Ulitenko Y. Improved scientific-methodological apparatus for justification of parameters and characteristics of air breathing engines of high-speed aircraft power plants.

The object of study is the workflow of high-speed aircraft propulsion air-jet engines. The subject of the study is the parameters and characteristics of air-jet engines of the high-speed aircraft power plant. Methods of research - methods of system analysis for hierarchical analysis of basic parameters and characteristics of high-speed aircraft and air-jet engines of the power plant and their mathematical modeling, methods of statistical analysis for determining the weight, geometric and aerodynamic characteristics of the elements of the glider of the aviation-space system and altitude-velocity system of characteristics of air-jet engines of power plant with specification of their choice for mathematical modeling of flight night characteristics of high-speed aircraft, a retrospective method that allows you to develop and analyze the relative criterion for assessing the degree of impact of a new technical solution on the quality of the task of the aerospace system. retrospective analysis determines the technical characteristics, reflecting the degree of perfection and complexity of the design and production indicators, characterizing the technologies of manufacturing the aerospace system, methods of mathematical modeling of the work process in the elements of air-jet engines of the power plant to improve the parameters and characteristics of the engine based on the propulsion water at the inlet of air-jet engines. The purpose of the dissertation is to improve the scientific and methodological apparatus of substantiation of the parameters and characteristics of air-jet engines of the power plant of a high-speed aircraft to improve its operational characteristics. The results obtained: on the basis of the advanced scientific and methodological apparatus the parameters and characteristics of air-jet engines of the power plant with the estimation of the degree of influence of new technical decisions on the quality of the task of the aviation-space system are grounded. Improved scientific and methodological apparatus allows in the early stages of research and development work on aerospace systems and their air-jet propulsion engines to reduce the number of variants of structural and layout solutions by substantiated requirements for the cost of their vital life conditions and time resources. This, in turn, will reduce the cost and time of designing new, deep modernization of existing models of aerospace systems and their components. Introduced at the Zaporozhye Engineering Bureau of Progress named after Academician OG Ivchenko and the National Aerospace University named after ME Zhukovsky (KhAI). Field of application - aircraft engine building.