New embedded S
Power node for Avionics System
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- 4.3.1Current System Configuration
- 4.3.2Distributed configuration
4.3Power node for Avionics SystemThis section illustrates the Selex Galileo approaches to define the concept of the “new” Avionics Architecture by defining, developing and validating the “avionics module”. The way of built with this different “avionics node” through the SPD features and functionalities will be part of to the Dependable Avionics scenario (WP7). These technologies will be implemented in embedded system prototypes that will be part of the nSHIELD demonstrators. The nSHIELD drivers are to provide a scalable solution, to define a minimal set of nodes , to increase the number of supported function and to demonstrate fault tolerance and reconfiguration and so the high dependability of the SG for nSHIELD solution. An “avionics node” can be built with different pieces of the following part:
4.3.1Current System ConfigurationThe current implementation of a typical avionic system is mainly based on a Federated Architecture where several LRUs with remote processing capability and dedicated I/Os provides the requested functionality. All the avionics functionalities such as
are based on an HW and SW Platform which usually differs between them according to the application where are used. The trend for modern aircrafts is to support aircraft application with an Integrated Modular Avionic (IMA) platform. Platform that have to include always more functionality, starting from the navigation/mission functionality to the flight control function including also communication functionality. To implement all the functionalities required therefore the IMA platform should be reconfigurable, reconfigurable means that IMA should be able to change the configuration of the avionic platform by moving application Re-configuration should therefore improve the operational reliability of the aircraft while preserving (or improve) current levels of safety (aircraft systems have to enforce stringent safety requirements that address the effects of failures on the life of passengers). Operational reliability strong addresses the effect of failures on economic aspects of flight operations Avionics systems rely on computing platforms, and these platforms must be designed to provide the required levels of safety, maintenance, overall flight functions (flight management, mission and navigation). The avionics functions must be sustained appropriately in order to ensure a safe flight, yet the hardware components on aircraft operate in a hazardous environment while running software that itself might contain defects. Many techniques have evolved for constructing dependable computer platforms for avionics systems. Architectures have been developed that use various forms of redundancy and reconfiguration to allow continued operation when components fail. In addition, in many cases replicated components are separated within an airframe to prevent their simultaneous loss in the event that there is damage to the airframe. Various techniques are employed to aid in the correct construction of software, and software development is required to follow a rigorous process. Finally, various analysis techniques can be used to estimate some of the important probabilities related to dependability of computing platforms. A dependable avionics system, therefore, is one that can be trusted to support safe aircraft operations. A dependable avionics system needs to include the following attribute: Reliability, Availability, Safety, Confidentiality, Integrity, Maintainability. This means that the avionics system shall be nSHIELD compliant (SPD features satisfied). The general dependability requirements for an avionics system/sub-systems, the SPD NODEs, shall include the nSHIELD SPD attributes.
Either in a IMA or distributed architecture the fundamental components of avionics system architecture are computers (i.e. HW), data busses (i.e. Network) and the application (i.e. either SW services and/or the real application SW). These components may be configured in various computing system architectures, where the purpose of an architecture is to meet the functional demands of the computing platform and the dependability requirements. The key objective in moving towards a distributed Integrated Modular Avionic (IMA) architecture is to realize a new platform Hardware and Software based. 
Figure - Modular Avionics Architecture to/from SELEX GALILEO Distributed Modular Avionics Architecture The following figure shows a possible application/scenario for the Distributed Modular Avionics Architecture. The functionalities are distributed through the “computer #1”, “computer #2” and “computer #3”. The three computer have to be compliant the nSHIELD solution for Dependability, Security and Privacy. The source/sink box represents the following equipment
Figure – Selex Galileo Distributed Modular Avionics Architecture for Surveillance System Directory: images images -> Pelan pentaksiran kursus images -> Military callsign list as of dec 2010 images -> For Date: 02/01/2013 Friday Call Number Time Call Reason Action 13-768 0008 motor vehicle stop warning Issued images -> Creating Buy-In – Building Relationships images -> Deadline: Saturday, March 12th, 2016 images -> News items from Raising Our Voices images -> Last year four of the best Afrikaans Christian singers joined forces to tour Down Under with the production ‘Manne wat Glo’ images -> World-renowned vocal ensemble sweet honey in the rock images -> Peoples Voice Café History images -> Simon Mckeown Artist C. V. DaDaFest International Artist of the Year 2010 Download 1.14 Mb. Share with your friends:
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