Podcast
Questions and Answers
What is the primary function of the Power Supply in the MAU?
What is the primary function of the Power Supply in the MAU?
- To translate aircraft power to backplane conditioned power (correct)
- To supply the interface between the internal backplane bus and external bus systems
- To act as a gateway for modules to access the ASCB/LAN data buses
- To perform various aircraft control and monitoring functions
What is the role of the Network Interface Controller (NIC) in the MAU?
What is the role of the Network Interface Controller (NIC) in the MAU?
- To supply the interface between the internal backplane bus and external bus systems
- To perform digital engine operating system compliant processing
- To translate aircraft power to backplane conditioned power
- To manage communication in the MAU (correct)
What type of processing system is used in the User Modules?
What type of processing system is used in the User Modules?
- Generic I/O-based processing system
- Analog-based processing system
- Custom I/O-based processing system
- Digital Engine Operating System (DEOS) compliant processing system (correct)
What is the purpose of the User Modules in the MAU?
What is the purpose of the User Modules in the MAU?
What is the function of the custom and generic I/O in the User Modules?
What is the function of the custom and generic I/O in the User Modules?
What is the role of the NIC in relation to the internal backplane bus and external bus systems?
What is the role of the NIC in relation to the internal backplane bus and external bus systems?
What is the primary function of the Modular Avionics Unit (MAU) in the Embraer 170/190?
What is the primary function of the Modular Avionics Unit (MAU) in the Embraer 170/190?
What is the purpose of the front connectors on the Line Replaceable Modules (LRM)?
What is the purpose of the front connectors on the Line Replaceable Modules (LRM)?
What is the benefit of having two independent processing systems (channels) in each Modular Avionics Unit (MAU)?
What is the benefit of having two independent processing systems (channels) in each Modular Avionics Unit (MAU)?
What is the Virtual Back Plane Bus used for in the Modular Avionics Unit (MAU)?
What is the Virtual Back Plane Bus used for in the Modular Avionics Unit (MAU)?
What is the purpose of the Metal Cabinet in the Modular Avionics Unit (MAU)?
What is the purpose of the Metal Cabinet in the Modular Avionics Unit (MAU)?
What is the function of the Line Replaceable Modules (LRM) in the Modular Avionics Unit (MAU)?
What is the function of the Line Replaceable Modules (LRM) in the Modular Avionics Unit (MAU)?
What happens to frames with errors in a network?
What happens to frames with errors in a network?
What is the purpose of the Actuator Input-Output Processor (AIOP) modules in the autopilot system?
What is the purpose of the Actuator Input-Output Processor (AIOP) modules in the autopilot system?
What is the result of detecting too many errors in the network?
What is the result of detecting too many errors in the network?
What is the role of the Flight Guidance Control System (FGCS) in the autopilot system?
What is the role of the Flight Guidance Control System (FGCS) in the autopilot system?
What happens when a node detects an error in the network?
What happens when a node detects an error in the network?
What is the purpose of the clutched electro-mechanical servo assemblies in the autopilot system?
What is the purpose of the clutched electro-mechanical servo assemblies in the autopilot system?
What is the purpose of the rudder pedal LVDT signal in the autopilot system?
What is the purpose of the rudder pedal LVDT signal in the autopilot system?
What is the role of the FCMs in the autopilot system?
What is the role of the FCMs in the autopilot system?
What is a characteristic of IMAs within a given type?
What is a characteristic of IMAs within a given type?
What is an example of an avionics application hosted by an IMA in a B787?
What is an example of an avionics application hosted by an IMA in a B787?
What is the purpose of the CAN bus interface in the autopilot system?
What is the purpose of the CAN bus interface in the autopilot system?
What is an example of a mechanical system controlled by an IMA in a B787?
What is an example of a mechanical system controlled by an IMA in a B787?
What is the primary function of the Input/Output Module in the Avionics Data Communication Network?
What is the primary function of the Input/Output Module in the Avionics Data Communication Network?
Which of the following systems is NOT a fuel application?
Which of the following systems is NOT a fuel application?
What type of technology is used for communication between ADCN subscribers?
What type of technology is used for communication between ADCN subscribers?
What is the primary characteristic of all Input/Output Modules?
What is the primary characteristic of all Input/Output Modules?
Which of the following is a data link application?
Which of the following is a data link application?
What is the term used to describe the computers connected directly to the Avionics Data Communication Network?
What is the term used to describe the computers connected directly to the Avionics Data Communication Network?
Flashcards
Rudder Actuator Commands
Rudder Actuator Commands
The combination of rudder pedal LVDT signals and autopilot trim commands determines the rudder actuator commands.
Autopilot Pitch Trim Commands
Autopilot Pitch Trim Commands
Autopilot pitch trim commands, including auto-trim and Mach trim, are sent to Flight Control Modules (FCMs) and combined with configuration trim for transmission to the horizontal stabilizer via CAN bus.
