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Simplified S/C vulnerability assessments at component level in early design phase at ESA's CDF

: Kempf, S.; Schäfer, F.; Cardone, T.; Ferreira, I; Gerene, S.; Destefanis, R.; Grassi, L.

Preprint urn:nbn:de:0011-n-3751266 (1.4 MByte PDF)
MD5 Fingerprint: b0eb5582971188a2e504dd5eae6a1763
Erstellt am: 12.2.2016

International Astronautical Federation; International Academy of Astronautics -IAA-:
Space - the gateway for mankind's future. 66th International Astronautical Congress, IAC 2015. Vol.3 : Jerusalem, Israel, 12-16 October 2015
Red Hook, NY: Curran, 2016
ISBN: 978-1-5108-1893-4
International Astronautical Congress (IAC) <66, 2015, Jerusalem>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer EMI ()

During recent years, the state-of-the-art risk assessment of the threat posed to spacecraft by micrometeoroids and space debris has been expanded to the analysis of failure modes of internal spacecraft components. This method can now be used to perform risk analyses for satellites to assess various failure levels – from failure of specific subsystems to catastrophic break-up. This new assessment methodology is based on triple-wall ballistic limit equations (BLEs), specifically the Schäfer-Ryan-Lambert (SRL) BLE, which is applicable for describing failure threshold levels for satellite components following a hypervelocity impact. The methodology is implemented in the form of the software tool Particle Impact Risk and vulnerability Analysis Tool (PIRAT).During a recent ESA funded study, the PIRAT functionality was expanded in order to provide an interface to ESA’s Concurrent Design Facility (CDF). The additions include a geometry importer and an OCDT (Open Concurrent Design Tool) interface. The new interface provides both the expanded geometrical flexibility, which is provided by external CAD modelling and an ease of import of existing data without the need for extensive preparation of the model. The reduced effort required to perform vulnerability analyses makes it feasible for application during early design phase, at which point modifications to satellite design can be undertaken with relatively little extra effort. The new interface to PIRAT was successfully demonstrated during a CDF mini-session at the ESA’s CDF facility.