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GYROSCOPIC INERTIA [13 records]
Record 1 - internal organization data 2014-06-02
Record 1, English
Record 1, Subject field(s)
- General Mechanics (Physics)
- Navigation Instruments
Record 1, Main entry term, English
- angular momentum
1, record 1, English, angular%20momentum
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- spin 2, record 1, English, spin
correct, noun
- spinning action 3, record 1, English, spinning%20action
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
It is... apparent that gyroscopic inertia depends on the angular velocity and the momentum of inertia of the rotor, or on its angular momentum. The rotor wheel is subject to the laws of rotational motion and inertia in that a freely rotating body will maintain a fixed direction in space, and the rotor tends to preserve its angular momentum, or spinning action, unless acted on by some external force. 3, record 1, English, - angular%20momentum
Record number: 1, Textual support number: 2 CONT
The first ... mechanical quantity [involved in gyroscopic motion] is the angular momentum, or "spin," of a gyroscope. Thus, the top can spin in either of two directions, described as clockwise or counterclockwise when looking along the axis of symmetry. Its angular momentum, or spin, can be represented as a directed line segment, called the spin vector, that points along the axis. 2, record 1, English, - angular%20momentum
Record 1, French
Record 1, Domaine(s)
- Mécanique générale (Physique)
- Instruments de navigation
Record 1, Main entry term, French
- moment angulaire
1, record 1, French, moment%20angulaire
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- spin 1, record 1, French, spin
masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Chaque électron d'un atome possède un moment angulaire orbital, qui serait dû à sa rotation autour du noyau selon les modèles classiques, et un moment angulaire intrinsèque, analogue au moment d'un gyroscope, appelé «spin». Dans le cas des noyaux, les moments angulaires sont colinéaires et leur rapport est appelé rapport gyromagnétique. 1, record 1, French, - moment%20angulaire
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Mecánica general (Física)
- Instrumentos de navegación
Record 1, Main entry term, Spanish
- momento angular
1, record 1, Spanish, momento%20angular
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
En un cuerpo sometido a una rotación circular, producto que resulta de multiplicar la fuerza aplicada en un punto del mismo por la distancia que media entre éste y el eje de rotación. 1, record 1, Spanish, - momento%20angular
Record 2 - internal organization data 2011-02-08
Record 2, English
Record 2, Subject field(s)
- Aircraft Airframe
- Aircraft Piloting and Navigation
Record 2, Main entry term, English
- take-off flaps
1, record 2, English, take%2Doff%20flaps
plural
Record 2, Abbreviations, English
Record 2, Synonyms, English
- flaps in take-off position 2, record 2, English, flaps%20in%20take%2Doff%20position
plural
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
The combination of friction loads, inertia loads, brake torque loads, air loads, and gyroscopic loads resulting from the wheels rotating at a peripheral speed...(with the flaps in take-off position at design take-off weight)... 2, record 2, English, - take%2Doff%20flaps
Record number: 2, Textual support number: 1 PHR
Select take-off flap. 1, record 2, English, - take%2Doff%20flaps
Record 2, Key term(s)
- takeoff flaps
- take off flaps
- take-off flap
- takeoff flap
- take off flap
- flaps in takeoff position
- flaps in the take off position
Record 2, French
Record 2, Domaine(s)
- Cellule d'aéronefs
- Pilotage et navigation aérienne
Record 2, Main entry term, French
- volets en position de décollage
1, record 2, French, volets%20en%20position%20de%20d%C3%A9collage
masculine noun, plural
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
[...] la combinaison des charges de frottement, des charges d'inertie, des charges de couple de freinage, des charges aérodynamiques et des charges gyroscopiques résultant de la rotation des roues à une vitesse tangentielle [...] (avec volets en position de décollage au poids de calcul au décollage) [...] 1, record 2, French, - volets%20en%20position%20de%20d%C3%A9collage
Record number: 2, Textual support number: 1 PHR
Sortir les volets en position de décollage. 2, record 2, French, - volets%20en%20position%20de%20d%C3%A9collage
