- centre de masse
Record 10, Spanish
Record 10, Textual support, Spanish
Record 11 - internal organization data 2001-09-20
Record 11, English
Record 11, Subject field(s)
- General Mechanics (Physics)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 11, Main entry term, English
- tuning condition 1, record 11, English, tuning%20condition
Record 11, Abbreviations, English
Record 11, Synonyms, English
- tuned condition 1, record 11, English, tuned%20condition
Record 11, Textual support, English
Record number: 11, Textual support number: 1 OBS
The "dynamic tuning" of a dynamically tuned gyroscope(DTG) refers to a clever gimbal configuration that balances the torques from the support flexure with dynamic spring torques created by gimbal "flutter" while the gyro rotor spins. This configuration allows the gyro rotor to spin to a "free" rotor in two axes. 2, record 11, English, - tuning%20condition
Record 11, French
Record 11, Domaine(s)
- Mécanique générale (Physique)
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 11, Main entry term, French
- condition d'accord
1, record 11, French, condition%20d%27accord
correct, feminine noun
Record 11, Abbreviations, French
Record 11, Synonyms, French
- condition de compensation 2, record 11, French, condition%20de%20compensation
correct, feminine noun
- condition de tuning 3, record 11, French, condition%20de%20tuning
feminine noun
Record 11, Textual support, French
Record number: 11, Textual support number: 1 CONT
Équations de la gyroscopie [...] Suspension dynamique accordée [...] le principe : Les paliers des articulations S1-S2 et S2-S3 ne sont plus des roulements, mais remplacés par [des] joints de Hooke ou encore des barres de torsion élastiques. Un calcul complexe montre qu'à une vitesse précise dite d'accord, la raideur des joints est compensée [...] par le couple des forces d'inertie centrifuge et la suspension ne présente plus alors aucune rigidité. Les débattements de la toupie, en orientation, sont limités à quelques degrés. La condition d'accord définissant la vitesse correcte relie les caractéristiques des barres de torsion et un moment d'inertie particulier de l'anneau interne. On l'appelle la condition de tuning et c'est ce qui donne à la technique le nom de gyroscope accordé. 3, record 11, French, - condition%20d%27accord
Record number: 11, Textual support number: 2 CONT
Le principe de fonctionnement du gyroscope à suspension accordée consiste à réaliser une exacte compensation entre la raideur statique négative -K, due aux barres de torsion, et la raideur dynamique moyenne positive, due à l'inertie de l'anneau intermédiaire. Cela se traduit par la condition de compensation ou d'accord (tuning) suivante : [formule xyz]. 2, record 11, French, - condition%20d%27accord
Record 11, Spanish
Record 11, Textual support, Spanish
Record 12 - internal organization data 2001-09-14
Record 12, English
Record 12, Subject field(s)
- Lasers and Masers
- Optics
- Aircraft Piloting and Navigation
- Flight Instruments and Equipment (Aeroindustry)
Record 12, Main entry term, English
- square optical cavity laser gyro
1, record 12, English, square%20optical%20cavity%20laser%20gyro
correct
Record 12, Abbreviations, English
Record 12, Synonyms, English
- square cavity laser gyro 1, record 12, English, square%20cavity%20laser%20gyro
correct
Record 12, Textual support, English
Record number: 12, Textual support number: 1 OBS
The Canterbury Ring Laser, built in the Department of Physics principally by Morrie Poulton and Clive Rowe under the guidance of Professor Hans Bilger of Oklahoma State University, is a large laser gyroscope with an unusually high frequency resolution... The Canterbury ring system has a nearly square optical cavity with an area of 0. 7547 square metres and a perimeter of 3. 477 m(and so a free spectral range of 86. 22 MHz). 2, record 12, English, - square%20optical%20cavity%20laser%20gyro
Record number: 12, Textual support number: 2 OBS
