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Functional representation and reasoning about the F/A-18 aircraft fuel system

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3 Author(s)
Pegah, M. ; Dept. of Comput. Sci., Northern Iowa Univ., IA, USA ; Sticklen, J. ; Bond, W.

Functional reasoning, a subfield of model-based reasoning, is discussed. This approach uses abstractions of a device's purpose to index behaviors that achieve that purpose. Functional modeling, a variation on this method, also uses simulation as a core reasoning strategy. The complex causal knowledge of a device along functional lines is decomposed, then a causal story of how the device will operate in a particular situation given stated boundary conditions is composed. The application of the functional approach to modeling the fuel system of a F/A-18 aircraft is described. The representation of the F/A-18 fuel system includes 89 component devices, 92 functions, 118 behaviors, and 181 state variables.<>

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IEEE Expert  (Volume:8 ,  Issue: 2 )