Удосконалений метод обґрунтування характеристик турбогвинтового двигуна в складі гібридної турбоелектричної силової установки літального апарата

The development of modern aircraft engines for civil aviation is aimed at reducing fuel consumption and emissions according to the targets set by ICAO, IATA, UNEP, and other world organizations. The environmental targets adopted for a passenger aircraft in 2035-2050 can only be achieved through comprehensive airframe and powerplant improvements. An alternative direction of aircraft engine development is the transition to new powerplant configurations, particularly hybrid turbo-electric powerplants (HTEPP). The research relevance is aimed at improving the scientific method for substantiating the efficiency of HTEPP application in aircraft (AC). The research object is the process of substantiating the rational parametric and technical concept of the HTEPP energy system based on a turboprop engine with electric motor (EM) and fuel cells (FC) for a passenger AC. Methods, models, and laws used for determining the rational characteristics of the HTEPP power system based on the turboprop engine with EM and FC for a passenger AC are the research subjects. This research aims to improve the performance of the HTEPP energy system with a turboprop engine as part of a passenger AC based on the development of a method for determining the degree of hybridization of the energy system with EM and FC. The research objective is to substantiate the line of improvement of the performance of HTEPP as part of a passenger AC based on using different degrees of turboprop engine hybridization and to improve the method and models for determining the parametric and technical concept of the energy system of HTEPP of the passenger AC. System analysis, mathematical and simulation modeling, historical simulation, and analytical methods are among the methods used. The main research results were obtained: the architecture of the HTEPP energy system with a turboprop engine was improved by developing the unit used for water recycling from the FE to the engine gas-air flow duct. The method and models for determining the parametric and technical concept of the HTEPP energy system for a passenger aircraft were further developed. Conclusions. The research results were summarized and formalized in solving the set objectives. The scientific novelty of the obtained results consists in the improvement of the architecture of the HTEPP energy system with a turboprop engine and the development of the method and model for determining the parametric and technical concept of the HTEPP energy system as part of a passenger AC. Further research will determine the performance characteristics and range of application of the passenger AC based on new HTEPP architectural concepts throughout the AC flight cycle.