TERMIUM Plus®

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ATTITUDE CORRECTION SYSTEM [5 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2023-02-01

English

Subject field(s)
  • Spacecraft
CONT

GOES-9, a three axis stabilized spacecraft, remains stationary in space which allows the [imager and sounder] instruments to be continuously pointed at the earth. The scanning system moves back and forth(i. e., east to west and then west to east) as it moves north to south. While the spacecraft is stationary, it is not absolutely still. Earth location and registration accuracy are [affected] by orbital motions, instrument motion, and thermal distortion. A complicated set of navigation(earth location) and registration(image-to-image location of a landmark) correction schemes are necessary to compensate for these effects.... The registration schemes briefly are : 1) image motion compensation(IMC) and 2) mirror motion compensation(MMC). The IMC removes spacecraft orbit and attitude motion from each image. The MMC automatically corrects for the predictable effects of the instrument mirror motions.

French

Domaine(s)
  • Engins spatiaux

Spanish

Campo(s) temático(s)
  • Naves espaciales
Save record 1

Record 2 2001-06-21

English

Subject field(s)
  • Stators and Rotors (Electrical Components)
  • Aircraft Piloting and Navigation
  • Navigation Instruments
  • Flight Instruments and Equipment (Aeroindustry)
CONT

floated gyroscope... Because of the requirement that the allowable rotation angle be small (on the order of an arc-second), an electrical torquer is used to maintain the float fixed relative to the case; it is the current to the torquer that is used as the measure of angular rotation of the gyro and hence of the vehicle to which it is attached.

CONT

Attitude gyros, technically called vertical gyros because of the orientation of their spin axis, do precess, but correction is applied automatically. All attitude gyros have an automatic erection system that drives the gyro back to vertical when it precesses. The erection system detects gravity by means of a pendulous sensor that in turn opens air blast vanes on an air-driven gyro or powers electric torquer motors to drive the gyro back to vertical when it precesses.

Key term(s)
  • electric torque producing device

French

Domaine(s)
  • Stators et rotors (Composants électrotechniques)
  • Pilotage et navigation aérienne
  • Instruments de navigation
  • Instruments et équipement de bord (Constructions aéronautiques)
OBS

Générateur de couple / torquer.

Spanish

Save record 2

Record 3 2001-05-22

English

Subject field(s)
  • Launching and Space Maneuvering
DEF

The pre-arranged meeting (and usu. docking) of two or more spacecraft in space.

CONT

The final phase of rendezvous operations begins about three hours prior to Atlantis’ docking with the ISS [International Space Station]. Atlantis will approach the ISS from below, in what is referred to as a plus-R bar approach, to minimize the effects of jet thruster firings on the station and its solar arrays. About 40 minutes before the terminal initiation burn(Ti burn) when Atlantis moves within 135, 000 feet of the station, the shuttle's rendezvous radar system is activated to provide supplemental navigation information. Prior to initiating the Ti burn, the crew will power on the ODS [Orbital Docking System] and activate Atlantis's docking lights. A series of course correction burns will bring Atlantis to a point almost directly below and behind the station, at which point Commander Ken Cockrell initiates the manual portion of his approach to the ISS. Atlantis will intercept the R-bar about 700 feet below the station. Cockrell will slowly move Atlantis to a point about 600 feet below the station before performing a 180 degree yaw maneuver to position Atlantis in a "tail forward" attitude for the final approach and docking.

OBS

rendezvous: term officially approved by the International Space Station official approval Group (ISSOAG).

PHR

Rendezvous burn, flight.

PHR

Phase of rendezvous.

French

Domaine(s)
  • Lancement et manœuvres dans l'espace
DEF

Opération par laquelle un véhicule spatial en rejoint un autre en orbite autour de la Terre ou d'un autre corps céleste.

OBS

rendez-vous; rendez-vous spatial : termes uniformisés par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

PHR

Rendez-vous entièrement automatique.

Spanish

Save record 3

Record 4 1983-02-09

English

Subject field(s)
  • Aircraft Piloting and Navigation
OBS

Speed-attitude correction. That portion of the system that automatically maintains a safe flight attitude by correcting for effects of speed, such as mach trim and speed stability.

French

Domaine(s)
  • Pilotage et navigation aérienne
OBS

Correction vitesse assiette. Partie du système servant à maintenir automatiquement en vol une assiette de sécurité en corrigeant les effets de la vitesse: compensation de Mach, stabilisation de vitesse, par exemple.

Spanish

Save record 4

Record 5 1981-01-30

English

Subject field(s)
  • Aircraft Piloting and Navigation
OBS

Speed-attitude correction. That portion of the system that automatically maintains a safe flight attitude by correcting for effects of speed, such as mach trim and speed stability.

French

Domaine(s)
  • Pilotage et navigation aérienne
OBS

Correction vitesse assiette. Partie du système servant à maintenir automatiquement en vol une assiette de sécurité en corrigeant les effets de la vitesse: compensation de Mach, stabilisation de vitesse, par exemple.

Spanish

Save record 5

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