Military Embedded Systems

NASA Orion completes first spaceflight with TTTech's TTEthernet technology onboard


December 05, 2014

NASA, Lockheed Martin, and Honeywell have successfully completed the NASA Orion test flight, which lifted off aboard a Delta IV Heavy rocket to perform its first spaceflight. TTTech has been a partner with NASA since 2008 and supported the design of the NASA Orion Onboard Data Network (ODN) as well as advanced integrated system architectures for human-rated spaceflight based on TTTech’s TTEthernet technology.

NASA, TTTech, and other industry participants contributed to an open Ethernet-based standard suitable for the deployment in upcoming NASA programs and space systems, such as the Orion project. TTTech’s Deterministic Ethernet network technology – TTEthernet – combines commercially available Ethernet infrastructure with deterministic QoS Layer 2 enhancements and services. These services are designed to enable synchronous, highly dependable embedded computing and networking capable of tolerating multiple faults.

With TTEthernet used onboard the Orion spacecraft, this enables graphics data streams, robustly partitioned critical control data, and standard LAN messages to operate in one network without interference. TTEthernet also enables the handling of mixed-level criticality functions in complex Ethernet-based networks, which aims to effectively circumvent the limitations of Ethernet technology for the design of advanced integrated systems.

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