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A Fault-Tolerant On-Board Computing and Data Handling Architecture Incorporating a Concept for Failure Detection, Isolation, and Recovery for the SHEFEX III Navigation System

Schwarz, René und Theil, Stephan (2014) A Fault-Tolerant On-Board Computing and Data Handling Architecture Incorporating a Concept for Failure Detection, Isolation, and Recovery for the SHEFEX III Navigation System. In: Proceedings of the 13th International Conference on Space Operations (SpaceOps). 13th International Conference on Space Operations (SpaceOps), 2014-05-05 - 2014-05-09, Pasadena, California, USA.

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Kurzfassung

The reliable calculation of a navigation solution in the context of space missions, i.e., the estimation of position, velocity, attitude, and angular velocity of objects moving in Earth's atmosphere and in space, implies a highly reliable, fault-tolerant data acquisition, processing, and transfer within the navigation system and to other systems of a spacecraft. In order to develop a highly reliable system architecture, failure and reliability analyses have to be conducted and concepts for fault and failure detection, isolation, and recovery have to be considered. Redundancies for vital components might be introduced into a system to decrease the failure probabilities of particular functional groups and to increase the overall system reliability up to a level on which all single points of failure are eliminated. While introducing redundancies into a system, concepts for redundancy handling have to be conceived. In this paper, the currently envisaged on-board computing and data handling architecture of the navigation system for SHEFEX III, a sounding rocket mission for the development of hypersonic flight and re-entry technologies within the frame of the German SHEFEX program, is presented. This architecture is intended to have no single point of failure within its system boundaries (one-fault tolerance) and incorporates a preliminary concept for failure detection, isolation, and recovery. Its key characteristic is a double modular hot-redundancy scheme of two on-board computer nodes, which is extended by a Byzantine network of sentinels, monitoring the on-board computers. The considerations with regard to reliability, redundancy handling, graceful degradation, the developed failover and switching approaches, and the associated system- and component-level implementation implications are discussed.

elib-URL des Eintrags:https://elib.dlr.de/89451/
Dokumentart:Konferenzbeitrag (Vorlesung)
Titel:A Fault-Tolerant On-Board Computing and Data Handling Architecture Incorporating a Concept for Failure Detection, Isolation, and Recovery for the SHEFEX III Navigation System
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Schwarz, Renérene.schwarz (at) dlr.dehttps://orcid.org/0000-0002-8255-9451NICHT SPEZIFIZIERT
Theil, Stephanstephan.theil (at) dlr.dehttps://orcid.org/0000-0002-5346-8091NICHT SPEZIFIZIERT
Datum:8 Mai 2014
Erschienen in:Proceedings of the 13th International Conference on Space Operations (SpaceOps)
Referierte Publikation:Nein
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Sharp Edge Flight Experiment III (SHEFEX III); on-board computing and data handling architecture; redundancy concepts; double modular redundancy; graceful degradation; failure detection, isolation, and recovery (FDIR); fault tolerance; hybrid navigation systems; high reliability
Veranstaltungstitel:13th International Conference on Space Operations (SpaceOps)
Veranstaltungsort:Pasadena, California, USA
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:5 Mai 2014
Veranstaltungsende:9 Mai 2014
Veranstalter :American Institute of Aeronautics and Astronautics (AIAA)
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Raumtransport
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R RP - Raumtransport
DLR - Teilgebiet (Projekt, Vorhaben):R - Shefex III (alt)
Standort: Bremen
Institute & Einrichtungen:Institut für Raumfahrtsysteme > Navigations- und Regelungssysteme
Hinterlegt von: Schwarz, M.Eng. René
Hinterlegt am:17 Jun 2014 10:36
Letzte Änderung:24 Apr 2024 19:55

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