Results 1 to 10 of about 435 (178)
Mach 4 Simulating Experiment of Pre-Cooled Turbojet Engine Using Liquid Hydrogen
Aerospace, 2022 This study investigated a pre-cooled turbojet engine for a Mach 5 class hypersonic transport aircraft. The engine was demonstrated under takeoff and Mach 2 flight conditions, and a Mach 5 propulsion wind tunnel test is planned.
Hideyuki Taguchi +2 more
exaly +3 more sources
Aerospace, 2022 Turbojet engines have a slow response and require mechanical assistance to perform vertical take-offs and landings. In this paper, we propose a vertical take-off and landing (VTOL) aircraft that contains one-dimensional thrust vectoring nozzle modules to
Yongsheng Gao, Yanhe Zhu, Zang Xizhe
exaly +3 more sources
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
Impact of Using Chevrons Nozzle on the Acoustics and Performances of a Micro Turbojet Engine
Applied Sciences (Switzerland), 2021 This paper presents a study regarding the noise reduction of the turbojet engine, in particular the jet noise of a micro turbojet engine. The results of the measurement campaign are presented followed by a performances analysis which is based on the ...
Grigore Cican +2 more
exaly +3 more sources
Robust Control of Small Turbojet Engines
Machines, 2019 Modern turbojet engines mainly use computerized digital engine control systems. This opens the way for application of advanced algorithms aimed at increasing their operational efficiency and safety.
Rudolf Andoga +2 more
exaly +3 more sources
Intelligent Thermal Imaging-Based Diagnostics of Turbojet Engines
Applied Sciences (Switzerland), 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
Stanislav SZABÓ +2 more
exaly +3 more sources
AerospaceIncreasing aviation activities have heightened concerns about particulate emissions from aircraft engines. Current ICAO standards mainly focus on large civil turbofan engines, leaving a gap in the research on PN emissions from small aircraft engines ...
Meiyin Zhu, Liuyong Chang, Guangze Li
exaly +3 more sources
Single Neural Adaptive PID Control for Small UAV Micro-Turbojet Engine [PDF]
Sensors, 2020 Wei Tang
exaly +2 more sources
Control-Oriented System Identification of Turbojet Dynamics
AerospaceThe autonomous operation of turbojets requires reliable, accurate, and manageable dynamical models for several key processes. This article describes a practical robust method for obtaining turbojet thrust and shaft speed models from experimental data ...
Selcuk Ekici +2 more
exaly +3 more sources
An example of use of gas turbine engine compressor, which has been mastered in production and has good characteristics in a new product project [PDF]
Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2022 The development of a new gas turbine engine requires a lot of time and money spent on the design and testing its compressor, which has been shown as the most complex and time-consuming assembly unit of the engine.
A. V. Grekhnev
doaj +1 more source