Aircraft Systems Components
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Questions and Answers

What is the primary difference between a CAN bus and an ASCB?

  • The number of nodes on the network
  • The communication protocol used
  • The wire and harness construction (correct)
  • The type of data transmitted

What happens when a CAN node wants to transmit data?

  • It requests permission from the master node
  • It waits for a specific time slot to transmit
  • It checks if the bus is busy and then transmits (correct)
  • It sends a request to the other nodes on the network

What is the purpose of the arbitration ID in a CAN frame?

  • To identify the receiving node
  • To specify the priority of the message
  • To label the frame with a unique identifier (correct)
  • To identify the transmitting node

What happens when multiple nodes try to transmit at the same time?

<p>The node with the highest priority gets bus access (A)</p> Signup and view all the answers

What is included in the CAN specification to ensure data integrity?

<p>A method of error checking (A)</p> Signup and view all the answers

What is the role of the master node in a CAN bus?

<p>There is no master node in a CAN bus (B)</p> Signup and view all the answers

What happens to frames with errors in a network?

<p>They are disregarded by all nodes (C)</p> Signup and view all the answers

What is the purpose of the Actuator Input-Output Processor (AIOP) modules?

<p>To perform computations and data processing for autopilot and Yaw Damper functions (C)</p> Signup and view all the answers

What happens if too many errors are detected in a network?

<p>Individual nodes can stop transmitting errors or disconnect themselves (C)</p> Signup and view all the answers

What is the function of the Flight Guidance Control System (FGCS) application?

<p>To drive the autopilot control systems (A)</p> Signup and view all the answers

What is the role of the clutched electro-mechanical servo assemblies in the aircraft system?

<p>To operate in parallel with the normal pilot commands when engaged (B)</p> Signup and view all the answers

What type of modules are the Actuator Input-Output Processors (AIOPs) within the Module Avionics Unit (MAU)?

<p>Line Replaceable Modules (LRMs) (C)</p> Signup and view all the answers

What is the primary function of the Power Supply in the MAU system?

<p>To translate aircraft power to backplane conditioned power (C)</p> Signup and view all the answers

What type of processing system is used by the User Modules to perform various aircraft control and monitoring functions?

<p>Digital Engine Operating System (DEOS) compliant (B)</p> Signup and view all the answers

What is the primary function of the Network Interface Controller (NIC) in the MAU system?

<p>To supply the interface between the internal backplane bus and external bus systems (C)</p> Signup and view all the answers

What type of I/O is used by the User Modules to interact with aircraft sensors and systems?

<p>Both custom and generic I/O (C)</p> Signup and view all the answers

What is the primary function of the User Modules in the MAU system?

<p>To perform various aircraft control and monitoring functions (D)</p> Signup and view all the answers

What manages communication in the MAU system?

<p>The Network Interface Controller (NIC) (D)</p> Signup and view all the answers

What is a key benefit of the ADCN network architecture?

<p>Increased system reliability through redundancy (D)</p> Signup and view all the answers

What happens when a subscriber in an ADCN network receives two identical data frames?

<p>It rejects one of the frames and processes the other (C)</p> Signup and view all the answers

What is the primary function of the auto-switching system in an ADCN network?

<p>To automatically switch to the backup network in case of a failure (B)</p> Signup and view all the answers

Why do subscribers in an ADCN network transmit the same information frame on both networks A and B?

<p>To provide redundant data transmission (C)</p> Signup and view all the answers

What is the purpose of having two networks (A and B) in an ADCN architecture?

<p>To provide redundancy and ensure a data path is always available (C)</p> Signup and view all the answers

What is the primary function of the AIOP modules?

<p>To collect data from avionic and flight control systems via ASCB or FGCS inputs (B)</p> Signup and view all the answers

How do the AIOP modules send position data to the servos?

<p>Through a bidirectional CAN data bus (B)</p> Signup and view all the answers

What is the purpose of the LVDTs in the autopilot system?

<p>To provide analogue feedback to the Primary Actuator Control Electronics (P-ACE) System (C)</p> Signup and view all the answers

What is required for the servos in a channel to be active and engaged?

<p>Both AIOP modules in lane A and lane B operating simultaneously (B)</p> Signup and view all the answers

What is the role of the P-ACE system in the autopilot feedback loop?

<p>To perform analogue-to-digital conversion and send digital feedback data to the FCM (C)</p> Signup and view all the answers

What type of signals does the FGCS provide to the FCMs?

<p>Yaw damper and turn coordination signals (D)</p> Signup and view all the answers

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