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Nexus scalable and distributed next-generation avionics bus for space missions
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Shalom, Eddy Chau, Savio N. He, Yutao Some, Raphael R. Bolotin, Gary S. |
| Copyright Year | 2011 |
| Description | A paper discusses NEXUS, a common, next-generation avionics interconnect that is transparently compatible with wired, fiber-optic, and RF physical layers; provides a flexible, scalable, packet switched topology; is fault-tolerant with sub-microsecond detection/recovery latency; has scalable bandwidth from 1 Kbps to 10 Gbps; has guaranteed real-time determinism with sub-microsecond latency/jitter; has built-in testability; features low power consumption (< 100 mW per Gbps); is lightweight with about a 5,000-logic-gate footprint; and is implemented in a small Bus Interface Unit (BIU) with reconfigurable back-end providing interface to legacy subsystems. NEXUS enhances a commercial interconnect standard, Serial RapidIO, to meet avionics interconnect requirements without breaking the standard. This unified interconnect technology can be used to meet performance, power, size, and reliability requirements of all ranges of equipment, sensors, and actuators at chip-to-chip, board-to-board, or box-to-box boundary. Early results from in-house modeling activity of Serial RapidIO using VisualSim indicate that the use of a switched, high-performance avionics network will provide a quantum leap in spacecraft onboard science and autonomy capability for science and exploration missions. |
| File Size | 82545 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20120001239 |
| Archival Resource Key | ark:/13960/t8qc50z74 |
| Language | English |
| Publisher Date | 2011-12-01 |
| Access Restriction | Open |
| Subject Keyword | Man/system Technology And Life Support Fault Tolerance Radio Frequencies Space Missions Chips Bandwidth Footprints Reliability Avionics Switching Fiber Optics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