Integrated Modular Avionics (IMA)
Integrated Modular Avionics (IMA)
A type of aircraft system architecture where multiple independent functions are integrated onto a single or a limited set of computing units.
B787 IMA Applications
B787 IMA Applications
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Interchangeable IMAs
Interchangeable IMAs
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Network Interface Controller (NIC)
Network Interface Controller (NIC)
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Modular Avionics Unit (MAU) in Embraer 170/190
Modular Avionics Unit (MAU) in Embraer 170/190
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MAU Functionality
MAU Functionality
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MAU Redundancy
MAU Redundancy
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MAU Communication Management
MAU Communication Management
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MAU Error Management
MAU Error Management
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Flight Guidance Control System (FGCS) in Embraer 190
Flight Guidance Control System (FGCS) in Embraer 190
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Actuator Input-Output Processors (AIOPs)
Actuator Input-Output Processors (AIOPs)
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Core Processing Input/Output Module (CPIOM) and Input/Output Module (IOM)
Core Processing Input/Output Module (CPIOM) and Input/Output Module (IOM)
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IOM Interoperability
IOM Interoperability
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Cockpit and Flight Controls Applications
Cockpit and Flight Controls Applications
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Energy Applications
Energy Applications
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Fuel Applications
Fuel Applications
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Landing Gear Applications
Landing Gear Applications
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What influences rudder actuator commands?
What influences rudder actuator commands?
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How are autopilot pitch trim commands transmitted?
How are autopilot pitch trim commands transmitted?
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What is Integrated Modular Avionics (IMA)?
What is Integrated Modular Avionics (IMA)?
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What is the role of the Network Interface Controller (NIC)?
What is the role of the Network Interface Controller (NIC)?
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How are MAUs connected in Embraer 170/190?
How are MAUs connected in Embraer 170/190?
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What are the functionalities of a MAU?
What are the functionalities of a MAU?
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What ensures reliable operation of a MAU?
What ensures reliable operation of a MAU?
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How is MAU communication managed?
How is MAU communication managed?
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How does the MAU handle errors?
How does the MAU handle errors?
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What is the role of the FGCS in Embraer 190?
What is the role of the FGCS in Embraer 190?
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What functions are performed by AIOPs?
What functions are performed by AIOPs?
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Study Notes
Autopilot and Control Systems
- Rudder actuator commands are driven by the combination of rudder pedal LVDT signals and autopilot trim commands.
- Autopilot pitch trim commands, including auto-trim and Mach trim, are sent to Flight Control Modules (FCMs) and integrated with configuration trim for transmission to the horizontal stabilizer via CAN bus.
Integrated Modular Avionics (IMA) Overview
- Types of IMAs vary based on aircraft models and systems; within each type, IMAs are interchangeable but may require software reconfiguration.
- B787 IMA applications include:
- Avionics: Covers displays, flight management, data acquisition, and communication management.
- Environmental Control Systems: Air conditioning, pressurization, and electronic cooling management.
- Electrical Systems: Manages secondary electrical distribution and window heating.
- Fuel Systems: Monitors fuel quantity and manages nitrogen generation.
- Hydraulics and Mechanical Systems: Control of brakes, landing gear, and steering functionalities.
Network Interface Controller (NIC)
- Acts as a gateway enabling modules to access ASCB/LAN data buses.
- Interfaces between internal backplane buses and external bus systems.
Modular Avionics Unit (MAU)
- Embraer 170/190 employs MAUs linked through data buses to aircraft systems.
- MAUs host independent applications sharing computing and memory resources and provide I/O interface services to conventional avionics.
- Each MAU consists of two independent processing systems for redundancy, enclosed in a metal cabinet grounded to the aircraft frame.
Communication and Error Management
- MAU communication managed by NIC, ensuring data integrity.
- Frames with errors are disregarded; erroneous transmissions signal issues via the network, allowing for retransmission attempts and potential node disconnection in case of repeated errors.
Flight Guidance Control System (FGCS)
- Autopilot in Embraer 190 is part of the FGCS application, which interfaces standard pilot commands with autopilot control systems using electro-mechanical servo assemblies.
- Actuator Input-Output Processors (AIOPs) perform computations for autopilot and Yaw Damper (YD) functions, enhancing control reliability.
Input and Output Modules
- Core Processing Input/Output Module (CPIOM) and Input/Output Module (IOM) act as ADCN subscribers managing conventional data conversion to AFDX data for the Avionics Data Communication Network (ADCN).
- IOMs are interchangeable and facilitate communications between LRUs and the ADCN through AFDX technology.
Applications in Various Systems
- Cockpit and flight controls applications manage controls, warnings, and data links.
- Energy applications monitor circuit breakers and manage electrical loads.
- Fuel applications focus on CG measurement and fuel management systems, while landing gear applications oversee braking and gear operations.
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Description
This quiz covers the integrated modular avionics architecture of Embraer 170/190 aircraft, including the modular avionics units and data buses. It is part of the CASA Part 66 training materials for turbine aeroplane aerodynamics, structures, and systems.