Record 2, Key term(s)
- volet en position de décollage
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2010-07-09
Record 3, English
Record 3, Subject field(s)
- General Mechanics (Physics)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 3, Main entry term, English
- gyroscopic inertia
1, record 3, English, gyroscopic%20inertia
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- rigidity in space 2, record 3, English, rigidity%20in%20space
correct
- rigidity 3, record 3, English, rigidity
correct
- gyro's rigidity in space 4, record 3, English, gyro%27s%20rigidity%20in%20space
correct
- gyroscopic rigidity in space 5, record 3, English, gyroscopic%20rigidity%20in%20space
correct
- fixity 3, record 3, English, fixity
correct
- principle of rigidity in space 6, record 3, English, principle%20of%20rigidity%20in%20space
correct
- gyroscopic effect 7, record 3, English, gyroscopic%20effect
correct
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
The tendency of any rotating body, if undisturbed, to maintain its plane of rotation. 5, record 3, English, - gyroscopic%20inertia
Record number: 3, 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 3, English, - gyroscopic%20inertia
Record number: 3, 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 3, English, - gyroscopic%20inertia
Record number: 3, 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 3, English, - gyroscopic%20inertia
Record number: 3, Textual support number: 1 PHR
To remain rigid in space. 6, record 3, English, - gyroscopic%20inertia
Record 3, French
Record 3, Domaine(s)
- Mécanique générale (Physique)
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 3, Main entry term, French
- inertie gyroscopique
1, record 3, French, inertie%20gyroscopique
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
- effet gyroscopique 2, record 3, French, effet%20gyroscopique
correct, masculine noun
- principe de la fixité dans l'espace 3, record 3, French, principe%20de%20la%20fixit%C3%A9%20dans%20l%27espace
correct, masculine noun
- fixité 4, record 3, French, fixit%C3%A9
correct, feminine noun
- fixité dans l'espace 5, record 3, French, fixit%C3%A9%20dans%20l%27espace
correct, feminine noun
- immobilité dans l'espace 6, record 3, French, immobilit%C3%A9%20dans%20l%27espace
correct, feminine noun
- loi de fixité 7, record 3, French, loi%20de%20fixit%C3%A9
correct, feminine noun
- inertialité 8, record 3, French, inertialit%C3%A9
correct, feminine noun
- fixité dans l'espace absolu 8, record 3, French, fixit%C3%A9%20dans%20l%27espace%20absolu
correct, feminine noun
- fixité de l'axe propre du gyroscope 9, record 3, French, fixit%C3%A9%20de%20l%27axe%20propre%20du%20gyroscope
feminine noun
- rigidité dans l'espace 3, record 3, French, rigidit%C3%A9%20dans%20l%27espace
see observation, feminine noun
- principe de la rigidité dans l'espace 3, record 3, French, principe%20de%20la%20rigidit%C3%A9%20dans%20l%27espace
see observation, masculine noun
- principe de la rigidité gyroscopique dans l'espace 3, record 3, French, principe%20de%20la%20rigidit%C3%A9%20gyroscopique%20dans%20l%27espace
see observation, masculine noun
- rigidité gyroscopique 10, record 3, French, rigidit%C3%A9%20gyroscopique
see observation, feminine noun
- fixité gyroscopique 11, record 3, French, fixit%C3%A9%20gyroscopique
feminine noun
Record 3, Textual support, French
Record number: 3, 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 3, French, - inertie%20gyroscopique
Record number: 3, 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 3, French, - inertie%20gyroscopique
Record number: 3, 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 3, French, - inertie%20gyroscopique
Record number: 3, 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 3, French, - inertie%20gyroscopique
Record 3, Key term(s)
- fixité gyroscopique
- propriété de fixité de l'axe propre du gyroscope
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2007-04-05
Record 4, English
Record 4, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Spacecraft
Record 4, Main entry term, English
- three-frame gyroscope
1, record 4, English, three%2Dframe%20gyroscope
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
- three frame gyroscope 2, record 4, English, three%20frame%20gyroscope
correct
- three framed gyroscope 2, record 4, English, three%20framed%20gyroscope
correct
Record 4, Textual support, English
Record number: 4, Textual support number: 1 CONT
