Electronic & Digital Aircraft Systems II Quiz
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What was the first commercial aircraft to utilize a digital federated architecture?

  • Airbus A320
  • Boeing 747
  • Boeing 757 (correct)
  • Boeing 777

    • What year did the industry recognize the need for the ability to transfer data files instead of individual data "words" across ARINC 429?

  • 1987 (correct)
  • 1992
  • 1985
  • 1990

    • What was the main reason for the shift from a federated avionics architecture to an Integrated Modular Architecture (IMA)?

  • Reduced weight and cost
  • Improved reliability and safety
  • Increased flexibility and scalability
  • All of the above (correct)

    • Which of these major functions transitioned from independent LRUs to IMA?

    <p>Flight Management (C)</p> Signup and view all the answers

    What is the primary limitation of traditional federated avionic systems?

    <p>All of the above (D)</p> Signup and view all the answers

    What is the maximum bit rate of traditional ARINC 429 federated architecture?

    <p>100 Kbps (D)</p> Signup and view all the answers

    What is the primary advantage of ethernet-based data communication in IMA?

    <p>All of the above (D)</p> Signup and view all the answers

    What is the primary advantage of a switched ethernet over a classic ethernet in aircraft systems?

    <p>Switched ethernet eliminates delays caused by data bus contention. (C)</p> Signup and view all the answers

    Which of the following is a key characteristic of the Avionics Data Communication Network (ADCN)?

    <p>It consists of two redundant networks for increased reliability. (D)</p> Signup and view all the answers

    What type of network architecture is used in Integrated Modular Avionics (IMA)?

    <p>Virtual backplane (A)</p> Signup and view all the answers

    Which of the following is NOT a benefit of Integrated Modular Avionics (IMA)?

    <p>Increased cost (B)</p> Signup and view all the answers

    What does LRU stand for in the aviation context?

    <p>Line Replaceable Unit (B)</p> Signup and view all the answers

    How do AFDX switches contribute to the robustness of the IMA network?

    <p>They allow for dynamic reconfiguration in the event of failures. (A)</p> Signup and view all the answers

    What is the primary advantage of using a "virtual backplane" in IMA?

    <p>It allows for software-defined network configurations. (C)</p> Signup and view all the answers

    What communication systems are used to distribute passenger address announcements?

    <p>Passenger Address (PA) (C)</p> Signup and view all the answers

    What is the purpose of the cabin interphone system?

    <p>Communication between cabin crew stations and the cockpit (A)</p> Signup and view all the answers

    Which of the following is an example of a "module" used in IMA?

    <p>GPM (A)</p> Signup and view all the answers

    What is the primary function of an AFDX switch?

    <p>To manage the routing of data packets within an IMA network. (B)</p> Signup and view all the answers

    Which communication system allows ground maintenance crew to communicate with cockpit and cabin crew?

    <p>Service Interphone (D)</p> Signup and view all the answers

    What happens when two PA announcements with different priority levels are initiated simultaneously?

    <p>The announcement with the lower priority is muted. (B)</p> Signup and view all the answers

    What is the primary function of the cabin monitoring system?

    <p>Monitoring the status of various cabin systems (B)</p> Signup and view all the answers

    What is the primary purpose of the Cabin Intercommunication Data System (CIDS) or Cabin Service System Controller (CSSC)?

    <p>To operate, control, monitor, and transmit data related to passengers and cabin crew. (D)</p> Signup and view all the answers

    What are the components of the Cabin Core System?

    <p>Cabin Intercommunication Data System (CIDS), Cabin Service System Controller (CSSC), In-Flight Entertainment System (IFE) (D)</p> Signup and view all the answers

    Which of the following is NOT a function of the CIDS/CSSC?

    <p>Management of aircraft navigation and communication systems. (A)</p> Signup and view all the answers

    What are the key components of the Airbus Cabin Intercommunication Data System (CIDS)?

