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</p> Signup and view all the answers

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

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

    What happens to frames with errors in a network?

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

    What manages communication in the MAU system?

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

    What is a key benefit of the ADCN network architecture?

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

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