Specialized configurations - a triple XYZ axis triangular cavity laser in a solid glass block for an optical ring laser gyro, for example - also exist but are much much less common - you probably won’t find one of these at a local flea market! 3, record 12, English, - square%20optical%20cavity%20laser%20gyro
Record 12, Key term(s)
- square optical cavity laser gyroscope
Record 12, French
Record 12, Domaine(s)
- Masers et lasers
- Optique
- Pilotage et navigation aérienne
- Instruments et équipement de bord (Constructions aéronautiques)
Record 12, Main entry term, French
- gyrolaser à cavité carrée
1, record 12, French, gyrolaser%20%C3%A0%20cavit%C3%A9%20carr%C3%A9e
correct, masculine noun
Record 12, Abbreviations, French
Record 12, Synonyms, French
Record 12, Textual support, French
Record number: 12, Textual support number: 1 CONT
Le gyrolaser est un oscillateur optique dans lequel un laser émet deux ondes progressives indépendantes qui parcourent une cavité résonnante en sens contraire l'une de l'autre. Dans les gyrolasers des centrales Sagem [...] cette cavité a la forme d'un triangle équilatéral et trois électrodes (deux anodes et une cathode) excitent un mélange d'hélium et de néon créant ainsi un milieu amplificateur. Des gyrolasers à cavité carrée ont aussi été développés. 1, record 12, French, - gyrolaser%20%C3%A0%20cavit%C3%A9%20carr%C3%A9e
Record 12, Spanish
Record 12, Textual support, Spanish
Record 13 - internal organization data 2001-08-30
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
- roll error
1, record 13, English, roll%20error
correct
Record 13, Abbreviations, English
Record 13, Synonyms, English
- rolling error 2, record 13, English, rolling%20error
correct
Record 13, Textual support, English
Record number: 13, Textual support number: 1 CONT
SYLLABUSes OF EXAMINATIONS... Gyro Compass. Properties of the free gyroscope; relationship between applied force and precession; effect of the earth's rotation on a free gyroscope, drift and tilt; errors associated with gyro compasses; latitude, course and speed error, ballistic deflection, rolling error; latitude, course and speed correction; fundamental classes of gyro compass... 2, record 13, English, - roll%20error
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
- erreur de roulis
1, record 13, French, erreur%20de%20roulis
correct, feminine noun
Record 13, Abbreviations, French
Record 13, Synonyms, French
Record 13, Textual support, French
Record number: 13, Textual support number: 1 CONT
Programme des examens [...] Compas gyroscopiques : Les propriétés du gyroscope libre, la relation entre la force appliquée et la précession, l'effet de la rotation de la Terre sur un gyroscope libre, la dérive et l'inclinaison les erreurs associées aux compas gyroscopiques, l'erreur de latitude, de route et de vitesse, la déflexion balistique et l'erreur de roulis, la correction des erreurs de latitude, de route et de vitesse, les principales catégories de compas gyroscopiques [...] 2, record 13, French, - erreur%20de%20roulis
Record 13, Spanish
Record 13, Textual support, Spanish
Record 14 - internal organization data 2001-08-28
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
- spherical body gyro 1, record 14, English, spherical%20body%20gyro
Record 14, Abbreviations, English
Record 14, Synonyms, English
- spherical ball gyro 1, record 14, English, spherical%20ball%20gyro
Record 14, Textual support, English
Record number: 14, Textual support number: 1 OBS
The term gyroscope is commonly applied to spherical, wheel-shaped, or disk-shaped bodies that are universally mounted to be free to rotate in any direction; they are used to demonstrate these properties or to indicate movements in space. 2, record 14, English, - spherical%20body%20gyro
Record number: 14, Textual support number: 2 OBS
A gyroscope made of a spherical ball floated in a hemispherical bowl using compressed air as the support mechanism was described ... in the American Journal of Physics. 3, record 14, English, - spherical%20body%20gyro
Record 14, Key term(s)
- spherical body gyroscope
- spherical ball gyroscope
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
- gyroscope à toupie sphérique
