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GYRO SPIN UP [3 records]

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Alphabetical list of terms

Record 1 2002-08-26

English

Subject field(s)
  • Flight Instruments and Equipment (Aeroindustry)
  • Aircraft Piloting and Navigation
  • Navigation Instruments
CONT

During both phases, 20 Volts line to neutral, 3 phase AC is applied through relays 1K1 and 1K2 to the VG [vertical gyro] and DG [directional gyro] spin motors to bring the gyros up to usable speed quickly. Excitation is reduced to 14 Volts line to neutral when the radid alignment cycle is complete.

French

Domaine(s)
  • Instruments et équipement de bord (Constructions aéronautiques)
  • Pilotage et navigation aérienne
  • Instruments de navigation
CONT

Durant les deux phases, un courant alternatif triphasé de 20 volts (ligne-neutre) est envoyé, en passant par les relais 1K1 et 1K2, au moteur couple du gyroscope de verticale et du directionnel pour les entraîner rapidement à leur vitesse opérationnelle. L'excitation est réduite à 14 volts (ligne-neutre) lorsque le cycle d'alignement rapide est complété.

Spanish

Save record 1

Record 2 2001-08-13

English

Subject field(s)
  • General Scientific and Technical Vocabulary
  • Aircraft Piloting and Navigation
  • Navigation Instruments
  • Flight Instruments and Equipment (Aeroindustry)
CONT

During both phases, 20 Volts line to neutral, 3 phase AC is applied through relays 1K1 and 1K2 to the VG [vertical gyro] and DG [directional gyro] spin motors to bring the gyros up to usable speed quickly.

OBS

operational speed: term officialized by the Aeronautical Terminology Standardization Committee (ATSC) - Helicopters.

French

Domaine(s)
  • Vocabulaire technique et scientifique général
  • Pilotage et navigation aérienne
  • Instruments de navigation
  • Instruments et équipement de bord (Constructions aéronautiques)
CONT

Durant les deux phases, un courant alternatif triphasé de 20 volts (ligne-neutre) est envoyé, en passant par les relais 1K1 et 1K2, au moteur couple du gyroscope de verticale et du directionnel pour les entraîner rapidement à leur vitesse opérationnelle.

CONT

Le système de détection avant par rayons infrarouges (FLIR) du F- 18 [...] Le fait d'enlever le contacteur FLIR de sa position Désactivé (OFF) fait tourner les gyroscopes du système à leur vitesse opérationnelle; le FLIR n'enverra aucune image tant que ceux-ci ne seront pas à la bonne vitesse, processus qui prendra environ cinq secondes.

OBS

vitesse opérationnelle; régime opérationnel : termes uniformisés par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Hélicoptères.

PHR

Faire tourner les gyroscopes à leur vitesse opérationnelle.

Spanish

Save record 2

Record 3 2001-06-21

English

Subject field(s)
  • General Mechanics (Physics)
  • Aircraft Piloting and Navigation
  • Navigation Instruments
  • Flight Instruments and Equipment (Aeroindustry)
CONT

... special gyro configurations can be devised by using slow spin velocity for which sizable circular motions are easily induced and observed. When they are superimposed on steady precession(due to unbalance) the result is a nodding up an down of the axle as it precesses about the vertical, which has led to the term nutation.

CONT

The gyro in the artificial horizon can be set in motion and kept in constant motion (steady precession) by using either electricity to power a spinning motor or by using air with a vacuum to suck air out of the casing and vary this air in and out to keep the wheel turning constantly.

OBS

The three elementary movements of a gyroscope: ...1. Rotation--the top is spinning rapidly about its vertical axis. 2. Precession--as it slows down, the top cants over and its axis follows a conical path. 3. Nutation--as the top spins more slowly still, the axis oscillates in a sinusoidal path.

PHR

To keep in steady precession.

French

Domaine(s)
  • Mécanique générale (Physique)
  • Pilotage et navigation aérienne
  • Instruments de navigation
  • Instruments et équipement de bord (Constructions aéronautiques)
CONT

Mouvement de précession stable d'un gyroscope.

PHR

Être en état de précession stable.

Spanish

Save record 3

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