High-Speed, Maneuverable, and Terrain-Adaptive Micro-Robot with Tree Frog-Inspired Bionic Feet. [PDF]
Adv Sci (Weinh)A 7.5 mm micro‐robot integrates tree frog‐inspired bionic feet with an electromagnetic linear motor to achieve high‐speed locomotion, slope climbing, and precise turning. It reaches 39 body lengths per second and ascends 30° slopes. The system demonstrates strong potential for inspection tasks in confined and complex environments, such as micro‐aero ...
Zhao W +10 more
europepmc +2 more sources
Model-Based Dynamic Performance Simulation of a Microturbine Using Flight Test Data
Aerospace, 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
Advanced Control of an Electric Fuel-Oil Pump for Small Turbojet Engines
Aerospace, 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]
فناوری 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
Effect of a Secondary Injection on the Performance of Three-Dimensional Over-under TBCC Exhaust Nozzles [PDF]
Journal 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
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Performance Evaluation of a Turbojet Engine by Exergy Analysis of its Components [PDF]
فناوری 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
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Experimental campaign tests on ultra micro gas turbines, fuel supply comparison and optimization [PDF]
, 2018 The increasing demand for miniaturized radio-controlled vehicles inspired the following research. The uses of these unmanned miniaturized/micro vehicles range from aero-modeling to drones for urban control and military applications too.
Capata, Roberto, Saracchini, Matteo
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Resistant Properties of Lubricating Materials with Fullerene Nanoadditives
Проблеми 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
Intensification of convective heat exchange of walls of heat pipe of 3D-printed micro-sized turbojet engine [PDF]
Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2022 The article considers the solution of the urgent problem of creating a micro-sized turbojet engine using 3D printing. The article describes one of the ways to cool the walls of the heat pipe of a small combustion chamber made of heat-resistant material
A. V. Pobelyansky +2 more
doaj +1 more source
Вестник 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