1, record 14, French, gyroscope%20%C3%A0%20toupie%20sph%C3%A9rique
correct, masculine noun
Record 14, Abbreviations, French
Record 14, Synonyms, French
Record 14, Textual support, French
Record number: 14, Textual support number: 1 CONT
Dans les gyroscopes libres (ou 2 axes), [delta] peut se déplacer, par rapport au boîtier, dans un angle solide entourant un axe Z lié au boîtier, appelé axe de zéro; dans certains cas, cet angle solide couvre tout l'espace, par exemple dans le gyroscope à toupie sphérique portée par champ électrique. 1, record 14, French, - gyroscope%20%C3%A0%20toupie%20sph%C3%A9rique
Record 14, Spanish
Record 14, Textual support, Spanish
Record 15 - internal organization data 2001-08-28
Record 15, English
Record 15, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Aircraft Piloting and Navigation
- Navigation Instruments
Record 15, Main entry term, English
- spherical body
1, record 15, English, spherical%20body
correct
Record 15, Abbreviations, English
Record 15, Synonyms, English
- spherical ball 2, record 15, English, spherical%20ball
correct
Record 15, Textual support, English
Record number: 15, Textual support number: 1 CONT
The term gyroscope is commonly applied to spherical, wheel-shaped, or disk-shaped bodies that are universally mounted to be free to rotate in any direction; they are used to demonstrate these properties or to indicate movements in space. 1, record 15, English, - spherical%20body
Record number: 15, Textual support number: 2 CONT
A gyroscope made of a spherical ball floated in a hemispherical bowl using compressed air as the support mechanism was described ... in the American Journal of Physics. 2, record 15, English, - spherical%20body
Record 15, French
Record 15, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Pilotage et navigation aérienne
- Instruments de navigation
Record 15, Main entry term, French
- toupie sphérique
1, record 15, French, toupie%20sph%C3%A9rique
correct, feminine noun
Record 15, Abbreviations, French
Record 15, Synonyms, French
Record 15, Textual support, French
Record number: 15, Textual support number: 1 CONT
Dans les gyroscopes libres (ou 2 axes), [delta] peut se déplacer, par rapport au boîtier, dans un angle solide entourant un axe Z lié au boîtier, appelé axe de zéro; dans certains cas, cet angle solide couvre tout l'espace, par exemple dans le gyroscope à toupie sphérique portée par champ électrique. 1, record 15, French, - toupie%20sph%C3%A9rique
Record number: 15, Textual support number: 1 OBS
Nous appelons «toupie» (gyro wheel, gyro rotor) un corps de révolution autour d'un axe [delta] susceptible d'être lancé en rotation rapide autour de cet axe. 2, record 15, French, - toupie%20sph%C3%A9rique
Record 15, Spanish
Record 15, Textual support, Spanish
Record 16 - internal organization data 2001-08-13
Record 16, English
Record 16, Subject field(s)
- Applications of Electronics
- Aircraft Piloting and Navigation
- Flight Instruments and Equipment (Aeroindustry)
Record 16, Main entry term, English
- pitch pickoff
1, record 16, English, pitch%20pickoff
correct
Record 16, Abbreviations, English
Record 16, Synonyms, English
Record 16, Textual support, English
Record number: 16, Textual support number: 1 CONT
During heading align, the rotor of the resolver is positioned so that it transforms the N-S and E-W liquid level signals into pitch and roll components which are referenced to heading. The pitch component is amplified, demodulated and summed with amplified and demodulated feedback signals from the VG [vertical gyro] roll and pitch pickoffs and the pitch synchro. The combined signal is then modulated, amplified and converted to DC [direct current] to drive the platform pitch gimbal torque motor until the input signals are nulled. 2, record 16, English, - pitch%20pickoff
Record number: 16, Textual support number: 2 CONT
The AUTOFLUG FGC T is a cold-gas driven free displacement gyroscope concerning roll axis and yaw(pitch) axis. The FGC T consists of the following subassemblies :Gyroscope housing, gimbal bolt mechanism, gimbal system. Gyroscope drive consisting of : gas bottle and locking mechanism, roll pickoff, pitch pickoff and pickoff electronic. 3, record 16, English, - pitch%20pickoff