    <p>CIDS directors, Flight Attendant Panels (FAPs), and mini FAPs. (A)</p> Signup and view all the answers

    How are the mini FAPs connected in the CIDS system?

    <p>Directly to the Flight Attendant Panels (FAPs). (A)</p> Signup and view all the answers

    What is the purpose of the Flight Attendant Panels (FAPs)?

    <p>To allow the cabin crew to monitor and control various cabin systems. (C)</p> Signup and view all the answers

    Which system provides the cabin crew with an interface to the Cabin Core System and the Cabin Monitoring System?

    <p>Cabin System (C)</p> Signup and view all the answers

    Which of the following is NOT a subsystem within the Cabin System?

    <p>Aircraft Navigation System (C)</p> Signup and view all the answers

    What is the primary purpose of the Cabin Monitoring System within the Cabin System?

    <p>To monitor and manage various cabin environment parameters. (B)</p> Signup and view all the answers

    Which of the following is an example of a BITE test that may be performed on the Cabin Core System?

    <p>Checking the cabin pressure sensors for accuracy. (B)</p> Signup and view all the answers

    What is the primary method for updating the software of cabin system components?

    <p>Using the Flight Attendant Panel menu (A)</p> Signup and view all the answers

    Which aspect of the CIDS architecture is responsible for managing and controlling the system?

    <p>CIDS directors (B)</p> Signup and view all the answers

    How many predefined cabin layouts are available through the Flight Attendant Panel menu?

    <p>Three (C)</p> Signup and view all the answers

    What type of access code is required to modify cabin layouts?

    <p>Operator-specific code (B)</p> Signup and view all the answers

    What is the primary purpose of the loudspeaker level adjustment function?

    <p>To enhance the clarity of passenger communication (A)</p> Signup and view all the answers

    What is the main function of the Flight Attendant Panel set-up page?

    <p>Adjusting internal settings like screen brightness and panel volume (C)</p> Signup and view all the answers

    What is the basis of the CIDS architecture?

    <p>A controller, bus lines, and network concept (B)</p> Signup and view all the answers

    Which of these functions is NOT performed or controlled by the Flight Attendant Panels (FAPs)?

    <p>Aircraft landing gear deployment (B)</p> Signup and view all the answers

    How many modifiable cabin layouts can be configured through the Flight Attendant Panel menu?

    <p>Three (A)</p> Signup and view all the answers

    What is the main advantage of the modular design of the CIDS system?

    <p>Reduced maintenance costs due to replaceable components (B)</p> Signup and view all the answers

    Flashcards

    Classic Ethernet Shortcoming

    Classic Ethernet has long wait times before data transmission due to bus silence.

    Switched Ethernet

    Switched Ethernet uses routers/switches to direct and buffer data traffic, minimizing delays.

    AFDX Switch

    Avionics Full Duplex Switched Ethernet (AFDX) switch improves data transmission in avionics.

    Avionics Data Communication Network (ADCN)

    ADCN consists of two redundant networks, A and B, enhancing reliability in avionics.

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    Integrated Modular Avionics (IMA)

    IMA integrates subsystems on a common platform, reducing weight, size, and cost.

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    Weight Savings in IMA

    IMA reduces Boeing 787's avionics weight by 2000 lbs by using fewer components.

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    Aircraft Data Network (ADN)

    ADN connects all modules in IMA, routing information through AFDX switches.

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    Line Replaceable Modules (LRMs)

    LRMs are components that receive routed information in the IMA structure.

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    Virtual Backplane

    IMA replaces point-to-point cabling with a virtual backplane for data communication.

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    Cabin Monitoring System

    A system that manages communication between cabin crew and passengers, including announcements and interphone systems.

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    Passenger Address (PA)

    A system that distributes announcements from the cockpit or attendants to all cabin loudspeakers and headsets, prioritizing higher sources.

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    Cabin Interphone

    A communication system for cabin crew to talk among themselves and with the cockpit, allowing multiple simultaneous connections.

