A330 -200 rudder

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Questions and Answers

What is the primary function of the Backup Yaw Damper Unit (BYDU)?

  • To activate during a total loss of electrical power for yaw damping only (correct)
  • To replace the green hydraulic servo-actuator in case of failure
  • To synchronize with the yellow servo-actuator for enhanced control
  • To provide feedback to the rudder pedals during normal operations

Which components provide independent electric supply to the BYDU?

  • Two identical generators driven by the same hydraulic system
  • One generator driven by the blue hydraulic system and another by the yellow hydraulic system (correct)
  • A single generator powered by the green hydraulic system
  • Multiple battery systems that are charged by the main generators

What happens in the case of a total loss of flight control computers?

  • The Backup Yaw Damper Unit (BYDU) activates for yaw damping (correct)
  • The hydraulic servojacks remain operational without feedback
  • The yellow servo-actuator takes full control
  • The yaw damping function is completely disabled

What does the yaw damping and turn coordination function lack?

<p>Feedback to the rudder pedals (A)</p> Signup and view all the answers

What mechanism is used to achieve rudder trim?

<p>2 Electric motors (A)</p> Signup and view all the answers

Which components operate normally in the rudder trim system?

<p>SEC 1/MOTOR 1 and SEC 2/MOTOR 2 (C)</p> Signup and view all the answers

What happens to MOTOR 2 during a routine operation?

<p>It synchronizes with MOTOR 1 as a backup (C)</p> Signup and view all the answers

During autopilot operation, what does the FMGEC compute for rudder?

<p>rudder trim orders. (A)</p> Signup and view all the answers

In what operational state does the FMGEC compute rudder trim orders?

<p>When the autopilot is engaged. (B)</p> Signup and view all the answers

What does the engagement of autopilot allow the FMGEC to calculate?

<p>Rudder trim orders. (B)</p> Signup and view all the answers

Flashcards

Yaw Damping Function

A system that stabilizes the aircraft's yaw (rotation around its vertical axis) during flight.

Backup Yaw Damper Unit (BYDU)

A backup system for yaw damping in case of primary system failure or loss of power.

Hydraulic Servo-actuators

Devices that use hydraulic pressure to power the yaw damping and turn coordination functions.

Turn Coordination

A system that assists pilots in maintaining coordinated turns during flight, preventing unwanted yaw.

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Independent Electric Power for BYDU

BYDU relies on separate electrical generators, ensuring continuous power supply in case of hydraulic system failures.

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Rudder Trim

A system that adjusts the rudder position to maintain a desired flight attitude without constant pilot input.

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Artificial Feel Unit

A device that simulates the feel of the rudder pedals, providing feedback to the pilot.

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SEC 1/MOTOR 1

The primary motor that controls the artificial feel unit for rudder trim.

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SEC 2/MOTOR 2

The backup motor that controls the artificial feel unit for rudder trim.

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Synchronized Backup

SEC 2/MOTOR 2 works in sync with SEC 1/MOTOR 1, ensuring continuous rudder trim operation.

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Rudder Trim Orders

Instructions calculated by the FMGEC (Flight Management and Guidance Electronic Computer) to adjust the rudder position for maintaining a desired flight attitude.

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FMGEC

A computer system that controls the autopilot and helps guide the aircraft during flight.

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Autopilot Engaged

The autopilot system is activated and taking control of the aircraft's flight parameters, including rudder trim.

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Flight Attitude

The aircraft's position and orientation in the air, including pitch, roll, and yaw.

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Study Notes

Yaw Damping and Turn Coordination

  • Three hydraulic servojacks are controlled by a green hydraulic servo-actuator.
  • A yellow servo-actuator acts as a backup, maintaining synchronization and taking over if the green one fails.
  • Rudder pedals have no feedback from yaw damping and turn coordination systems.
  • Backup Yaw Damper Unit (BYDU) is activated if there's a complete loss of electrical power or flight control computers, handling only yaw damping.
  • BYDU uses an electro-mechanical actuator, working alongside the two standard yaw dampers.
  • The BYDU includes a gyrometer and associated electronics.
  • Two dedicated generators power the BYDU: one powered by the blue hydraulic system, the other by the yellow system.

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