TY - GEN
T1 - An event tree/fault tree/embedded markov model approach for the psam-8 benchmark problem concerning a phased mission space propulsion system
AU - Mandelli, Diego
AU - Aldemir, Tunc
AU - Zio, Enrico
PY - 2006
Y1 - 2006
N2 - The object of analysis of the proposed benchmark exercise is a system of ion propulsion for a science mission to the outer solar system. The propulsion system consists of a single propellant tank and 5 propulsion assemblies. The mission consists of 7 phases with different durations and requirements for the number of operational assemblies. The objective of the benchmark exercise is to determine the time dependent reliability of the propulsion system over the planned mission duration using the provided reliability data. Mission success implies success of all phases. The solution approach here undertaken uses fault-tree/event-trees (ET/FTs) for each functional mode (start up, shut down, operation and no-operation) to generate the transition probabilities of a discrete-time, inhomogeneous embedded Markov chain consisting of 11 states. Results of the study show that assembly failure during Start Up and the Shut Down functional modes of the propulsion system significantly contribute to mission failure.
AB - The object of analysis of the proposed benchmark exercise is a system of ion propulsion for a science mission to the outer solar system. The propulsion system consists of a single propellant tank and 5 propulsion assemblies. The mission consists of 7 phases with different durations and requirements for the number of operational assemblies. The objective of the benchmark exercise is to determine the time dependent reliability of the propulsion system over the planned mission duration using the provided reliability data. Mission success implies success of all phases. The solution approach here undertaken uses fault-tree/event-trees (ET/FTs) for each functional mode (start up, shut down, operation and no-operation) to generate the transition probabilities of a discrete-time, inhomogeneous embedded Markov chain consisting of 11 states. Results of the study show that assembly failure during Start Up and the Shut Down functional modes of the propulsion system significantly contribute to mission failure.
UR - https://www.scopus.com/pages/publications/84892660464
M3 - Conference contribution
AN - SCOPUS:84892660464
SN - 0791802442
SN - 9780791802441
T3 - Proceedings of the 8th International Conference on Probabilistic Safety Assessment and Management, PSAM 2006
BT - Proceedings of the 8th International Conference on Probabilistic Safety Assessment and Management, PSAM 2006
T2 - 8th International Conference on Probabilistic Safety Assessment and Management, PSAM 2006
Y2 - 14 May 2006 through 18 May 2006
ER -