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    Service Interphone

    A system enabling conversations between ground maintenance, cockpit, and cabin crew through specialized jacks and handsets.

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    Communication Functions

    The roles of systems like PA, cabin interphone, and service interphone in facilitating communication within the aircraft.

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    BITE Testing

    A methodology for testing Integrated Modular Avionics systems.

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    Cabin System

    Interface for cabin crew and passengers to monitor and control features.

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    Cabin Core System

    Subsystem that controls communication and service systems in the cabin.

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    Cabin Intercommunication Data System (CIDS)

    Airbus system for managing cabin operations and services.

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    Cabin Service System Controller (CSSC)

    Boeing's system for cabin operations similar to CIDS.

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    CIDS Directors

    Main controllers within the CIDS for managing data and system operations.

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    Flight Attendant Panels (FAPs)

    Touchscreen interfaces for flight attendants to interact with cabin systems.

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    Mini FAPs

    Smaller touchscreen panels connected to main FAPs for cabin crew.

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    In-Flight Entertainment System (IFE)

    Subsystem that provides entertainment options to passengers.

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    BITE testing capabilities

    Built-In Test Equipment (BITE) allows for diagnostic self-checks of aircraft systems to ensure proper functionality.

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    Federated architecture

    A traditional system setup where subsystems operate independently on separate hardware.

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    ARINC 429

    A standard for data exchange in avionics systems, using a simple one-way data transfer format.

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    Ethernet-based communication

    A network approach allowing multiple devices to communicate over a shared bus at higher bit rates.

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    AIMS Cabinet

    Airplane Information Management System's cabinet that serves as a core component in IMA architecture.

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    Bit rate

    The speed of data transmission over a network, measured in bits per second.

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    CIDS

    Cabin Intercommunication Data System, used for cabin operations.

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    Software Loading

    Updating software of cabin system components via the Flight Attendant Panel.

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    Layout Selection

    Choice between predefined and modifiable cabin layouts through the FAP.

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    Cabin Programming

    Configuring cabin system functions related to different zones.

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    Loudspeakers Level Adjustment

    Manual adjustment of cabin loudspeaker output for announcements.

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    CIDS Architecture

    Modular design of CIDS adapted to cabin layout and functions.

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    Access Code Protection

    Security measure for accessing sensitive functions in the Flight Attendant Panel.

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    Internal Settings Control

    Settings for loudspeaker volume and screen brightness via the FAP.

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    Study Notes

    Typical Electronic/Digital Aircraft Systems II (5.15)

    • Learning objectives include describing the general arrangement and BITE testing capabilities of Integrated Modular Avionics (IMA), Cabin Systems, and Information Systems at Level 2.

    Integrated Modular Avionics (IMA) Background

    • Boeing 767 and 757 were the first commercial aircraft to use a digital federated architecture.
    • In 1987, the industry recognised the need to transfer data files as opposed to individual data words.
    • Beginning with the Boeing 777, integrated modular architectures were adopted with the Airplane Information Management System (AIMS) cabinet.
    • This approach integrated previously separate components like flight management, communications management, and aircraft condition monitoring into a unified system.

    IMA Advantages

    • Traditional avionics systems are based on federated systems.
    • Subsystems exist on separate hardware; expansion is complex.
    • Additional LRUs necessitate additional connections increasing hardware complexity.
    • Bit rates are limited to approximately 100Kbps in one direction.

    Classic ARINC 629 Ethernet - Improved Bit Rate

    • The classic Ethernet approach requires a direct connection of each unit to the common bus.
    • Bit rates are improved to 10 Mbps.
    • A shortcoming of the classic Ethernet is that large systems have long wait times for the bus to fall silent.

    AFDX Switched Ethernet

    • Integrated Modular Avionics (IMA) uses a common platform, sharing resources like memory and processors, and enhancing usage of resources.
    • Reduced weight, size, power, and cost are some advantages over prior systems.