Record 16, Key term(s)
- pitch pick-off
Record 16, French
Record 16, Domaine(s)
- Applications de l'électronique
- Pilotage et navigation aérienne
- Instruments et équipement de bord (Constructions aéronautiques)
Record 16, Main entry term, French
- capteur de tangage
1, record 16, French, capteur%20de%20tangage
correct, masculine noun
Record 16, Abbreviations, French
Record 16, Synonyms, French
Record 16, Textual support, French
Record number: 16, Textual support number: 1 CONT
Les capteurs mesurant des angles autour d'axes proches de l'axe X du satellite sont généralement qualifiés de capteurs de roulis, les capteurs mesurant des angles autour d'axes proches de l'axe Y sont de même qualifiés de capteurs de tangage, et les capteurs mesurant des angles autour d'axes proches de l'axe Z sont qualifiés de capteurs de lacet. Ceci ne signifie pas que ces capteurs mesurent des angles de Cardan à partir d'un repère de référence inertiel, ils peuvent très bien mesurer par exemple un angle dièdre entre le plan (X, Z) et le plan (X, Soleil), on parlera dans ce cas d'un capteur de roulis Soleil. 2, record 16, French, - capteur%20de%20tangage
Record number: 16, Textual support number: 2 CONT
Durant l'alignement sur le cap, le rotor du résolver est mis en position de telle sorte qu'il transforme les signaux des niveaux à liquide N.-S. et E.-O. en composantes de tangage et de roulis en référence au cap. La composante de tangage est amplifiée, démodulée et composée avec des signaux de réaction amplifiés et démodulés venant des capteurs de roulis et de tangage du VG [gyroscope directionnel] et du synchro de tangage. Ce signal composé est alors modulé, amplifié et converti en courant continu pour entraîner le moteur couple du cardan de tangage de la plate-forme jusqu'à ce que les signaux d'entrée soient annulés. 3, record 16, French, - capteur%20de%20tangage
Record number: 16, Textual support number: 1 OBS
Quand le véhicule est connecté à un PC par un lien, l'interface permet d'agir directement sur les actionneurs (propulseur et gouvernes). Cette interface permet aussi de visualiser en temps réel, les données issues des capteurs : roulis, tangage, lacet, profondeur, vitesse de roulis et de tangage, ainsi que d'afficher les coordonnées fournies par le récepteur GPS. 4, record 16, French, - capteur%20de%20tangage
Record 16, Spanish
Record 16, Textual support, Spanish
Record 17 - internal organization data 2001-06-22
Record 17, English
Record 17, Subject field(s)
- General Mechanics (Physics)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 17, Main entry term, English
- rigid in space
1, record 17, English, rigid%20in%20space
correct, adjective phrase
Record 17, Abbreviations, English
Record 17, Synonyms, English
Record 17, Textual support, English
Record number: 17, Textual support number: 1 CONT
The gyroscope exhibits two predominant characteristics. Rigidity in space. Precession. Rigidity in space. The gyroscope resists turning. When it is "gimbaled"(free to move in a given direction) such that it is free to move either in 1, 2 or 3 dimensions, any surface such as an instrument dial attached to the gyro assembly will remain rigid in space even though the case of the gyro turns. The attitude indicator(AI) and the heading indicator(HI) use this property of rigidity in space for their operation. 2, record 17, English, - rigid%20in%20space
Record number: 17, Textual support number: 1 PHR
Remain rigid in space. 2, record 17, English, - rigid%20in%20space
Record 17, French
Record 17, Domaine(s)
- Mécanique générale (Physique)
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 17, Main entry term, French
- fixe dans l'espace
1, record 17, French, fixe%20dans%20l%27espace
correct, adjective phrase
Record 17, Abbreviations, French
Record 17, Synonyms, French
Record 17, Textual support, French
Record number: 17, Textual support number: 1 CONT
