Results 231 to 240 of about 11,511 (277)

Controller Design for Micro Turbojet Engine

2020 12th International Conference on Electrical Engineering (ICEENG), 2020
Modern turbojet engines are controlled using digital controllers. First of all, the micro turbojet engine discrete model is identified. System identification technique utilized real data obtained from jet cat P200sx engine running experiments. Digital PID controllers are mostly used for controlling these engines.
Ahmed M. shehata, Mahmoud Ashry, Mohamed K. khalil   +2 more
openaire   +2 more sources

Availability Analysis of a Military Turbojet Engine

Journal of Failure Analysis and Prevention, 2019
Availability analysis has been performed on a military turbojet engine using commercially available reliability software. Failure data of the engine over a period of 7 years are considered. The failures/defects are categorized, and then analysis is performed for the major defects.
R. Ragupathy, R. K. Mishra
openaire   +2 more sources

Reduction of Turbojet Engine Noise

2004
The urgency of the problem of jet noise reduction has been rising again at the present stage of aircraft technology development. The main reasons are the following. The studies of attenuation of turbo-machine noise have demonstrated that the jet is one of the main noise sources even in engines with high by-pass ratios.
Ye. V. Vlasov, A. S. Ginevsky, R. K. Karavosov   +2 more
openaire   +2 more sources

Development study of a precooled turbojet engine

Acta Astronautica, 2010
Abstract A precooled turbojet engine has been developed by JAXA used for the hypersonic airplane and spaceplane. The subscale engine named “S-engine” whose thrust and weight are about 1.2 kN and 100 kg was designed, fabricated and tested. The components and the system firing tests under the sea-level-static condition were successfully conducted.In ...
Tetsuya Sato, Keiichi Okai Daisaku Masaki, Shujiro Sawai, Takayuki Kojima, Hiroaki Kobayashi, Motoyuki Hongo, Hideyuki Taguchi, Kazuhisa Fujita, Katsuyoshi Fukiba   +8 more
openaire   +2 more sources

Variable Structure Control of a Turbojet Engine

1986 American Control Conference, 1986
We study the fuel control problem of a single-spool turbojet engine. A transfer function approximation method is utilized to identify linear models about operating points. Then, a sliding mode control is developed to regulate the fuel flow so that the engine speed and temperature are within their physical constraints, based on the identified linear ...
Cheng-Wu Chen, Chin-Yu Chao, Bor-Chyun Wang   +2 more
openaire   +2 more sources

Exergetic and Environmental Analyses of Turbojet Engine

2019
This study deals with exergetic and environmental analyses of turbojet engine used on the military training aircrafts. In the analysis, the engine data measured in the Engine Test Cell at First Air Maintenance and Factory Directorate of Turkish Air Forces in Eskisehir, Turkey are utilized.
Balli, Ozgur, Yuksel, Burak, Hepbasli, Arif, Atalay, Halil, Gunerhan, Huseyin   +4 more
openaire   +3 more sources

Advanced methods of turbojet engines' control

2010 IEEE 8th International Symposium on Applied Machine Intelligence and Informatics (SAMI), 2010
The article deals with modern concepts of control systems used in turbojet engines. We specifically aim on description of control systems using methods and concepts of artificial intelligence, which can bring a new quality in terms of operation and safety of turbojet engines' operation.
J. Judicak, Rudolf Andoga, Ladislav Madarász, Ladislav Fozo   +3 more
openaire   +2 more sources

Derivation of Correlations for Small Turbojet Engines

Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Manufacturing, Materials and Metallurgy; Microturbines and Small Turbomachinery, 2008
When analysing the performance of aero-engines with incomplete input data, it is often necessary to estimate the value of the missing parameters. This paper describes the work completed to develop correlations linking various turbojet parameters using a database of nearly 100 data points.
J. E. Donald Gauthier, Robert Stowe
openaire   +2 more sources

Calculation of Windmilling Characteristics of Turbojet Engines

Journal of Engineering for Power, 1981
The operation of a turbojet engine under windmilling conditions was analyzed and the relationship of engine speed and airflow has been derived. Replacing the efficiencies of compressor and turbine by a total pressure loss coefficient, the author was able to obtain the equations for matching the engine components and the universal curve of windmilling ...
openaire   +2 more sources

TURBOJET ENGINE ANALYZER DESIGN STUDY

1963
Abstract : Methods of determining the condition of jet engines through measurement of performance sensitive parameters are outlined. The measurements required, test procedures, data processing, interpretation of results, and tentative limits are proposed.
openaire   +2 more sources