Integrated Modular Avionics Quiz & Flashcards

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Questions and Answers

What is the primary function of the Backplane Interface Controller (BIC) in the MAU?

To act as a buffer between the NIC and client modules (correct)

To control the ASCB and LAN data transmission

To connect the NIC to the aircraft's personality modules

To provide power to the NIC modules

What type of memory is used in the Bus Interface Controller (BIC) frame buffer?

Read-Only Memory (ROM)

Erasable Programmable Read-Only Memory (EPROM)

Random Access Memory (RAM) (correct)

Flash Memory

What is the purpose of the Aircraft Personality Modules (APMs) in the NIC modules?

To provide power to the NIC modules

To connect the NIC to the aircraft's avionics systems

To control the ASCB and LAN data transmission

To store system identification data and settings (correct)

What is the primary purpose of the software firewalls in the MAUs?

To protect against malicious data from other applications Signup and view all the answers

What data bus is used for data processing and MAU operations?

ASCB, LAN, and CAN Signup and view all the answers

What is connected to the backplane bus through the BIC frame buffer?

Both the NIC and client modules Signup and view all the answers

What is the primary description of Integrated Modular Avionics (IMA)?

A distributed real-time computer network aboard an aircraft Signup and view all the answers

What is one of the benefits of the IMA concept in terms of weight reduction?

Shaving 2000 pounds off the avionics suite Signup and view all the answers

What is a consequence of using fewer computers in the IMA concept?

Reducing maintenance costs and increasing reliability Signup and view all the answers

What is one of the advantages of the IMA concept for flight crew and maintenance personnel?

Reducing workload for flight crew and maintenance personnel Signup and view all the answers

What is one of the benefits of IMA in terms of functional capabilities?

Enabling multiple functions to be achieved with a single LRU Signup and view all the answers

What is the primary function of the Core Processing Input/Output Module in the A380 IMA system?

To integrate shared memory and computing resources for executing avionics applications Signup and view all the answers

What is the technology used for communication between LRMs in the A380 IMA system?

Avionics Full DupleX (AFDX) switched ethernet Signup and view all the answers

How many types of CPIOMs are used in the A380 IMA system?

7 Signup and view all the answers

What type of data is processed by the CPIOM when applications dialogue directly with conventional LRUs?

Non-AFDX data Signup and view all the answers

What is the primary function of the Avionics Data Communication Network (ADCN) in the A380 IMA system?

To enable dialogue between LRMs through AFDX Signup and view all the answers

What system is associated with the CPIOM type X4?

Pneumatic system Signup and view all the answers

What is the primary function of the Propulsion/APU system?

To control and indicate the engine and APU fire detection and extinguishing Signup and view all the answers

What is the main difference between the IMA systems on the Embraer 170/190 and the A380?

The Embraer 170/190 uses independent LRMs, while the A380 uses shared IMA modules Signup and view all the answers

What is the purpose of the Input/Output Modules (IOMs) on the A380?

To accommodate and link with conventional avionics Signup and view all the answers

What is the term used to describe the metal cabinet on the Embraer 170/190 that contains different line replaceable modules?

Modular Avionics Unit (MAU) Signup and view all the answers

What is the primary function of the Core Processing Input/Output Modules (CPIOMs) on the A380?

To host different avionics applications Signup and view all the answers

What is the term used to describe the individual components that can be replaced on the Embraer 170/190 and A380?

Line Replaceable Module (LRM) Signup and view all the answers

What is the primary function of the Avionics Standard-Communication Bus (ASCB)?

To provide a primary communications path between major subsystems Signup and view all the answers

What is the transmission speed of the ASCB?

10 Mb/s Signup and view all the answers

What is the purpose of the resistor terminations in the ASCB?

To reduce signal reflections Signup and view all the answers

What is the duration of each data frame in the ASCB?

12.5 milliseconds Signup and view all the answers

What is the purpose of the transformer coupler in the bus coupler?

To isolate the buses and impedance-match the ASCB and NIC Signup and view all the answers

How many data buses are used in the ASCB for redundancy?

