Avionics Full Duplex Ethernet Research Articles

ОРГАНИЗАЦИЯ ПЕРЕДАЧИ СИГНАЛЬНЫХ СООБЩЕНИЙ В ВЫЧИСЛИТЕЛЬНЫХ СЕТЯХ ЛЕТАТЕЛЬНОГО АППАРАТА

This article considers the problem of transmitting signal text messages in the onboard computer networks of an aircraft. The article provides a brief overview of promising areas in the design of modern avionics, such as integrated modular avionics and Avionics Full Duplex Ethernet. The text of the article provides a protocol that allows you to generate the text of the signal zone on the multifunctional indicator in the cockpit, as well as to transmit the encoded text using the Arinc 664 (AFDX) protocol. The use of this protocol makes it possible to transmit to the multifunctional indicator in the cockpit the zone of signal messages completely formed in the computing unit. The advantage of this approach is the absence of information fragmentation, and therefore an increase in the frequency of updating information on the indicator screen.

Organizing message transmission in AFDX networks

In this paper, a problem of periodical message transmission in the onboard networks based on the Avionics Full Duplex Ethernet (AFDX) standard is formalized and an algorithm for solving this problem is proposed. The algorithm combines the greedy approach with the limited exhaustive search and consists of several procedures to solve the problem step by step with respect to the constraints imposed. The results of the experimental research aimed at investigating the effectiveness of the proposed algorithm are presented.

Studying the effectiveness of an aggregation procedure for virtual links in onboard switched networks design

The problem of organizing periodical message transmission for onboard networks based on the Avionics Full Duplex Ethernet (AFDX) standard is considered, and an approach to solving it is proposed. An important stage of solving this problem is the aggregation procedure, in which a virtual link, via which several messages from one partition are transmitted, is formed. The aggregation procedure is described in detail, and the results from experimental studies of its effectiveness are presented.

The Evolution of Aircraft Data Networks

paper presents the evolution of Aircraft Data Networks (ADN)'s. It describes various Avionics data network protocols based on the Avionics systems architecture. The paper describes the evolution from a simple point-to-point protocol presented in ARINC 429 to a shared data bus protocol presented in ARINC 629. Finally, the new Data network based on AFDX (Avionics Full-duplex Ethernet) is discussed. AFDX is a new standard based on Ethernet technology and able to handle today's requirements. A brief comparison between the three different protocols is presented. The comparison shows that AFDX provides better performance and flexibility without losing the compliance with safety, redundancy and reliability of Avionics requirements