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On TTEthernet for Integrated Fault-Tolerant Spacecraft NetworksThere has recently been a push for adopting integrated modular avionics (IMA) principles in designing spacecraft architectures. This consolidation of multiple vehicle functions to shared computing platforms can significantly reduce spacecraft cost, weight, and de- sign complexity. Ethernet technology is attractive for inclusion in more integrated avionic systems due to its high speed, flexibility, and the availability of inexpensive commercial off-the-shelf (COTS) components. Furthermore, Ethernet can be augmented with a variety of quality of service (QoS) enhancements that enable its use for transmitting critical data. TTEthernet introduces a decentralized clock synchronization paradigm enabling the use of time-triggered Ethernet messaging appropriate for hard real-time applications. TTEthernet can also provide two forms of event-driven communication, therefore accommodating the full spectrum of traffic criticality levels required in IMA architectures. This paper explores the application of TTEthernet technology to future IMA spacecraft architectures as part of the Avionics and Software (A&S) project chartered by NASA's Advanced Exploration Systems (AES) program.
Document ID
20150014489
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Loveless, Andrew
(NASA Johnson Space Center Houston, TX, United States)
Date Acquired
July 30, 2015
Publication Date
August 31, 2015
Subject Category
Avionics And Aircraft Instrumentation
Computer Systems
Report/Patent Number
JSC-CN-33727
Meeting Information
Meeting: AIAA SPACE 2015 Conference
Location: Pasadena, CA
Country: United States
Start Date: August 31, 2015
End Date: September 2, 2015
Sponsors: American Inst. of Aeronautics and Astronautics
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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