Product overview
GTAC’s Jitai Hangkong GATSN™ Airborne Time-Sensitive Network addresses interconnection between airborne equipment, including use as an eVTOL backbone. Its architecture combines GSU network switches, TSN end systems embedded within equipment, and GDIU interface units for legacy devices. The GSU provides published 100/1000 Mbps switching and supports TSN connections, cascaded networks and standard Ethernet mixed networks. This describes an avionics networking architecture.
Integration options include equipment-level TSN access, queuing and sampling ports, and manufacturer-claimed compatibility with ARINC653 operating systems and resident applications. Legacy CAN and RS422 data can reach the GSU through a GDIU. Aircraft-wide backbones, local connections and node resources are configurable. Published timing is up to 100 µs latency across two hops and 1 µs jitter, without measurement conditions.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity | GTAC — Jitai Hangkong GATSN™ Airborne Time-Sensitive Network. |
| Purpose | Can serve as an eVTOL airborne backbone network for high-speed, high-reliability interconnection of aircraft equipment.Described as an aircraft equipment networking system. |
| Network switching rates | 100/1000 Mbps low-latency network switching.Applies to the GSU high-speed TSN network switch. |
| TSN device connectivity and cascading | Supports connection of TSN devices and cascaded networks.Applies to GSU connectivity; supported devices and network topology require configuration confirmation. |
| Ethernet interoperability | Compatible with standard Ethernet for mixed networks.Applies to GSU networking. |
| Embedded TSN end systems | TSN end systems can be embedded in airborne equipment to provide TSN access, with claimed high integrity.Describes an integration option. |
| Software interfaces | Provides queuing and sampling ports; the manufacturer claims full compatibility with ARINC653 operating systems and resident applications.Applies to TSN end systems; compatibility with a particular operating system implementation and application requires confirmation. |
| Legacy bus integration | A GDIU converts legacy bus data, including CAN and RS422, into TSN data for connection to the GSU.Requires a GDIU data interface unit. |
| AFDX comparison | The manufacturer claims greater bandwidth, lower latency and lower cost than AFDX.Manufacturer comparison with AFDX. |
| Integrity functions | Combines data, source, sequence and temporal integrity. |
| Deterministic timing | Two-hop latency up to 100 µs; jitter 1 µs.Latency is specified for two hops. |
| Networking standard | Conforms to IEEE 802.1DP and is compatible with Ethernet.Conformity statement. |
| Network configuration scope | Aircraft-wide backbone networking, local interconnections and individual node network resources can be configured as required.Configuration is described as demand-dependent. |
| Airworthiness-related standards | States conformity with DO-178C and DO-254.Conformity statement. |
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