THE NEED TO PERFORM THE PERIODIC ASSESSMENT OF THE OPERATING STRENGTH OF AIRCRAFT
DOI:
https://doi.org/10.54858/dndia.2021-17-14Keywords:
operational strength, glider design, aircraft, technical resourse, assessment, measuresAbstract
The article substantiates the assessment and practical necessity of performing the operational strength of aircraft in real operation throughout the service life, based on a set of measures to help identify weaknesses in aircraft design, assess the effectiveness of improvements, develop measures to eliminate and prevent destruction of power elements design of aircraft in operation and ultimately make an informed decision on the further operation of aircraft.
High requirements for technical data and characteristics of modern aircraft have led to a significant increase in their cost. To reduce losses in the creation of promising aircraft, it is necessary at the initial stages of design to carefully assess the relationship between the characteristics of all components of the aircraft complex, life cycle cost and operation. The choice of the optimal design of the aircraft is complicated by the need to take into account the technology of creating a glider, power plant, weapons, electronic and other equipment.
Operational strength is a concept in the field of materials science, it denotes the estimated service life of the product. Operational strength describes the ability of materials and finished products to withstand static, quasi-static and dynamic (cyclic or shock) loads without harm within the estimated service life and taking into account significant environmental conditions. Success in solving the problem of ensuring the operational strength of aircraft is achieved by the joint efforts of many specialists from different institutions and services, as the operational strength of aircraft design is laid in the creation, provided in production, maintained in operation and restored during repairs. The design of the aircraft glider during operation continuously accumulates non-destructive damage: cracks appear, fixed joints and joints wear out.
The operational strength is influenced by the aerodynamic and structural-power scheme of the aircraft, the quality and type of technology used, technology of construction, and the validity of application conditions, completeness of calculations and tests, standardization and unification of parts and components, availability of components and parts for visual inspection and instrumental control, survivability, maintainability, completeness and quality of technical documentation for both manufacture and operation, qualification of operating and maintenance personnel.
To perform a combat mission and ensure flight safety, the design of aircraft must be sufficiently strong and rigid under the action of operational loads. The purpose of periodic assessment of operational strength is to identify the degree of damage to the structure of the glider and the landing organs of aircraft at this stage of its operation or after operation under certain conditions (long-term storage, operation from the ground, etc.).
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