METHOD AND TOOL FOR AIDED AIRCRAFT DESIGN USING A CRITERION OF OPERATIONAL AVAILABILITY

A method for the computer-aided design of an aeronautic system forming all or part of an aircraft, using a criterion of maintenance time cost over a given period of use. The cost is computed as the weighted sum of a first component representing the mean flight time lost during this period, a second component representing the mean unscheduled maintenance time for this system during said period, and a third component representing the scheduled maintenance time for this system throughout said period. The configuration corresponding to the lowest time cost is then selected.