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 4, English, - three%2Dframe%20gyroscope
Record 4, Key term(s)
- three-frame gyro
- three frame gyro
- three framed gyroscope
- three-framed gyroscope
- three-framed gyro
Record 4, French
Record 4, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Pilotage et navigation aérienne
- Instruments de navigation
- Engins spatiaux
Record 4, Main entry term, French
- gyroscope à trois cadres
1, record 4, French, gyroscope%20%C3%A0%20trois%20cadres
correct, masculine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
- gyroscope à trois anneaux de cardan 1, record 4, French, gyroscope%20%C3%A0%20trois%20anneaux%20de%20cardan
correct, masculine noun
Record 4, Textual support, French
Record number: 4, 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 4, French, - gyroscope%20%C3%A0%20trois%20cadres
Record number: 4, Textual support number: 2 OBS
Gyroscopes avec deux axes et deux anneaux de cardan. 3, record 4, French, - gyroscope%20%C3%A0%20trois%20cadres
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)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 5, Main entry term, English
- apparent precession error
1, record 5, English, apparent%20precession%20error
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 CONT
Precession error. Frictional forces in the gyros system cause it to precess. This precession causes a creep or drift in the reading on the card, amounting approximately 3 degrees in 15 minutes. The gyro is also subject to apparent precession. Gyroscopic inertia keeps the spinning gyro fixed in space so that, relative to space, it does not move. But the earth rotating underneath it gives it an apparent motion relative to the earth. This causes an apparent drift, or precession, which varies with latitude... Precession error, both mechanical and apparent, must be corrected for at regular intervals of about 15 minutes. 1, record 5, English, - apparent%20precession%20error
Record number: 5, Textual support number: 1 OBS
apparent precession: Apparent change in the direction of the axis of rotation of a spinning body, as a gyroscope, due to rotation of the Earth. 2, record 5, English, - apparent%20precession%20error
Record 5, French
Record 5, Domaine(s)
- Mécanique générale (Physique)
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 5, Main entry term, French
- erreur de précession apparente
1, record 5, French, erreur%20de%20pr%C3%A9cession%20apparente
correct, feminine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 CONT
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. 1, record 5, French, - erreur%20de%20pr%C3%A9cession%20apparente
Record number: 5, Textual support number: 1 OBS
précession apparente : Déviation apparente de l'axe d'un gyroscope par rapport à la Terre. Elle est due à la rotation terrestre et non pas à une force appliquée au gyroscope. 2, record 5, French, - erreur%20de%20pr%C3%A9cession%20apparente
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 2002-07-05
Record 6, English
Record 6, Subject field(s)
- General Mechanics (Physics)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 6, Main entry term, English
- gyroscopic stiffness
1, record 6, English, gyroscopic%20stiffness
correct
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 CONT
Control Moment Gyros (CMGs) are torque-generating mechanisms that incorporate a single- or double-gimbaled spinning wheels. By rotating the gimbal axes, significant torques can be generated using the property of spinning bodies called gyroscopic stiffness. CMGs are often used for spacecraft attitude control, producing torques about all three of the spacecraft’s orthogonal axes. 2, record 6, English, - gyroscopic%20stiffness
Record number: 6, Textual support number: 2 CONT
... although gyroscopic matrices are nonlinear, they can be written as constant matrices because of the conservation of mass and the fact that the convective components of transport velocity are constants. Therefore there is no need to update the gyroscopic inertia and gyroscopic stiffness matrix during an analysis. 3, record 6, English, - gyroscopic%20stiffness
Record 6, French
Record 6, Domaine(s)
- Mécanique générale (Physique)
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 6, Main entry term, French
- raideur gyroscopique
1, record 6, French, raideur%20gyroscopique
correct, feminine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
