E. Lomtadze, C. Deneke, S. Rüsch

The network architecture of today´s aircraft cabins is centralized and heterogeneous: proprietary bus systems, protocol converters and dedicated wiring add weight, complexity and power consumption. A consistently Ethernet-based, decentralized cabin network promises significant savings here. For connecting simple end devices deployed in large numbers, 10BASE-T1S as specified in IEEE 802.3cg is of particular interest, since this Single Pair Ethernet variant supports a multidrop bus topology. This paper investigates whether 10BASET1S is suitable for cabin applications. For that, a network demonstrator including eight nodes connected via a 25 m multidrop bus was built, representing the connection of several passenger service units (PSUs) to a higher-level control unit. A novel, display-based PSU serves as the example application. The demonstrator was evaluated with respect to goodput, robustness, modularity, audio playback synchrony and total cable length. The measurements resulted in a goodput close to the theoretical maximum, fair bandwidth distribution across seven simultaneously transmitting nodes and synchronization deviations below 1 µs for multicast audio streaming. The sensitivity of the bus topology to disturbances on the trunk proved critical. 10BASE-T1S is therefore assessed as suitable for cabin functions of low design assurance levels (DAL).

Deutscher Luft- und Raumfahrtkongress 2026, Aachen

Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2026

Conference Paper

englisch

21,0 x 29,7 cm, 6 Seiten

10.25967/680495

10BASE-T1S, Single Pair Ethernet, Aircraft Cabin Network, Network Demonstrator, Multidrop, Passenger Service Unit, PLCA

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Lomtadze, E.; Deneke, C.; Rüsch, S. (2026): Development and Evaluation of an Ethernet-Based Network Demonstrator for Controlling a Novel Passenger Service Unit in the Aircraft Cabin. Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V.. (Text). https://doi.org/10.25967/680495.

30.10.2026