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FREE PENDULUM [8 records]
Record 1 - internal organization data 2025-02-28
Record 1, English
Record 1, Subject field(s)
- Clocks, Watches and Bells
Record 1, Main entry term, English
- Riefler clock
1, record 1, English, Riefler%20clock
correct, noun
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A high-precision standard clock having a pin escapement and a partially free mercurial pendulum. 1, record 1, English, - Riefler%20clock
Record 1, French
Record 1, Domaine(s)
- Horlogerie et sonnerie
Record 1, Main entry term, French
- horloge de Riefler
1, record 1, French, horloge%20de%20Riefler
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2001-09-10
Record 2, English
Record 2, Subject field(s)
- Physics
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 2, Main entry term, English
- free pendulum
1, record 2, English, free%20pendulum
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
Gyroscopic pendulum. Free pendulum. The gyro spinning wheel is running at constant speed. The precession drive, which lies in a plane symmetric with respect to the gimbal is not controlled. When the gimbal becomes free, the gravity torque drives it around the horizontal axis, perpendicular to the symmetry plane, until it falls on the top. 1, record 2, English, - free%20pendulum
Record 2, French
Record 2, Domaine(s)
- Physique
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 2, Main entry term, French
- pendule libre
1, record 2, French, pendule%20libre
correct, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
Pendule gyroscopique. Pendule libre. La toupie gyroscopique est entraînée à vitesse constante. Le moteur de précession qui est dans le plan de symétrie du berceau n'est pas commandé. Quant on lâche le berceau, le couple de gravité fait tourner le berceau autour de son axe horizontal perpendiculaire à son plan de symétrie jusqu'à tomber sur la butée. Cette vitesse de rotation induit un couple gyroscopique qui fait basculer la toupie autour de son axe de précession malgré la résistance du réducteur du moteur de précession. 2, record 2, French, - pendule%20libre
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2001-09-10
Record 3, English
Record 3, Subject field(s)
- Flight Instruments and Equipment (Aeroindustry)
- Aircraft Piloting and Navigation
- Navigation Instruments
Record 3, Main entry term, English
- stop
1, record 3, English, stop
correct, noun
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
Gyroscopic pendulum. Free pendulum. The gyro spinning wheel is running at constant speed. The precession drive, which lies in a plane symmetric with respect to the gimbal is not controlled. When the gimbal becomes free, the gravity torque drives it around the horizontal axis, perpendicular to the symmetry plane, until it falls on the stop. 1, record 3, English, - stop
Record 3, French
Record 3, Domaine(s)
- Instruments et équipement de bord (Constructions aéronautiques)
- Pilotage et navigation aérienne
- Instruments de navigation
Record 3, Main entry term, French
- butée
1, record 3, French, but%C3%A9e
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 CONT
Pendule gyroscopique. Pendule libre. Le toupie gyroscopique est entraînée à vitesse constante. Le moteur de précession qui est dans le plan de symétrie du berceau n'est pas commandé. Quand on lâche le berceau, le couple de gravité fait tourner le berceau autour de son axe horizontal perpendiculaire à son plan de symétrie jusqu'à tomber sur la butée. Cette vitesse de rotation induit un couple gyroscopique qui fait basculer la toupie autour de son axe de précession malgré la résistance du réducteur du moteur de précession. 1, record 3, French, - but%C3%A9e
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2001-09-10
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
- gravity torque
1, record 4, English, gravity%20torque
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
- gravity-induced torque 2, record 4, English, gravity%2Dinduced%20torque
correct
Record 4, Textual support, English
Record number: 4, Textual support number: 1 CONT
Gyroscopic pendulum. Free pendulum. The gyro spinning wheel is running at constant speed. The precession drive, which lies in a plane symmetric with respect to the gimbal is not controlled. When the gimbal becomes free, the gravity torque drives it around the horizontal axis, perpendicular to the symmetry plane, until it falls on the top. 1, record 4, English, - gravity%20torque
Record number: 4, Textual support number: 2 CONT
The motion induced in a gyroscope by an applied force follows a simple rule. When the spinning top, for example, is acted upon by a gravity-induced torque, the original rotational motion tries to align itself with the added rotational motion of the torque. The motion, or precession, of the gyroscope that results is perpendicular to the applied torque. In other words, the spin vector tries to align itself with the torque vector; ... 2, record 4, English, - gravity%20torque
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
- couple de gravité
1, record 4, French, couple%20de%20gravit%C3%A9
correct, masculine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 CONT
Pendule gyroscopique. Pendule libre. La toupie gyroscopique est entraînée à vitesse constante. Le moteur de précession qui est dans le plan de symétrie du berceau n'est pas commandé. Quand on lâche le berceau, le couple de gravité fait tourner le berceau autour de son axe horizontal perpendiculaire à son plan de symétrie jusqu'à tomber sur la butée. Cette vitesse de rotation induit un couple gyroscopique qui fait basculer la toupie autour de son axe de précession malgré la résistance du réducteur du moteur de précession. 1, record 4, French, - couple%20de%20gravit%C3%A9
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2001-09-10
Record 5, English
Record 5, Subject field(s)
- Gears and Friction Wheels
- Flight Instruments and Equipment (Aeroindustry)
Record 5, Main entry term, English
- gear of the precession drive
1, record 5, English, gear%20of%20the%20precession%20drive
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 CONT
