Results 241 to 250 of about 763,082 (323)

Research on new integral squeeze film damper vibration control of micro turbojet engine at high speed

International Journal of Turbo & Jet-Engines, 2022
In view of the problem that the vibration of the centrifugal impeller of the compressor exceeds the standard when a micro turbojet engine crosses the first-order critical speed, this research proposes a vibration control technology for the engine rotor ...
Wenhao Wang, Lidong He, Yangliu Sun, Zijian Wang, Hua Zhang, Qiaoqiao Bao, Xingyun Jia, Hua-jun Dong   +7 more
semanticscholar   +1 more source

Fully Coupled Turbojet Engine Computational Fluid Dynamics Simulations and Cycle Analyses Along the Equilibrium Running Line

, 2021
This work presents fully coupled computational fluid dynamics (CFD) simulations and thermodynamic cycle analyses of a small-scale turbojet engine at several conditions along the equilibrium running line.
A. Briones, A. Caswell, B. Rankin
semanticscholar   +1 more source

Optimization and off-design calculations of a turbojet engine using the hybrid ant colony – particle swarm optimization method

Aircraft Engineering and Aerospace Technology, 2022
Purpose The purpose of the paper is to present component matching and off-design calculations using generic components maps. Design/methodology/approach Multi objective hybrid optimization code is integrated with turbojet function code. Both codes are
A. Pişkin, T. Baklacioglu, O. Turan
semanticscholar   +1 more source

An investigation of euro diesel-hydrogen dual-fuel combustion at different speeds in a small turbojet engine

, 2021
Purpose This study seeks the effect on static thrust, thrust specific energy consumption (TSEC) and exhaust emissions of euro diesel-hydrogen dual-fuel combustion in a small turbojet engine.
I. Akcay, Habib Gürbüz, Hüsameddin Akçay, Mustafa Aldemir   +3 more
semanticscholar   +1 more source

Biofueled Miniature Turbojet Engine (BIOMITE)

50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 2012
The Busemann Advanced Concepts Lab at the University of Colorado Boulder has been researching improvements to small turbojet engines designed for unmanned aerial vehicles for the past three years. The BIOMITE senior design team has continued this tradition by designing adaptations for a commercial-off-the-shelf US Microjet AT-450 turbojet engine to run
Gregory Rancourt, Donald Gipe, Ryan Starkey   +2 more
openaire   +1 more source

Analysis of energy and emission metrics for an experimental turbojet engine by regression approach

Energy Sources, Part A: Recovery, Utilization, and Environmental Effects
The common usage of micro turbojet engines has sparked attention on these systems due to their unique advantages, which enable insight into the characteristics of different scaled turbojet engines. In this study, 930 data points regarding an experimental
Hamza Ezgin, Mehmet Kirmizi, Umit Celik, Hakan Aygun   +3 more
semanticscholar   +1 more source

Turbojet Engine Simulation Using Dymola

42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2006
This work describes the development of a global model of a modified turbojet engine for dynamic behavior simulation. The Modelica language is used for the simulation of this model. A Modelica package was created for the basic components suitable for such models. The model is based on a general turbojet engine and a turbofan engine. The engine component
Jiwu Shen, Konstanty Masiulaniec, Abdollah Afjeh   +2 more
openaire   +1 more source

Energetic, exergetic, exergoeconomic, environmental (4E) and sustainability performances of an unmanned aerial vehicle micro turbojet engine

Aircraft Engineering and Aerospace Technology, 2021
Purpose This study aims to investigate the aviation, energetic, exergetic, environmental, sustainability and exergoeconomic performances of a micro turbojet engine used in unmanned aerial vehicles at four different modes.
Ozgur Balli, Alperen Dalkiran, T. Karakoc   +2 more
semanticscholar   +1 more source

Greenization Factor of a Turbojet Engine

2017
[No abstract available]
Şöhret, Yasin, Karakoç, Tahir Hikmet
openaire   +2 more sources

Afterburners for Turbojet Engines

Journal of the Aeronautical Sciences, 1948
The general problem of pure jet aircraft take-off distance is indicated, and the basic reasons for the excess-thrust deficiency as compared to propeller aircraft are shown. The inherent advantages and disadvantages of several methods of short-duration thrust augmentation, such as fluid injection or rocket boosters, to alleviate the difficulties are ...
openaire   +1 more source