Results 11 to 20 of about 163 (134)

Eddy Current Sensor System for Blade Tip Clearance Measurement Based on a Speed Adjustment Model [PDF]

Sensors, 2019
Blade tip clearance (BTC) measurement and active clearance control (ACC) are becoming crucial technologies in aero-engine health monitoring so as to improve the efficiency and reliability as well as to ensure timely maintenance. Eddy current sensor (ECS)
Jiang Wu, Bin Wen, Yu Zhou, Qi Zhang, Shuiting Ding, Farong Du, Shuguang Zhang   +6 more
doaj   +2 more sources

Optimum Design of Injection Ring for Micro-turbojet Engine

Hangkong gongcheng jinzhan, 2018
The fuel injection ring is an important part of the micro-turbojet engine. The uniformity of fuel injection quantity determines the uniformity of the temperature field in the combustion chamber.
Tan Kun, Wang Yun, Zhang Fei, Zhang Yangyang, Li Junjie   +4 more
doaj   +2 more sources

Experimental Investigation of Particulate Number Measurement Methodology for Micro-Turbojet Engine Emissions

Aerospace
Increasing 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 ...
Zheng Xu, Minghua Wang, Guangze Li, Xuehuan Hu, Pengfei Yang, Meiyin Zhu, Bin Zhang, Liuyong Chang, Longfei Chen   +8 more
doaj   +3 more sources

Experimental Investigation of a Micro Turbojet Engine Chevrons Nozzle by Means of the Schlieren Technique

Inventions, 2023
In connection with subsonic jet noise production, especially regarding the hot jet from a micro turbojet engine, we encountered a lack of recent high-resolution data in the literature describing the flow field using experimental validation through ...
Grigore Cican, Mihnea Gall, Alina Bogoi, Marius Deaconu, Daniel Eugeniu Crunțeanu   +4 more
doaj   +2 more sources

A denoising method for aeroengine gas path electrostatic signal of low signal-to-noise ratio based on IMFs optimized reconstruction and wavelet threshold [PDF]

Scientific Reports
Electrostatic monitoring technology for aero-engines has demonstrated considerable capability in early fault warning. However, raw electrostatic signals often contain significant noise and exhibit low signal-to-noise ratios, making denoising essential to
Chaoying Yan, Yan Liu, Feng Lu
doaj   +2 more sources

Investigation of thrust vector angle control law based on micro-turbojet engine

AIP Advances, 2022
The fluid thrust vectoring nozzle has a fixed profile, few moving parts, and lightweight structure, providing effective flight control for high maneuvering aircraft. The nonlinear control law of the jet deflection angle is one of the critical problems of
Shaoqing Chi, Yunsong Gu, Dongsheng Gong, Linkai Li   +3 more
doaj   +2 more sources

Self-tuning speed and flow control of micro turbojet engines based on an improved evolutionary strategy

Automatika
At present, the controllable parameters of micro turbojet engines in engineering applications are mainly speed-fuel flow (hereinafter referred to as flow) control, in which closed-loop proportional–integral–derivative (PID) control is mostly used to ...
Q. Gao, Jiahao Li, Yuxin Zhang
doaj   +3 more sources

Performance and Emissions Assessment of a Micro-Turbojet Engine Fueled with Jet A and Blends of Propanol, Butanol, Pentanol, Hexanol, Heptanol, and Octanol

Fire
This study examines the impact of alcohol blends on the performance and emissions of aviation micro-turbojet engines. Thus, propanol, butanol, pentanol, hexanol, heptanol, and octanol were tested at 10%, 20%, and 30% concentrations and mixed with Jet A ...
Grigore Cican, Valentin Silivestru, Radu Mirea, Sibel Osman, Florin Popescu, Olga Valerica Sapunaru, Razvan Ene   +6 more
doaj   +3 more sources

A Study of an Integrated Analysis Model with Secondary Flow for Assessing the Performance of a Micro Turbojet Engine

Applied Sciences
The objective of this study is to implement a more realistic integrated analysis model for micro gas turbines by incorporating secondary flow and combustion efficiency into the existing model, which includes main engine components such as the compressor ...
DongEun Lee, Heeyoon Chung, Young Seok Kang, Dong-Ho Rhee   +3 more
doaj   +3 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, Kadir Donmez, Oğuzhan Şahin   +2 more
exaly   +3 more sources