4 Signup and view all the answers

Study Notes

Backplane Interface Controller (BIC)

Serves as a primary control unit for linking various modules in a Modular Avionics Unit (MAU).
Facilitates communication and data transfer between components connected to the MAU.

Bus Interface Controller (BIC) Frame Buffer

Utilizes volatile memory for efficient data processing and quick access.

Aircraft Personality Modules (APMs)

Configure and customize Network Interface Controller (NIC) modules, allowing for adaptability to different aircraft types.

Software Firewalls in MAUs

Provide cybersecurity by managing data flow and preventing unauthorized access to avionics systems.

Data Bus for Processing and Operations

Uses a high-speed communication bus to enable fast data transfer and processing between modules in the MAU.

Connection to Backplane Bus

The BIC frame buffer connects various processing modules and input/output systems to the backplane bus, ensuring smooth data management.

Integrated Modular Avionics (IMA)

Defined by its modular architecture, promoting the integration of various avionics functions in a single system for enhanced functionality.

IMA Weight Reduction Benefits

Fewer individual components lead to a decrease in overall aircraft weight, improving fuel efficiency and performance.

Consequences of Fewer Computers in IMA

Simplifies the avionics architecture, but can create reliance on fewer critical systems, increasing vulnerability to failure.

Advantages of IMA for Flight Crew and Maintenance

Streamlined systems reduce training complexity, allowing personnel to become proficient more quickly.

Functional Capabilities of IMA

Modular design enhances flexibility, enabling easy updates and integration of new functionalities in avionics systems.

Core Processing Input/Output Module in A380

Centralizes processing functions and manages input/output operations to optimize avionics performance.

Communication Technology for LRMs in A380

Employs high-speed data communication protocols to ensure efficient interaction between Line Replaceable Modules (LRMs).

Types of CPIOMs in A380

Utilizes multiple types of Core Processing Input/Output Modules, enhancing system compatibility and performance.

Data Processing by CPIOM

Handles data interactions when applications communicate directly with traditional Line Replaceable Units (LRUs).

Avionics Data Communication Network (ADCN) in A380

Facilitates high-speed communication across various avionics systems, ensuring real-time data transfer and operational efficiency.

CPIOM Type X4

Specifically associated with controlling and managing the propulsion and auxiliary power unit (APU) systems.

Primary Function of Propulsion/APU System

Ensures power management and operational integrity of aircraft propulsion and auxiliary systems.

IMA System Differences: Embraer 170/190 vs A380

Embraer systems have distinct, less integrated architectures compared to the highly modular and integrated A380 systems.

Input/Output Modules (IOMs) on A380

Execute specific input and output operations, managing data transfers between the core processing units and external systems.

Term for Metal Cabinet on Embraer 170/190

Known as the "avionics rack," housing various replaceable modules for easy access and maintenance.

Core Processing Input/Output Modules (CPIOMs) on A380

Handle central processing tasks, ensuring efficient data management and system responsiveness.

Replaceable Components on Embraer 170/190 and A380

Referred to as "Line Replaceable Units" (LRUs), allowing for quick servicing and part replacement.

Avionics Standard-Communication Bus (ASCB)

Provides a unified communication platform for exchanging data among avionics computers and systems.

ASCB Transmission Speed

Operates at high transmission speeds to ensure timely data exchange between systems.

Purpose of Resistor Terminations in ASCB

Match impedance and minimize signal reflection, enhancing data integrity during transmission.

Duration of Each Data Frame in ASCB

Each frame lasts for a set duration, ensuring synchronized communication among various avionics systems.

Purpose of Transformer Coupler in Bus Coupler

Isolates components while providing data transmission, enhancing the system's robustness and reliability.

Redundancy in ASCB Data Buses

Incorporates multiple data buses to ensure data integrity and reliability in case of failure.

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Description

Learn about Integrated Modular Avionics (IMA), a distributed real-time computer network used in aircraft, and its benefits such as weight reduction and part number reduction.

Introduction to Integrated Modular Avionics (IMA)

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