A mehodological approach to quantitative assessment of the repairability of aviation equipment at the repair stage in the conditions of an aircraft repair enterprise

Abstract

A methodological approach for the quantitative assessment of the maintainability of aviation equipment during its repair at an aircraft repair enterprise is presented. The use of the proposed methodological approach will allow identifying the main design flaws that reduce the level of maintainability and obtaining initial data to increase the level of maintainability of aircraft. The methodological approach to assessing the maintainability of aviation equipment during its factory repair focuses on assessing the maintainability of the aircraft as a whole, as well as the maintainability of the airframe and its systems.

The maintainability assessment is carried out in quantitative and qualitative forms for the aircraft as a whole, as well as for the airframe and its systems, aviation equipment, radio-electronic equipment, aviation weapons, airborne transport equipment and special equipment. Separate assessments of the maintainability of aircraft engines are performed.

The main source of initial information for assessing the maintainability of aircraft during their repair should be data on actual labor, material resources, and time costs, as well as data on the structure of these costs.

The maintainability of the aircraft design is a complex and multifaceted property. The task of ensuring the necessary level of maintainability of the created military transport aircraft should be integrated with the anticipated conditions of subsequent operation and repair of this aircraft. At least, maintainability is distributed as follows:

- stationary preventive and restorative repairs (capital, medium) at the aircraft repair enterprise (hereinafter - ARE);

- repair of combat damage both in aviation brigades and at the ARE base;

- current repair in aviation brigades.

Accordingly, the same aircraft design may have different maintainability characteristics depending on the conditions.

The methodological approach presented in the article is intended for assessing the maintainability of aircraft, characterizing preventive and restorative repair in ARE conditions.

Of course, the assessment of aircraft maintainability during their repair in ARE has the following goals:

- identifying the actual state of maintainability, its compliance with the existing requirements for aircraft maintainability indicators;

- determining ways and possibilities for improving repair technological processes, organizing repair production;

- identifying the most realistic possibilities for improving the design (including making design modifications) of the aircraft to improve its maintainability;

- obtaining initial information for forming requirements for aircraft maintainability at the design stage;

- obtaining initial information for developing and implementing advanced forms of operation and repair (including condition-based maintenance).

Conclusion: The presented methodological approach for assessing the maintainability of aviation equipment during its factory repair is intended for assessing the maintainability of aircraft, identifying the main design flaws that reduce the level of maintainability, which allows obtaining initial data for developing appropriate requirements for the developer to adjust the maintainability properties of the aircraft during its design.

The methodical approach, in contrast to the already existing ones, is built taking into account the initial information, which is previously formed at the aircraft repair enterprise during the repair AT of a given type, which allows during the design (development) of the structure LA lay the improvement of its maintainability in the future.

The main source of initial information for assessing the maintainability of aircraft during the repair stage should be data on actual labor, material resources, and time costs, as well as data on the structure of these costs.