Citation: | LI Junliang, TENG Kenan, YANG Chunzhou, et al. Instantaneous availability of military aircraft during mission preparation period[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(4): 754-760. doi: 10.13700/j.bh.1001-5965.2016.0279(in Chinese) |
Military aircraft is a complex repairable system, instantaneous availability analysis of it is a difficult problem in the integrated logistics support field. The stochastic maintenance task net (SMTN) based on mission requirement and technical condition of the military aircraft is constructed, and the maintenance function distribution types of activities in the SMTN are different. The moment generating function is defined, and the numerical characteristics of the system maintenance distribution function are solved. The functions are verified by substituting expectation and variance into different distribution functions, and the maintenance functions that meet the actual situation are selected. And the military aircraft availability in the mission preparation period is simulated. In the calculation process, a new method is designed based on the Monte Carlo method, which can increase calculation efficiency and well reflects the logic, topology and randomness of the maintenance process. The simulation result can truly reflect the fluctuation of the instantaneous availability of military aircraft in the mission preparation period. This method can be widely applied to complex repairable systems to provide basis for decision-making of the use of equipment and to provide quantitative indicators for support effectiveness evaluation of support system, and is of certain exploration value on the research of "dynamic" indicator in the integrated logistics support field.
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