Le gyroscope a été imaginé par Foucault pour mettre en évidence le mouvement de rotation de la Terre. Son emploi repose sur ce principe de mécanique que lorsqu'un corps, qui n'est soumis à aucune force extérieure, est animé d'un mouvement de rotation autour d'un de ses axes principaux d'inertie, cet axe doit rester parallèle à lui-même si l'on vient à déplacer le corps d'une manière quelconque, tout en laissant l'axe libre de prendre toutes les directions. Si donc, on imagine qu'une toupie soit suspendue de manière à être soustraite à l'action de la pesanteur, et de façon que son axe de rotation puisse s'orienter dans tous les sens, il arrivera que cet axe conservera une direction fixe dans l'espace, quoi qu'il soit entraîné par le mouvement de la terre; [...] 2, record 17, French, - fixe%20dans%20l%27espace
Record number: 17, Textual support number: 1 PHR
Rester fixe dans l'espace. 3, record 17, French, - fixe%20dans%20l%27espace
Record number: 17, Textual support number: 2 PHR
Conserver une direction fixe dans l'espace. 2, record 17, French, - fixe%20dans%20l%27espace
Record 17, Spanish
Record 17, Textual support, Spanish
Record 18 - internal organization data 2001-06-21
Record 18, English
Record 18, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Launching and Space Maneuvering
Record 18, Main entry term, English
- unrestrained three-frame gyroscope
1, record 18, English, unrestrained%20three%2Dframe%20gyroscope
correct
Record 18, Abbreviations, English
Record 18, Synonyms, English
- free three-frame gyroscope 1, record 18, English, free%20three%2Dframe%20gyroscope
correct
Record 18, Textual support, English
Record number: 18, Textual support number: 1 CONT
Three-frame gyroscopes. The unrestrained or "free" three-frame gyroscope has little practical use, because its spin axis is subject to tilting and drifting owing to the rotation of the Earth. 1, record 18, English, - unrestrained%20three%2Dframe%20gyroscope
Record number: 18, Textual support number: 1 OBS
The Two Frame Gyroscope. When the rotor is spinning and the spin axis is in a horizontal plane a definite resistance will be felt owing to gyroscope inertia, at the same time the spin axis will begin to precess in a vertical plane and will continue to do so with sufficient power to lift light weights until all the gyroscopic inertia disappears due to the rotor slowing and stopping. The Three Frame Gyroscope. If the base of a three framed gyroscope is held in the hand with the rotor spinning and turned about any of the three axes, the rotor will continue to point in the original direction in space. This property is known as gyroscope inertia. 2, record 18, English, - unrestrained%20three%2Dframe%20gyroscope
Record number: 18, Textual support number: 2 OBS
See record "free gyroscope/gyroscope libre. " 3, record 18, English, - unrestrained%20three%2Dframe%20gyroscope
Record 18, Key term(s)
- unrestrained three frame gyroscope
- unrestrained three framed gyroscope
- free three frame gyroscope
- free three framed gyroscope
Record 18, French
Record 18, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Pilotage et navigation aérienne
- Instruments de navigation
- Lancement et manœuvres dans l'espace
Record 18, Main entry term, French
- gyroscope libre à trois cadres
1, record 18, French, gyroscope%20libre%20%C3%A0%20trois%20cadres
proposal, masculine noun
Record 18, Abbreviations, French
Record 18, Synonyms, French
Record 18, Textual support, French
Record number: 18, Textual support number: 1 OBS
L'analyse des données provenant des trois encodeurs optiques du gyroscope démontre sans doute qu'au moins un des axes s'est bloqué très tôt au cours du vol. Le gyroscope n'étant plus libre de pivoter sur trois degrés de liberté, des forces de précession sont probablement apparues, causant des rotations aux axes libres qui ne correspondent pas à des mouvements réels de la fusée en vol. Comme le gyroscope a pu être récupéré, un examen de la structure a été effectué après le vol. L'équipe du Gaul a pu constater que le gyroscope a subi des dommages importants : les cadres externes et internes sont très déformés, l'axe des cadres brisé, plusieurs fils sont rompus et l'encodeur de l'axe des cadres présente une grande résistance à la rotation. 2, record 18, French, - gyroscope%20libre%20%C3%A0%20trois%20cadres
