In the paper presented there is carried out an analysis of peculiarities in the operation of structural elements and subsystems of gas turbine engine (GTE). A GTE structural reliability is investigated which is defined at the stage of aircraft engine design. There are shown structural logistic formulae of aircraft engine reliability. In the work there is offered a general approach to the life increase of GTE structural elements on the basis of functionally-directed properties. Basic principles for the support of functionally-directed properties of the GTE element base are shown. The ways to ensure a specified rated or limit GTE life on the basis of functionally-directed properties of elements are shown.

It is shown that the compressor of a gas turbine engine consists of a group of blades which experience uneven abrasive-erosion wear characterized with unevenness of three types. To increase compressor blade life it is offered to use function-oriented coatings and to ensure their properties on the basis of the principle of equal resource. In the work there are solved the problems of a structural synthesis of a complex multi-coherent technological process of function-oriented blade group sputtering.

General features of technological engineering of a gas turbine engine with function- based properties of structural elements that provide an increase in its resource under the conditions of uneven operational impacts are presented. A general methodology of technological engineering of a gas turbine engine with function-based properties formed on the basis of a complex multi-connected technological process has been developed. In furtherance of the general methodology of technological engineering of a gas turbine engine, an algorithm for its implementation using an iterative-recurrent approach has been developed.

The paper reports the analysis carried out regarding the peculiarities in the formation of explosion functionally-oriented coatings. It is shown that their properties should be ensured depending on the action peculiarities of operation functions. A schematic diagram of a plant for coating sputtering is shown. Basic characteristics and technological peculiarities for the realization of functionally-oriented coatings in mechanical engineering are established.