Gulfstream G650ER Horizontal Stabilizer System Description Quiz

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Questions and Answers

What are the two independent dual channel position resolvers used for in the Horizontal Stabilizer System?

The two independent dual channel position resolvers provide feedback to the Horizontal Stabilizer Control Unit (HSCU) on the position of the Horizontal Stabilizer Trim Actuator (HSTA).

Where are the two horizontal stabilizer position resolvers located on the aircraft?

The two horizontal stabilizer position resolvers are located on the HSTA. One resolver is mounted at the ballscrew (primary load path) and provides feedback to channel 2 of the HSCU, while the other is mounted to the secondary load path and provides feedback to channel 1 of the HSCU.

What are the two HSCU channels and what do they receive data from?

Channel 1 of the HSCU receives data from a resolver geared to the secondary load path, while channel 2 receives data from a resolver geared to the primary load path.

What is the purpose of the horizontal stabilizer position resolvers in the Horizontal Stabilizer System?

The purpose of the horizontal stabilizer position resolvers is to provide feedback to the Horizontal Stabilizer Control Unit (HSCU) on the position of the Horizontal Stabilizer Trim Actuator (HSTA). Signup and view all the answers

Describe the relationship between the HSCU channels and the resolvers in the Horizontal Stabilizer System.

Channel 1 of the HSCU receives data from a resolver geared to the secondary load path, while channel 2 receives data from a resolver geared to the primary load path. The resolvers are independent, dual channel, brushless resolvers that provide HSTA position feedback to the corresponding HSCU channels. Signup and view all the answers

What is the purpose of the circuit breakers listed in the table?

The circuit breakers listed are used to protect the system by providing power to the different components. Signup and view all the answers

What is the significance of the Stabilizer Rigging Complete message?

The Stabilizer Rigging Complete message indicates that the rigging of the horizontal stabilizer is valid for the current aircraft and no further action is required. Signup and view all the answers

What is the purpose of the Stabilizer Maintenance Required message?

The Stabilizer Maintenance Required message indicates that the HSCU has flagged a maintenance item, but the system redundancy has not been lost. Signup and view all the answers

What is the recommended action when the Stabilizer Failed message is displayed?

If the flight control system is in normal mode, the PITCH trim switch on the control wheel can be used to adjust the elevator trim position. Signup and view all the answers

What is the significance of the Stabilizer Channel Fail message?

The Stabilizer Channel Fail message indicates that a horizontal stabilizer control channel has failed, and maintenance should be notified for corrective action. The PITCH trim switch on the control wheel will be inoperative, and the backup PITCH trim switch on the trim control module should be used. Signup and view all the answers

Study Notes

Horizontal Stabilizer System Components

Two independent dual channel position resolvers are utilized for precise position feedback of the horizontal stabilizer.
The horizontal stabilizer position resolvers are typically located at the moving surfaces of the stabilizer on the aircraft.

HSCU Channels

Two HSCU (Horizontal Stabilizer Control Unit) channels process signals from the position resolvers, ensuring redundancy and reliability.
Each HSCU channel receives data from the horizontal stabilizer position resolvers to maintain accurate control.

Purpose of Position Resolvers

The horizontal stabilizer position resolvers provide critical information regarding the stabilizer's position, enhancing flight stability and control.

Relationship Between HSCU Channels and Resolvers

HSCU channels interact with the position resolvers to interpret stabilizer positioning data, enabling coordinated movement and response during flight operations.

Circuit Breakers

Circuit breakers in the system safeguard against electrical faults and ensure safe operation of the horizontal stabilizer by interrupting power if necessary.

Stabilizer Rigging Complete Message

The Stabilizer Rigging Complete message indicates that the horizontal stabilizer is correctly aligned and configured for flight, ensuring optimal aerodynamic performance.

Stabilizer Maintenance Required Message

The Stabilizer Maintenance Required message signals that maintenance needs to be performed on the stabilizer system, prompting preventive action to maintain safety.

Recommended Action for Stabilizer Failed Message

When the Stabilizer Failed message appears, immediate inspection and troubleshooting are recommended to diagnose and rectify stabilizer system issues.

Significance of Stabilizer Channel Fail Message

The Stabilizer Channel Fail message alerts the crew to potential issues with one of the HSCU channels, indicating a need for evaluation of the dual channel redundancy and overall system integrity.

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Description

Test your knowledge on the description and functioning of the horizontal stabilizer system sensors in the Gulfstream G650ER aircraft. Learn about the feedback provided to the Horizontal Stabilizer Control Unit (HSCU) and the position data for the Horizontal Stabilizer Trim Actuator (HSTA).