- phénomène dit de raideur gyroscopique 2, record 6, French, ph%C3%A9nom%C3%A8ne%20dit%20de%20raideur%20gyroscopique
masculine noun
Record 6, Textual support, French
Record number: 6, Textual support number: 1 CONT
Gyroscopie [...] On peut [...] rappeler qu'en particulier si la rotation axiale se fait autour du grand axe d'inertie, l'orientation de cet axe reste fixe dans un repère inertiel. De plus dans le cas d'une grande vitesse de rotation axiale, le mouvement présente alors une très grande stabilité, appelée raideur gyroscopique, qui se manifeste par des mouvements très lents de l'axe du gyroscope, donc des vitesses angulaires très faibles et donc des accélérations angulaires encore plus faibles. 3, record 6, French, - raideur%20gyroscopique
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 2001-11-15
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
- mechanical precession
1, record 7, English, mechanical%20precession
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
Record 7, Textual support, English
Record number: 7, Textual support number: 1 CONT
Precession error. Frictional forces in the gyro system cause it to precess. This precession causes a creep or drift in the reading on the card, amounting approximately 3 degrees in 15 minutes. The gyro is also subject to apparent precession. Gyroscopic inertia keeps the spinning gyro fixed in space so that, relative to space, it does not move. But the earth rotating underneath it gives it an apparent motion relative to the earth. This causes an apparent drift, or precession, which varies with latitude... Precession error, both mechanical and apparent, must be corrected for at regular intervals of about 15 minutes. 1, record 7, English, - mechanical%20precession
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
- précession mécanique
1, record 7, French, pr%C3%A9cession%20m%C3%A9canique
correct, feminine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
- précession instrumentale 2, record 7, French, pr%C3%A9cession%20instrumentale
correct, feminine noun
Record 7, Textual support, French
Record number: 7, Textual support number: 1 CONT
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. 3, record 7, French, - pr%C3%A9cession%20m%C3%A9canique
Record number: 7, Textual support number: 2 CONT
Le compas gyromagnétique a une précession instrumentale Pi = - 1°/h (1 degré/heure vers la droite). 2, record 7, French, - pr%C3%A9cession%20m%C3%A9canique
Record number: 7, Textual support number: 3 CONT
Question 22 [...] Si le compas ne possède pas de dispositif de correction de taux horaire et si le gyro a une précession mécanique nulle, la valeur du cap gyro à 13h30min UTC est : A » Cgy = 249°; B » Cgy = 275,5°; C » Cgy = 254,5°; D » Cgy = 281°. 4, record 7, French, - pr%C3%A9cession%20m%C3%A9canique
Record number: 7, Textual support number: 1 PHR
Précession astronomique, de déplacement. 2, record 7, French, - pr%C3%A9cession%20m%C3%A9canique
Record 7, Spanish
Record 7, Textual support, Spanish
Record 8 - internal organization data 2001-08-07
Record 8, English
Record 8, Subject field(s)
- General Mechanics (Physics)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 8, Main entry term, English
- mechanical precession error
1, record 8, English, mechanical%20precession%20error
correct
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 CONT
Precession error. Frictional forces in the gyros system cause it to precess. This precession causes a creep or drift in the reading on the card, amounting approximately 3 degrees in 15 minutes. The gyro is also subject to apparent precession. Gyroscopic inertia keeps the spinning gyro fixed in space so that, relative to space, it does not move. But the earth rotating underneath it gives it an apparent motion relative to the earth. This causes an apparent drift, or precession, which varies with latitude... Precession error, both mechanical and apparent, must be corrected for at regular intervals of about 15 minutes. 1, record 8, English, - mechanical%20precession%20error
Record 8, French
Record 8, Domaine(s)
- Mécanique générale (Physique)
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 8, Main entry term, French
- erreur de précession mécanique
1, record 8, French, erreur%20de%20pr%C3%A9cession%20m%C3%A9canique
correct, feminine noun
Record 8, Abbreviations, French
Record 8, Synonyms, French
- erreur de précession instrumentale 2, record 8, French, erreur%20de%20pr%C3%A9cession%20instrumentale
feminine noun
Record 8, Textual support, French