Gyroscopic pendulum. Free pendulum. The gyro spinning wheel is running at constant speed. The precession drive, which lies in a plane symmetric with respect to the gimbal is not controlled. When the gimbal becomes free, the gravity torque drives it around the horizontal axis, perpendicular to the symmetry plane, until it falls on the top. This rate of rotation of the gimbal creates a gyroscopic torque that makes the spinner rotate around the precession axis in spite of the friction due to the gear of the precession drive. 1, record 5, English, - gear%20of%20the%20precession%20drive
Record 5, Key term(s)
- precession drive gear
Record 5, French
Record 5, Domaine(s)
- Engrenages et roues de friction
- Instruments et équipement de bord (Constructions aéronautiques)
Record 5, Main entry term, French
- réducteur du moteur de précession
1, record 5, French, r%C3%A9ducteur%20du%20moteur%20de%20pr%C3%A9cession
correct, masculine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 CONT
Pendule gyroscopique. Pendule libre. La toupie gyroscopique est entraînée à vitesse constante. Le moteur de précession qui est dans le plan de symétrie du berceau n'est pas commandé. Quand on lâche le berceau, le couple de gravité fait tourner le berceau autour de son axe horizontal perpendiculaire à son plan de symétrie jusqu'à tomber sur la butée. Cette vitesse de rotation induit un couple gyroscopique qui fait basculer la toupie autour de son axe de précession malgré la résistance du réducteur du moteur de précession. 1, record 5, French, - r%C3%A9ducteur%20du%20moteur%20de%20pr%C3%A9cession
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 2001-09-10
Record 6, English
Record 6, Subject field(s)
- General Mechanics (Physics)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 6, Main entry term, English
- precession drive
1, record 6, English, precession%20drive
correct
Record 6, Abbreviations, English
Record 6, Synonyms, English
- precession motor 2, record 6, English, precession%20motor
correct
Record 6, Textual support, English
Record number: 6, Textual support number: 1 CONT
Gyroscopic pendulum. Free pendulum. The gyro spinning wheel is running at constant speed. The precession drive, which lies in a plane symmetric with respect to the gimbal is not controlled. When the gimbal becomes free, the gravity torque drives it around the horizontal axis, perpendicular to the symmetry plane, until it falls on the top. 1, record 6, English, - precession%20drive
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
- moteur de précession
1, record 6, French, moteur%20de%20pr%C3%A9cession
correct, masculine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 CONT
On distingue les gyrodynes 1-axe (une seule vitesse cardan commandée par toupie, en précession) dont le couple moteur est directement transmis au satellite par les bâtis et les gyrodynes 2-axes montés sur un double cardan avec vitesses de précession et nutation commandées. Dans ce cas, l'effet d'amplification de couple --le fait qu'un faible couple autour de l'axe de précession produise un fort couple autour de l'axe perpendiculaire-- est moins important car le moteur de précession autour d'un des axes doit surpasser les couples de précession produits par l'autre. Les études menées au DCSD [Département Commande des Systèmes et Dynamique du Vol] portent principalement sur les «grappes» : ensemble de gyrodynes 1-axe commandés simultanément. 2, record 6, French, - moteur%20de%20pr%C3%A9cession
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 2001-09-06
Record 7, English
Record 7, Subject field(s)
- General Mechanics (Physics)
Record 7, Main entry term, English
- gyroscopic pendulum
1, record 7, English, gyroscopic%20pendulum
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
Record 7, Textual support, English
Record number: 7, Textual support number: 1 CONT
Gyroscopic pendulum. Free pendulum. The gyro spinning wheel is running at constant speed. The precession drive, which lies in a plane symmetric with respect to the gimbal is not controlled. When the gimbal becomes free, the gravity torque drives it around the horizontal axis, perpendicular to the symmetry plane, until it falls on the top. 1, record 7, English, - gyroscopic%20pendulum
Record 7, French
Record 7, Domaine(s)
- Mécanique générale (Physique)
Record 7, Main entry term, French
- pendule gyroscopique
1, record 7, French, pendule%20gyroscopique
correct, masculine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 CONT
Pendule gyroscopique. Pendule libre. La toupie gyroscopique est entraînée à vitesse constante. Le moteur de précession qui est dans le plan de symétrie du berceau n'est pas commandé. Quand on lâche le berceau, le couple de gravité fait tourner le berceau autour de son axe horizontal perpendiculaire à son plan de symétrie jusqu'à tomber sur la butée. Cette vitesse de rotation induit un couple gyroscopique qui fait basculer la toupie autour de son axe de précession malgré la résistance du réducteur du moteur de précession. 1, record 7, French, - pendule%20gyroscopique
Record 7, Spanish
Record 7, Textual support, Spanish
Record 8 - internal organization data 1977-01-14
Record 8, English
Record 8, Subject field(s)
- Geophysics
- Vulcanology and Seismology
Record 8, Main entry term, English
- horizontal seismometer
1, record 8, English, horizontal%20seismometer
correct
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 OBS
(A horizontal seismometer) consists of a pendulum free to rotate about an axis which is slightly inclined to the vertical. 1, record 8, English, - horizontal%20seismometer
Record 8, French
Record 8, Domaine(s)
- Géophysique
- Volcanologie et sismologie
Record 8, Main entry term, French
- séismographe horizontal
1, record 8, French, s%C3%A9ismographe%20horizontal
correct
Record 8, Abbreviations, French
Record 8, Synonyms, French
Record 8, Textual support, French
Record number: 8, Textual support number: 1 OBS
(...) la masse est solidaire du bâti selon un axe vertical mais restant libre pour des mouvements horizontaux perpendiculaires au plan de la figure. 1, record 8, French, - s%C3%A9ismographe%20horizontal
Record 8, Spanish
Record 8, Textual support, Spanish
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