Results 31 to 40 of about 11,511 (277)

Exergoenvironmental, environmental impact and damage cost analyses of a micro turbojet engine (m-TJE)

Energy Reports, 2022
This study presents a comprehensive investigation of the emission impact, environmental damage cost, exergoenvironmental and life cycle assessment (LCA) analyses of a micro turbojet engine (m-TJE) utilized on Unmanned Air Vehicle (UAV) for four different
Ozgur Balli, Utku Kale, Dániel Rohács, T. Hikmet Karakoc   +3 more
doaj   +1 more source

Evaluation of Turbojet Engine with Water Injection for Aircraft Use as Controlled Object

Aerospace
This study addresses an under-represented topic in turbojets’ design—the characterizing of this type of engine as an entity subject to automatic control.
Alexandru-Nicolae Tudosie, Mihai Lungu
openalex   +3 more sources

Comparative Performance Metric Assessment of A Military Turbojet Engine Utilizing Hydrogen And Kerosene Fuels Through Advanced Exergy Analysis Method

Energies, 2020
This study dealt with evaluating the (J85-GE-5H) military turbojet engine (TJE) in terms of exergetic and advanced exergetic analyses at Military (MIL) and Afterburner (AB) process modes by utilizing kerosene (JP-8) and hydrogen (H2) fuels. First, exergy
Burak Yuksel, Ozgur Balli, Huseyin Gunerhan, Arif Hepbasli   +3 more
doaj   +1 more source

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, Kenya Harada, Hiroaki Kobayashi, Motoyuki Hongoh, Daisaku Masaki, Shunsuke Nishida   +5 more
doaj   +1 more source

Analyzes regarding aviation fuels parameters use on jet engines [PDF]

INCAS Bulletin
The properties of the fuels determine the quality of the combustion process and implicitly the performance of the turbojet engine. The optimal heterogeneous combustion process of an aviation fuel is ensured by a stoichiometric ratio (fuel/fuel), a ...
Vasile PRISACARIU, Irina ANDREI, Eduard MIHAI   +2 more
doaj   +1 more source

Research on Combustion Chamber Structure Improvement and Ignition System of Missile Turbojet Engine for Diesel Fuel

Tehnički Vjesnik, 2018
To meet the conditions of diesel ignition, this paper presents several structural improvements of a small missile turbojet engine for diesel fuel. The engine starts motor-assisted, and its fuel is ignited by silicon nitride ceramic ignitor.
Lei Qiu, Xi Zeng, Shiming Ji, Fengfei Xi, Wenbin Qiu, Qianqian Zheng   +5 more
doaj   +1 more source

Evolutionary auto-design for aircraft engine cycle

Complex & Intelligent Systems, 2023
Traditional engine cycle innovation is limited by human experiences, imagination, and currently available engine component performance expectations. Thus, the engine cycle innovation process is quite slow for the past 90 years. In this work, we propose a
Xudong Feng, Zhening Liu, Feng Wu, Handing Wang   +3 more
doaj   +1 more source

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

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 ...
Qiang Gao, Jiahao Li, Yuxin Zhang
openalex   +3 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
openalex   +3 more sources

Resource reallocation across successive systemic innovations: How Rolls‐Royce shaped the evolution of the turbojet, turboprop, and turbofan

Strategic Management Journal, EarlyView.
Abstract Research Summary Despite the importance of resource reallocation in shaping a variety of strategic outcomes, strategy scholars have paid only limited attention to the processes by which firms reallocate their resources across successive systemic innovations.
Gino Cattani, Mariano Mastrogiorgio, Giuseppe Carignani   +2 more
wiley   +1 more source