Record number: 18, Textual support number: 2 OBS
Suspension de Cardan. But : permettre au gyroscope de s'orienter librement quel que soit le mouvement de son support. [Consiste en] 3 cadres imbriqués tournant librement l'un par rapport à l'autre selon 3 axes d'orientations différentes. 3, record 18, French, - gyroscope%20libre%20%C3%A0%20trois%20cadres
Record number: 18, Textual support number: 3 OBS
Voir la fiche «gyroscope libre / free gyroscope». 1, record 18, French, - gyroscope%20libre%20%C3%A0%20trois%20cadres
Record 18, Spanish
Record 18, Textual support, Spanish
Record 19 - internal organization data 2001-06-21
Record 19, English
Record 19, Subject field(s)
- Measuring Instruments (Engineering)
- Flight Instruments and Equipment (Aeroindustry)
- Navigation Instruments
- Launching and Space Maneuvering
Record 19, Main entry term, English
- precision gyroscope
1, record 19, English, precision%20gyroscope
correct
Record 19, Abbreviations, English
Record 19, Synonyms, English
- precision gyro 2, record 19, English, precision%20gyro
correct
Record 19, Textual support, English
Record number: 19, Textual support number: 1 CONT
Precision gyroscopes. For high-accuracy applications the gyroscope must be free of extraneous sources of forces or torques, as the instrument cannot differentiate bearing torques generated by friction or torques caused by unbalances of the rotating member and its supporting structure from true input motions. Various construction techniques are used to circumvent these problems, leading to numerous types of gyroscopes, the most important of which are... [:] Floated gyroscope... Two-degree-of-freedom, dry, tuned-gimbal gyroscope... Electrostatically suspended gyro... Laser gyro. 3, record 19, English, - precision%20gyroscope
Record 19, French
Record 19, Domaine(s)
- Instruments de mesure (Ingénierie)
- Instruments et équipement de bord (Constructions aéronautiques)
- Instruments de navigation
- Lancement et manœuvres dans l'espace
Record 19, Main entry term, French
- gyroscope de précision
1, record 19, French, gyroscope%20de%20pr%C3%A9cision
correct, masculine noun
Record 19, Abbreviations, French
Record 19, Synonyms, French
Record 19, Textual support, French
Record number: 19, Textual support number: 1 CONT
Les systèmes de navigation par inertie les plus récents ont remplacé les gyroscopes de précision par des détecteurs au laser qui mesurent les mouvements de l'aéronef par rapport aux trois axes, c'est-à-dire tangage, roulis et lacet. Même s'ils ne sont pas plus précis que les gyroscopes conventionnels, les lasers ont, en revanche, une durée d'utilisation beaucoup plus longue entre les révisions [...] 1, record 19, French, - gyroscope%20de%20pr%C3%A9cision
Record 19, Key term(s)
- gyroscope de haute précision
Record 19, Spanish
Record 19, Textual support, Spanish
Record 20 - internal organization data 2001-06-21
Record 20, English
Record 20, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Aircraft Piloting and Navigation
- Navigation Instruments
Record 20, Main entry term, English
- aircraft gyrocompass
1, record 20, English, aircraft%20gyrocompass
correct
Record 20, Abbreviations, English
Record 20, Synonyms, English
Record 20, Textual support, English
Record number: 20, Textual support number: 1 CONT
The gyroscope principle has been utilized in many... applications such as the gyrocompass and gyropilot... A compensated magnetic compass, free from external accelerations, indicates magnetic north, which varies from true north... A gyrocompass, however, when properly adjusted, can be made to indicate true north... Aircraft gyrocompasses are based on automatically monitored directional gyroscopes in which the monitoring device senses the direction of the meridian and ensures that the gyroscope axis is maintained in this direction. The monitoring device consists of a magnetic sensing unit, called the flux valve, and allowance is made for variation in the direction of the Earth's magnetic field. 1, record 20, English, - aircraft%20gyrocompass
