EXPERT ASSESSMENT OF DECISIONS TO RESTORE THE DESIGN OF AIRCRAFT GLIDERS WITH COMBAT DAMAGE

Abstract

The subject of the research is the development of a methodical approach to decision-making regarding the determination of ways to eliminate combat damage to the structure of aircraft airframes. Considered a set of combinations of the results of the action of two groups of factors: structural and technological schemes of construction of the damaged unit and features of damage caused by the action of various means of damage. In practice, the elimination of specific combat damage takes place taking into account the experience of the engineering and technical staff, who as experts, in addition to the repair documentation, provide for the specifics of the subsequent operation of the aircraft airframe.

The basis for the expert assessment is the information stored in the database: the size and number of damages; the result of analysis of calculations from the point of view of ensuring strength; the complexity of repair work and the availability of technological recommendations for their implementation with the help of relevant specialists; the possibility of replacing the glider unit in military conditions; availability of consumables, equipment, tools, control equipment. The methodical approach involves filling databases and knowledge bases of expert systems with relevant information in four stages: analysis of information on defects in the design of the aircraft airframe; performing calculations to obtain the necessary data regarding the restoration of damaged parts while meeting the conditions for ensuring uniform strength and uniform stiffness after repair; reconciliation of mathematical models in the knowledge base of fuzzy logical conclusion with the experience of experts during the assessment and classification of the technical condition of the aircraft airframe design; determination of the list of solutions for possible options for the restoration of the aircraft airframe and their evaluation according to the criteria of the time of completion of the work and the quantitative composition of the work performers. The value of the labor intensity of work was used to calculate the time of the work. The search for an optimal solution based on the criteria of time and the quantitative composition of performers is based on the concept of Pareto dominance, when none of the criteria can be improved without worsening the other.