    Cabin Systems Overview

    • The cabin system provides an interface for cabin crew to the cabin core and cabin monitoring system.
    • Passengers use the entertainment system.
    • Three subsystems comprise the cabin system: cabin core, monitoring, and in-flight entertainment (IFE).

    Cabin Core System

    • Manufacturers have differing systems, Airbus uses a Cabin Intercommunication Data System (CIDS), and Boeing uses a Cabin Service System Controller (CSSC).
    • CIDS/CSSC manages, controls, monitors, and transmits data between cabin systems, passengers, and crew.
    • It enables testing different systems and units.
    • The Airbus CIDS system uses two central CIDS directors, touch-screen Flight Attendant Panels (FAPs), and mini-FAPs.
    • FAPs and mini-FAPs connect to CIDS directors, which connect to systems related to passengers and crew.

    Basic CIDS Operations

    • Software loading updates cabin system components' software through the Flight Attendant Panel (FAP).
    • Three pre-defined and three customisable cabin layouts are accessible through the FAP.
    • Layout selection is protected by an access code, only accessible on the ground.
    • Cabin programming allows modifying zone configurations (via FAP).
    • Loudspeaker level adjustment allows for manual adjustment of cabin loudspeaker settings via the MP FAP menu page, which is protected by an access code.

    CIDS Architecture

    • CIDS is modular, meaning component count adapts to cabin layout needs.
    • Director (controllers) support bus lines and network concepts.

    Multi-Purpose Flight Attendant Panels (MP FAP)

    • Touchscreen interfaces between cabin attendants and CIDS directors; the Boeing equivalent is the Crew Attendant Panel (CAP).

    Additional Indication Panels (AIPs)

    • Displays dial and call information from Passenger Address (PA) or the interphone.
    • Additional cabin information, e.g., lavatory smoke location, is also displayed on the indicator panel.

    Additional Attendant Panels (AAPs)

    • Allows attendants to control specific cabin support systems and passenger-related functions in a defined cabin zone.

    Cabin Monitoring System: Communication Functions

    • Passenger Address (PA) distributes announcements to all assigned cabin speakers and passenger headsets.

    • Higher priority sources interrupt lower priority announcements. Only the higher-priority message is heard.

    • Cabin interphone connects cabin crew stations and cockpit to the cabin crew stations.

    • Service interphone connects ground maintenance crews, cockpit, and cabin crew.

    In-Flight Entertainment (IFE) System

    • Provides passengers with audio, video, data, and interactive functions (games, etc.) through a cabin distribution network.

    Information Systems (Aircraft Information Systems)

    • Aims to improve flight, cabin, and maintenance operations.
    • Networked "real-time" servers and secure digital communications are involved.
    • Data is gathered, centralised, and used to support multiple operations (flight, ground, etc.).
    • Enhancements include replacing paper documents with electronic forms and providing more intuitive data access for maintenance and cabin crew. Passengers can also access electronic mail and internet services.

    Health Management Systems (Boeing AHM and Airbus AIRMAN)

    • Boeing Aeroplane Health Management (AHM) monitors systems and parts, and allows users to troubleshoot concerns during flight. Real-time data is sent to ground operations.
    • Airbus AIRMAN is a maintenance application, optimizing maintenance by monitoring the health of the aircraft. Providing quick issue identification and resolution.

    Cabin Systems BITE Testing

    • Refer to BITE Philosophy and BITE Function headings for more detailed information on cabin BITE testing methodology. BITE management is available in these systems via the Flight Attendant Panel (FAP) display and the flight deck Multi-Function Display (MCDU).

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    Typical Electronic/Digital Aircraft Systems II (5.15) PDF

    Description

    This quiz covers the learning objectives related to Integrated Modular Avionics (IMA), Cabin Systems, and Information Systems at Level 2. It delves into the historical background and advantages of adopting integrated modular architectures in commercial aircraft like the Boeing 777. Test your understanding of the digital aircraft systems and their evolution in modern aviation.

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