Record number: 8, Textual support number: 1 CONT
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. 1, record 8, French, - erreur%20de%20pr%C3%A9cession%20m%C3%A9canique
Record number: 8, Textual support number: 1 OBS
Le compas gyromagnétique a une précession instrumentale Pi = - 1°/h (1 degré/heure vers la droite). 3, record 8, French, - erreur%20de%20pr%C3%A9cession%20m%C3%A9canique
Record 8, Spanish
Record 8, Textual support, Spanish
Record 9 - internal organization data 2001-08-07
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 error
1, record 9, English, precession%20error
correct
Record 9, Abbreviations, English
Record 9, Synonyms, English
Record 9, Textual support, English
Record number: 9, Textual support number: 1 CONT
Precession error. Frictional forces in the gyros system cause it to precess. This precession causes a creep or drift in the reading on the card, amounting approximately 3 degrees in 15 minutes. The gyro is also subject to apparent precession. Gyroscopic inertia keeps the spinning gyro fixed in space so that, relative to space, it does not move. But the earth rotating underneath it gives it an apparent motion relative to the earth. This causes an apparent drift, or precession, which varies with latitude... Precession error, both mechanical and apparent, must be corrected for at regular intervals of about 15 minutes. 1, record 9, English, - precession%20error
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
- erreur de précession
1, record 9, French, erreur%20de%20pr%C3%A9cession
correct, feminine noun
Record 9, Abbreviations, French
Record 9, Synonyms, French
Record 9, Textual support, French
Record number: 9, Textual support number: 1 CONT
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 9, French, - erreur%20de%20pr%C3%A9cession
Record 9, Spanish
Record 9, Textual support, Spanish
Record 10 - internal organization data 2001-06-21
Record 10, English
Record 10, Subject field(s)
- General Mechanics (Physics)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 10, Main entry term, English
- gyroscopic principle
1, record 10, English, gyroscopic%20principle
correct
Record 10, Abbreviations, English
Record 10, Synonyms, English
Record 10, Textual support, English
Record number: 10, Textual support number: 1 CONT
Gyroscopic principles. Any spinning object possesses gyroscopic characteristics. The central mechanism of the gyroscope is a wheel similar to a bicycle wheel. It’s outer rim has a heavy mass. It rotates at high speed on very low friction bearings. When it is rotating normally, it resists changes in direction. The gyroscope exhibits two predominant characteristics. Rigidity in space. Precession. 2, record 10, English, - gyroscopic%20principle
Record number: 10, Textual support number: 2 CONT
Hands-on experience with gyroscopes is a good way to help children understand rotational motion. Have students experiment with spinning tops on a large, hard, flat surface such as the gymnasium floor. The students should set the tops spinning and make observations about what happens when they push the spinning tops in certain directions. They can try applying force to the gyroscopes at different heights from the ground to see how this affects the movement of a spinning top. All this can be related to gyroscopic principles(such as precession and gyroscopic inertia), as well as applications of these principles(satellites, bicycles, etc.) in real life. 3, record 10, English, - gyroscopic%20principle
Record 10, French
Record 10, Domaine(s)
- Mécanique générale (Physique)
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 10, Main entry term, French
- principe gyroscopique
1, record 10, French, principe%20gyroscopique
correct, masculine noun
Record 10, Abbreviations, French
Record 10, Synonyms, French
Record 10, Textual support, French
Record number: 10, Textual support number: 1 CONT
Les expériences pratiques avec les gyroscopes constituent un bon moyen d'aider les élèves à comprendre le mouvement de rotation. Demander aux élèves de faire tourner des toupies sur une surface vaste, dure et plane comme le plancher du gymnase. Les élèves doivent faire tourner les toupies et observer ce qui se passe quand ils (elles) les poussent dans certaines directions. Ils peuvent essayer d'appliquer de la force aux toupies placées à différentes hauteurs du sol, afin de voir l'effet que cela produit sur leur mouvement. Tout cela peut être relié aux principes gyroscopiques (comme la précession et inertie gyroscopique), ainsi qu'à leurs applications dans la vie courante (satellites, bicyclettes, etc.). 2, record 10, French, - principe%20gyroscopique
