Results 21 to 30 of about 415 (187)

Development of an expendable turbojet engine for the propulsion of an unmanned aerial vehicle [PDF]

open access: yesFME Transactions
This paper presents preliminary engineering methodology for the design of expendable turbojets in the range of 400 daN thrust. This class of engines are among biggest used for missiles, typical applications are Harpoon or Storm Shadow missiles and ...
Davidović Nikola   +2 more
doaj   +1 more source

Ecologic performance and sustainability evaluation of a turbojet engine under on-design conditions

open access: yesAviation, 2018
Interest in air transportation in the last decade has seen aviation fleet growth and a rise in the energy consumption of aircraft. In accordance with the latest data, the air transportation sector consumes 7.5% of total oil consumption worldwide.
Yasin Şöhret
doaj   +1 more source

Sliding Mode Control for Micro Turbojet Engine Using Turbofan Power Ratio as Control Law

open access: yesEnergies, 2020
The interest in turbojet engines was emerging in the past years due to their simplicity. The purpose of this article is to investigate sliding mode control (SMC) for a micro turbojet engine based on an unconventional compound thermodynamic parameter ...
Khaoula Derbel, Károly Beneda
doaj   +1 more source

Linear dynamic mathematical model and identification of micro turbojet engine for Turbofan Power Ratio control

open access: yesAviation, 2019
Micro turbojets can be used for propulsion of civilian and military aircraft, consequently their investigation and control is essential. Although these power plants exhibit nonlinear behaviour, their control can be based on linearized mathematical models
Khaoula Derbel, Károly Beneda
doaj   +1 more source

Heat-transfer performance of a cooling tube with an obstacle for protection under frosting conditions

open access: yesJournal of Thermal Science and Technology, 2018
Fundamental experiments were conducted on a cooling tube with an obstacle using liquid nitrogen as the coolant under a frost-formation condition. The background of this study is the development of a heat exchanger for an air-breathing engine, which cools
Katsuyoshi FUKIBA, Sota SATO
doaj   +1 more source

Intelligent Thermal Imaging-Based Diagnostics of Turbojet Engines

open access: yesApplied Sciences, 2019
There are only a few applications of infrared thermal imaging in aviation. In the area of turbojet engines, infrared imaging has been used to detect temperature field anomalies in order to identify structural defects in the materials of engine casings or
Rudolf Andoga   +6 more
doaj   +1 more source

A comprehensive approach to understanding irreversibility in a turbojet

open access: yesPropulsion and Power Research, 2018
Regarding interest in and concerns about high efficiency in recent times, an irreversibility assessment of energy conversion systems is significant. Turbojets, a type of energy conversion system, are widely used to provide thrust for aerial vehicles ...
Yasin Şöhret
doaj   +1 more source

Calibration and verification of an original module measuring turbojet engine blades geometric parameters [PDF]

open access: yesArchive of Mechanical Engineering, 2019
The article presents the issue of calibration and verification of an original module, which is a part of the robotic turbojet engines elements processing station. The task of the module is to measure turbojet engine compressor blades geometric parameters.
Dariusz Szybicki   +3 more
doaj   +1 more source

TURBOJET BYPASS ENGINE WITH AFTERBURNER WITH WATER INJECTION AFTER INPUT UNIT PERFORMANCE ANALYSIS

open access: yesАвіаційно-космічна техніка та технологія, 2019
Development of perspective high-speed aircraft inseparably depends on the level of aircraft propulsion engineering as engine performances to determine aircraft capabilities as a whole. The basic requirements to engines of high-speed aircraft are increase
Юрий Александрович Улитенко
doaj   +1 more source

DIAGNOSTIC INVESTIGATIONS OF TURBOJET INJECTORS [PDF]

open access: yesJournal of KONES. Powertrain and Transport, 2013
The basic aim of injectors is to supply a specified amount of fuel to the turbine engine combustion chamber. The fuel should be atomized to the extent which enables its evaporation and helps to produce a homogenous mixture of fuel vapour and air, thus ensuring high efficiency of the combustion process.
Tadeusz Opara, Ryszard Zaremba
openaire   +1 more source

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