Record 20, Key term(s)
- airplane gyrocompas
Record 20, French
Record 20, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Pilotage et navigation aérienne
- Instruments de navigation
Record 20, Main entry term, French
- gyrocompas pour aéronef
1, record 20, French, gyrocompas%20pour%20a%C3%A9ronef
correct, masculine noun
Record 20, Abbreviations, French
Record 20, Synonyms, French
- compas gyroscopique d'aéronef 1, record 20, French, compas%20gyroscopique%20d%27a%C3%A9ronef
correct, masculine noun
Record 20, Textual support, French
Record number: 20, Textual support number: 1 OBS
Le gyroscope construit par Foucault [en] 1852 est un appareil qui dérive de son pendule. Comme lui, il met en évidence les effets de la rotation de la terre. Il est constitué d'une masse lourde, appelée rotor, en mouvement de rotation rapide autour d'un axe restant fixe dans un référentiel galiléen. [...] Il est utilisé dans des appareils appelés compas gyroscopiques servant au guidage des missiles, des avions et des satellites. 2, record 20, French, - gyrocompas%20pour%20a%C3%A9ronef
Record number: 20, Textual support number: 2 OBS
Gyrocompas (compas gyroscopique). Le gyrocompas permet de déterminer le cap (astronomique) d'un navire. L'élément central du gyrocompas est le rotor tournant à grande vitesse. Celui-ci est contenu dans une sphère flottant dans un liquide. 3, record 20, French, - gyrocompas%20pour%20a%C3%A9ronef
Record 20, Key term(s)
- compas gyroscopique d'avion
- gyrocompas pour avion
Record 20, Spanish
Record 20, Textual support, Spanish
Record 21 - internal organization data 2001-06-21
Record 21, English
Record 21, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Aircraft Piloting and Navigation
- Navigation Instruments
Record 21, Main entry term, English
- reference direction system
1, record 21, English, reference%20direction%20system
correct
Record 21, Abbreviations, English
Record 21, Synonyms, English
Record 21, Textual support, English
Record number: 21, Textual support number: 1 CONT
A most important aspect of constructing a gyroscope is to mount the rotating wheel so that it is free of all unwanted torques. If this can be achieved, the spin vector of the gyroscope does not change from its initial value and hence always points in the same direction with respect to the fixed stars. The gyroscope thus can function as an excellent reference direction system. 1, record 21, English, - reference%20direction%20system
Record number: 21, Textual support number: 1 OBS
reference direction: A direction used as a basis for comparison of other directions. 2, record 21, English, - reference%20direction%20system
Record 21, French
Record 21, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Pilotage et navigation aérienne
- Instruments de navigation
Record 21, Main entry term, French
- indicateur de direction de référence
1, record 21, French, indicateur%20de%20direction%20de%20r%C3%A9f%C3%A9rence
masculine noun
Record 21, Abbreviations, French
Record 21, Synonyms, French
Record 21, Textual support, French
Record number: 21, Textual support number: 1 OBS
Le gyroscope est un instrument dont la fonction est de mesurer la vitesse angulaire de rotation d'un système rigidement lié à son bâti. Il transforme une information mécanique (la rotation) en une information de nature analogique ou numérique (la mesure chiffrée de la vitesse de rotation). [...] Les gyroscopes classiques, mécaniques, sont basés sur la rotation rapide et entretenue d'un solide qui peut s'incliner indépendamment du bâti dans toutes les directions. Cette rotation rapide lui permet d'être très stable et d'indiquer une direction de référence [qui] permet de mesurer l'inclinaison du bâti selon trois axes de référence. 2, record 21, French, - indicateur%20de%20direction%20de%20r%C3%A9f%C3%A9rence
Record 21, Spanish
Record 21, Textual support, Spanish
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