Results 1 to 10 of about 58 (57)

Features of calculation and modeling of flow of rotors and pucher propellers for aerial vehicle in the condition of very rarefied atmosphere

Авіаційно-космічна техніка та технологія, 2022
This article presents the structure of designing and modeling the flow of rotors and pusher propellers in a highly rarefied atmosphere. The aerodynamic characteristics of an airfoil are key factors in determining design accuracy and performance ...
Mykola Kulyk, Fedir Kirchu, Larysa Volianska, Ivan Babichev, Vasyl Yehunko   +4 more
doaj   +1 more source

EFFECT OF THE CLEARANCE BETWEEN ROWS OF COAXIAL PROPFAN ON THRUST

Авіаційно-космічна техніка та технологія, 2020
The thrust of a turboprop engine depends on many factors, one of which is hydraulic loss when flowing around the propeller blades. When using coaxial propellers, this factor plays an even greater role, since in this case the losses associated with the ...
Вячеслав Юрьевич Усенко, Екатерина Викторовна Дорошенко, Михаил Владимирович Хижняк   +2 more
doaj   +1 more source

Efficiency of tandem UAV propulsion fans with toroidal-helical connected blade tips

Авіаційно-космічна техніка та технологія
Unmanned Aerial Vehicles (UAVs) are increasingly in demand for both civilian and military missions. This has become especially evident during combat operations against the Russian Federation’s occupying forces, where battlefield advantages have been ...
Mykola Kulyk, Fedir Kirchu, Larysa Volianska, Ivan Babichev   +3 more
doaj   +1 more source

Assessment of the thrust force of UAV slotted propellers

Авіаційно-космічна техніка та технологія
The thrust characteristics of slotted propellers of an unmanned aerial vehicle are the subject of the study. The study object is a slotted propeller of an unmanned aerial vehicle.
Liubov Markovska, Kateryna Balalaieva, Anton Balalaiev   +2 more
doaj   +1 more source

ЕКСПЕРИМЕНТАЛЬНА МЕТОДИКА ВИЗНАЧЕННЯ НОРМАЛЬНИХ ХАРАКТЕРИСТИК ПОВІТРЯНИХ ГВИНТІВ НА ГВИНТОВОМУ ПРИЛАДІ ГП-1

Системи озброєння і військова техніка
Представлено експериментальну методику визначення аеродинамічних характеристик повітряного гвинта НГ-1 на гвинтовому приладі ГП-1, склад та технічні характеристики експериментального обладнання.
В.А. Безпалий, О.Є. Пушилін   +1 more
doaj   +1 more source

Compact stand for testing single propellers of mini- and micro- unmanned aerial vehicles

Авіаційно-космічна техніка та технологія
This paper presents the development of a stand for the experimental testing of single propellers designed for mini- and micro-unmanned aerial vehicles (UAVs).
Maksym Borysiuk, Yakiv Rudkin
doaj   +1 more source

Topological optimization of a ducted propeller of UAV

Авіаційно-космічна техніка та технологія
The subject of this study is the minimization of the duct mass for a ducted propeller of UAV. The object of this study is a two-bladed ducted quadcopter propeller. The peripheral diameter of the propeller is 128 mm, and the hood is 2 mm thick.
Anton Balalaiev, Kateryna Balalaieva, Grygoriy Golembiyevskyy, Andrii Melchenko, Vyacheslav Usenko   +4 more
doaj   +1 more source

Normal characteristics of a UAV air slot propeller

Авіаційно-космічна техніка та технологія
This paper presents the results of a numerical study of the influence of passive control of the boundary layer around the propeller blade by creating cuts (slits) in the body of the propeller blade of the type 1045, which is widely used in unmanned ...
Lyubov Markovska
doaj   +1 more source

Газотурбинная установка

2022
The subject of the graduate of qualification work is «A gas turbine unit ».The aim of this work is to design a gas turbine unit with a capacity of 4,3 MW, based on the gas turbine unit “GTU-4P”.In the process of this work were produced:1) Calculation of the thermal scheme and the choice of the optimal parameters;2) An approximate calculation of ...
openaire   +2 more sources

Газотурбинная установка

2023
Тема выпускной квалификационной работы: “ Проектирование газотурбинной установки мощностью 17,5МВт на базе судового двигателя ГТД1500” Целью данной работы является разработка газотурбинной ÑƒÑ ...
openaire   +1 more source