In general, an engineering system optimization problem is multidimensional, multicriteria, and multidisciplinary. Unfortunately, currently there is no universal methodology for solving such complicated problems. The large number of published papers in the field of multidisciplinary optimization (MDO), and also our considerable practical experience, allowed us to formulate our MDO concept.

Our MDO concept is based on the simultaneous use of

multilevel,

multicriteria, and

parallel optimization technologies that we developed.

A general view of such a concept is presented in Figure below. The attempt to take into account all possible optimization problem statements resulted in the scheme where a system under study is shown as a certain cube with a large number of layers, each corresponding to a separate engineering discipline. Within the frameworks of each discipline, system analysis can be performed using different tools from the simplest mathematical models to possible prototype experimental evaluations.