Record 10, Spanish
Record 10, Textual support, Spanish
Record 11 - internal organization data 2001-06-21
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
- two-frame gyroscope
1, record 11, English, two%2Dframe%20gyroscope
correct
Record 11, Abbreviations, English
Record 11, Synonyms, English
- two-frame gyro 1, record 11, English, two%2Dframe%20gyro
correct
- two frame gyroscope 2, record 11, English, two%20frame%20gyroscope
correct
Record 11, Textual support, English
Record number: 11, Textual support number: 1 CONT
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 11, English, - two%2Dframe%20gyroscope
Record 11, Key term(s)
- two framed gyroscope
- two-framed gyroscope
- 2 frame gyro
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
- gyroscope à deux cadres
1, record 11, French, gyroscope%20%C3%A0%20deux%20cadres
proposal, masculine noun
Record 11, Abbreviations, French
Record 11, Synonyms, French
Record 11, Textual support, French
Record number: 11, 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 11, French, - gyroscope%20%C3%A0%20deux%20cadres
Record 11, Key term(s)
- gyroscope 2 cadres
- gyro deux cadres
- gyro 2 cadres
Record 11, Spanish
Record 11, Textual support, Spanish
Record 12 - internal organization data 2001-06-21
Record 12, English
Record 12, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Launching and Space Maneuvering
Record 12, Main entry term, English
- unrestrained three-frame gyroscope
1, record 12, English, unrestrained%20three%2Dframe%20gyroscope
correct
Record 12, Abbreviations, English
Record 12, Synonyms, English
- free three-frame gyroscope 1, record 12, English, free%20three%2Dframe%20gyroscope
correct
Record 12, Textual support, English
Record number: 12, 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 12, English, - unrestrained%20three%2Dframe%20gyroscope
Record number: 12, 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 12, English, - unrestrained%20three%2Dframe%20gyroscope
Record number: 12, Textual support number: 2 OBS
See record "free gyroscope / gyroscope libre." 3, record 12, English, - unrestrained%20three%2Dframe%20gyroscope
Record 12, Key term(s)
- unrestrained three frame gyroscope
- unrestrained three framed gyroscope
- free three frame gyroscope
- free three framed gyroscope
Record 12, French
Record 12, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Pilotage et navigation aérienne
- Instruments de navigation
- Lancement et manœuvres dans l'espace
Record 12, Main entry term, French
- gyroscope libre à trois cadres
1, record 12, French, gyroscope%20libre%20%C3%A0%20trois%20cadres
proposal, masculine noun
Record 12, Abbreviations, French
Record 12, Synonyms, French
Record 12, Textual support, French
Record number: 12, 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 12, French, - gyroscope%20libre%20%C3%A0%20trois%20cadres
Record number: 12, 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 12, French, - gyroscope%20libre%20%C3%A0%20trois%20cadres
Record number: 12, Textual support number: 3 OBS
Voir la fiche «gyroscope libre / free gyroscope». 1, record 12, French, - gyroscope%20libre%20%C3%A0%20trois%20cadres
Record 12, Spanish
Record 12, Textual support, Spanish
Record 13 - internal organization data 1981-01-30
Record 13, English
Record 13, Subject field(s)
- Air Navigation Aids
Record 13, Main entry term, English
- gyroscopic force
1, record 13, English, gyroscopic%20force
correct
Record 13, Abbreviations, English
Record 13, Synonyms, English
Record 13, Textual support, English
Record number: 13, Textual support number: 1 OBS
Attitude and direction. That portion of the system which uses magnetic gyroscopic and inertia forces. 1, record 13, English, - gyroscopic%20force
Record 13, French
Record 13, Domaine(s)
- Aides à la navigation aérienne
Record 13, Main entry term, French
- force gyroscopique 1, record 13, French, force%20gyroscopique
Record 13, Abbreviations, French
Record 13, Synonyms, French
Record 13, Textual support, French
Record number: 13, Textual support number: 1 OBS
Assiette et direction. Partie du système qui utilise les forces magnétiques, gyroscopiques et d'inertie. 1, record 13, French, - force%20gyroscopique
Record 13, Spanish
Record 13, Textual support, Spanish
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