TERMIUM Plus®
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PRECESSIONAL TORQUE [1 record]
Record 1 - internal organization data 2001-09-10
Record 1, English
Record 1, Subject field(s)
- General Mechanics (Physics)
- Aircraft Piloting and Navigation
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 1, Main entry term, English
- precession torque
1, record 1, English, precession%20torque
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- precessional torque 2, record 1, English, precessional%20torque
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The angular velocity of the axis of spin of a spinning rigid body, which arises as a result of external torques acting on the body. 2, record 1, English, - precession%20torque
Record number: 1, Textual support number: 1 CONT
As the gyro case is rotated about the input axis, clockwise or counterclockwise, a precession torque will be developed about the output axis that will cause the inner gimbal to exert torque against the torsion bars. The torsion bars provide a restraining torque proportional to the amount of the inner gimbal's displacement. 1, record 1, English, - precession%20torque
Record 1, French
Record 1, Domaine(s)
- Mécanique générale (Physique)
- Pilotage et navigation aérienne
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 1, Main entry term, French
- couple de précession
1, record 1, French, couple%20de%20pr%C3%A9cession
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, 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 1, French, - couple%20de%20pr%C3%A9cession
Record number: 1, Textual support number: 2 CONT
La plateforme va donc tourner à une vitesse telle que le couple de précession du gyromètre annule le couple appliqué sur son axe de sortie. 3, record 1, French, - couple%20de%20pr%C3%A9cession
Record 1, Spanish
Record 1, Textual support, Spanish
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