Results 31 to 40 of about 2,713 (191)

Computational Analysis of Flow Field on the Propulsion Nozzle of a Micro-Turbojet Engine

The Aeronautical Journal, 2012
ABSTRACTInfrared signal measurements from a micro-turbojet engine are conducted to understand the characteristics of the engine performance and the infrared signal by varying the exhaust nozzle configuration. A cone type nozzle and five rectangle type nozzles whose aspect ratios vary from one to five are used for this experimental work. As a result, it
Jorge Luis Garrido-Téllez, Miguel Toledo Velázquez, Samuel Alcántara-Montes, José Ángel L. Ortega-Herrera, Arturo Reyes-León   +4 more
  +7 more sources

Design and Analysis of Annular Combustion Chamber for a Micro Turbojet Engine

, 2019
The design of high performance combustion chambers for turbojet engines is considered as one of the most challenges that face gas turbine designers, since the design approach depends on empirical correlations of data derived from the previous design experiences.
Rashid Slaheldinn Elhaj Mohammed
openalex   +3 more sources

Research of Turbofan Engine Derived from Micro Turbojet Engine

International Journal of Gas Turbine, Propulsion and Power Systems, 2023
Yunsup Hwang, Seok‐Min Kim, Dong‐Eun Lee, Dong-Ho Rhee, Heeyoon Chung, Young Seok Kang   +5 more
openalex   +3 more sources

Vibration Analysis of a Micro Turbojet Engine under Two Impeller Structural Faults

Proceedings of Global Power & Propulsion Society
Disk fracture and locking nut loosening of centrifugal impeller leads to severe vibration of micro turbojet engines, posing significant threats to engine stability and safety. In order to identify the engine vibration characteristics induced by the above two faults in a practical micro aero-engine, vibration acceleration of the engine casing is ...
Zhiming Yang, Ruixian Ma, Yongkui Lei, Linyuan Jia, Sara Alseiari, Heba Youssef, Maryam AlMheiri   +6 more
openalex   +2 more sources

Flow physics in a micro turbojet engine inter-shaft fuel supply system [PDF]

Physics of Fluids
Inter-shaft fuel supply systems (ISFSSs) consisting of a shaft annulus and a fuel slinger are usually used in micro turbojet engines to pump the fuel to the combustor, aiming at reducing engine's size and weight. Differing from the configuration with stationary fuel pipework, the fast-rotating shaft in the annulus would induce significant drag ...
Zhixun Wang, Kehui Liu, Zhuo Wang, Feng Gao, Xiaofeng Sun   +4 more
openalex   +2 more sources

Innovative Design and Fast Iterative Manufacturing of Micro-Turbojet Engines at Low Cost

Highlights in Science, Engineering and Technology
The turbojet is the foundation of the gas turbine engine, which combines knowledge of fluid dynamics, thermodynamics, heat transfer, mechanical design, manufacturing, and jet propulsion. This paper describes in detail the inspiration source, design process, fluid dynamics analysis, manufacturing steps, ignition test method and test process of small jet
Yiding Zhang, Yitong Zhang
openalex   +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, Li S, Zhang K, Zhang W, Liu D, Fang W, Zhai Y, Lei K, Zhang L, Chen H, Xu T.   +10 more
europepmc   +2 more sources

Prediction of performance characteristics of an experimental micro turbojet engine using machine learning approaches

Energy
The continuous growth of the world population leads to an increase in energy demand, which poses challenges to sustainable energy supply. Predicting aviation engine performance according to its own characteristics is very important in ensuring sustainability.
Håkan Aygün, Ömer Osman Dursun, Suat Toraman   +2 more
exaly   +3 more sources

COMPUTATIONAL INVESTIGATION OF NOZZLE FLOWFIELD IN A MICRO TURBOJET ENGINE AND ITS SCALING CHARACTERISTICS [PDF]

Journal of Computational Fluids Engineering, 2017
Seong Man Choi
exaly   +2 more sources

Thermodynamics, Environmental and Sustainability Impacts of a Turbofan Engine Under Different Design Conditions Considering Variable Needs in the Aviation Industry. [PDF]

Glob Chall
Thermodynamic analysis is applied to the kerosene fuelled high by‐pass turbofan (HBP‐TF) engine to assess entropy, exergy, environmental and sustainability metrics for different design variables. As a novelty, entropic improvement potential index for turbomachinery components and specific irreversibility production for the whole engine are computed ...
Aygun H, Sheikhi MR, Caliskan H.
europepmc   +2 more sources