This paper discusses the distributed nature of airborne software intensive systems. The concept of fly-by-wire, the issues of safety, component communication, and certification are on the forefront of modern airborne applications. Since the communication between variety of onboard systems and subsystems is of paramount importance, the paper discusses the properties of new bus standard based on ...

This 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 dis...

This paper focuses on the network equipment fault monitoring and diagnosis software, studies of monitored AFDX based algorithm. Firstly, range characteristic parameters are designed to identify type, correlation between detection results at each location can be obtained. Secondly, data storage management scheme first level filtering second caching mechanism is for collected in detection. Then, ...

Reliable communication among avionic applications is a crucial prerequisite for today’s all-electronic fly-by-wire aircraft technology. The AFDX switched Ethernet has been developed as a scalable, cost-effective network, based upon IEEE 802.3 Ethernet. It uses redundant links to increase the availability. Typical consensus strategies for the redundancy management task are not feasible, as they ...

The gateway impact on the end to end system performances is a major challenge in the design process of heterogeneous embedded systems. In this paper, this problem is tackled for a specific avionics network AFDX with CAN to identify the main interconnection issues. The results herein show the possible enhancements of the system performances thanks to an optimized gateway based on a frames poolin...

AFDX, Avionics Full Duplex Switched Ethernet Network, is an aircraft data network using the FIFO scheduling strategy to transmit data. In this circumstance, the delay of the critical data is large, while congestion is uncertain. To cope with this problem, this paper presents a Holistic Queue Scheduling policy to optimize the real-time performance of AFDX, and estimate the latency bounds based o...

Until recently, there was not a strong need for networking inside aircrafts. Indeed, the communications were mainly cabled and handled by Ethernet protocols. The evolution of avionics embedded systems and the number of integrated functions in civilian aircrafts has changed the situation. Indeed, those functionalities implies a huge increase in the quantity of data exchanged and thus in the numb...

The AFDX (Avionics Full DupleX switched Ethernet) which has been standardized as ARINC 664 is based on Ethernet technology. Using full duplex links eliminates the inherent indeterminism of vintage Ethernet due to frames collision, but it shifts in fact the problem to the switch level where various flows enter in competition when using the same output port. Thus main problem is due to the indete...

The Avionics Full Duplex Switched Ethernet (AFDX) has been developed to provide reliable data exchange with strong data transmission time guarantees in internal communication of the aircraft. The AFDX design is based on the principle of a switched network with physically redundant links to support availability and be tolerant to transmission and link failures in the network. In this work, we de...