Results 21 to 30 of about 440 (183)

Model-Based Dynamic Performance Simulation of a Microturbine Using Flight Test Data

open access: yesAerospace, 2022
Microturbines can be used not only in models and education but also to propel UAVs. However, their wider adoption is limited by their relatively low efficiency and durability. Validated simulation models are required to monitor their performance, improve
Mario Leonardo Erario   +2 more
doaj   +1 more source

Optimization of energy and exergy parameters for a conceptual afterburning turbojet engine

open access: yesJournal of Thermal Engineering, 2023
In this study, parametric cycle analysis of a conceptual turbojet engine with an afterburner (TJEAB) was conducted at sea level conditions-zero Mach. Based on this analysis, exergetic sustainability parameters of TJEAB were scrutinized for military mode (
Hakan AYGUN
doaj   +1 more source

Advanced Control of an Electric Fuel-Oil Pump for Small Turbojet Engines

open access: yesAerospace, 2022
One way to efficiently control the fuel flow of small turbojet engines is to use direct control of the speed of a suitable electric fuel pump, as opposed to using relief valves.
Ladislav Főző, Rudolf Andoga
doaj   +1 more source

A review of studies on air-breathing turbine engines from an energy–exergy viewpoint [PDF]

open access: yesفناوری در مهندسی هوافضا, 2023
Studies show that the analysis of the first law in air propulsion systems alone is not sufficient, and for a complete study of a system, the second law and exergy analysis should also be considered.
jamasb pirkandi   +2 more
doaj   +1 more source

Analytical and experimental research of vaporizer type combustion chamber of expendable turbojet [PDF]

open access: yesFME Transactions
This paper presents analytical and experimental research on expendable turbojet combustion chamber with central-single vaporizer configuration. Expandable turbojet implies that engine is for single use and that simplicity and small size are dominant ...
Davidović Nikola, Jojić Branislav
doaj   +1 more source

Effect of a Secondary Injection on the Performance of Three-Dimensional Over-under TBCC Exhaust Nozzles [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2023
A numerical simulation is used to investigate the flow field characteristics of a three-dimensional over-under turbine-based combined cycle circular-to-rectangular transition exhaust nozzle when only the turbojet flowpath is in operation.
H. Yang, Q. Yang, Z. Mu, Y. Shi, L. Chen
doaj   +1 more source

Performance Evaluation of a Turbojet Engine by Exergy Analysis of its Components [PDF]

open access: yesفناوری در مهندسی هوافضا, 2021
In this research, the performance of the J85-GE21 turbojet engine by exergy analysis of engine components was evaluated. The performance of the engine and its components for different power loads, at S.L.
Morteza Bayati
doaj   +1 more source

Estimating the efficiency of a bypass turbojet engine on the basis of a serial gas generator as a part of the power plant of a high-altitude unmanned aerial vehicle

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2018
The article presents the results of solving the problem of defining the engineering concept of a power plant with a bypass turbojet engine based on the gas generator of the serial domestic engine TV7 117 developed by the JSC UEC-Klimov for an advanced ...
Yu. V. Zinenkov   +3 more
doaj   +1 more source

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

Resistant Properties of Lubricating Materials with Fullerene Nanoadditives

open access: yesПроблеми трибології, 2023
The purpose of this article is to study the possibility of using fullerene additives and their effect on the antiwear properties of aviation mineral and synthetic oils.
V.P. Oleksandrenko   +5 more
doaj   +1 more source

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