Results 51 to 60 of about 19,118 (298)

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

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   +1 more source

Numerical Investigations of the Aerothermal Performance of Modern Turbine Blade Tip Geometries at Design and Off‐Design Conditions and Under Stationary and Moving Shroud

Heat Transfer, Volume 54, Issue 5, Page 3193-3207, July 2025.
ABSTRACT High‐pressure turbine blade tips operate under extreme thermal stress, generating significant aerodynamic losses that must be continually optimized to improve engine efficiency and durability. This study uses computational fluid dynamics (CFD) to investigate the aerodynamic and thermal behavior of advanced turbine blade tip configurations ...
Kheir‐Eddine Arrif, Zakaria Mansouri, Salaheddine Azzouz   +2 more
wiley   +1 more source

Methods and Algorithms of Turbojet Engines Thrust Parameters Control Unerroric

Journal of Physics: Conference Series, 2021
This report shows a real way for solving the problem of turbojet engine thrust parameters control in flight. The purpose of the research is the formalization of the digital methods and its algorithms for turbojet engines thrust parameters control ...
A. Burova
semanticscholar   +1 more source

Experimental Analysis on the Operating Line of Two Gas Turbine Engines by Testing with Different Exhaust Nozzle Geometries

Energies, 2023
This paper presents a special analysis study about the gas turbine operating line, and an overall description of a gas turbines project, based on experimental data from two particular applications, in order to convert two different types of aero engines ...
Razvan Marius Catana, Gabriel Petre Badea   +1 more
doaj   +1 more source

Automation of Predictive Maintenance: An Experimental Framework for Aircraft Landing Gear

Engineering Reports, Volume 7, Issue 6, June 2025.
Modern aircraft generate vast flight data, yet limited domain expertise hinders widespread predictive maintenance model development. This study compares traditional and automated machine learning (AutoML) models for Airbus landing gear health monitoring, showing AutoML's potential to streamline workflow, improve accessibility, and enable non‐experts to
Izaak Stanton, Kamran Munir, Ahsan Ikram, Murad El‐Bakry   +3 more
wiley   +1 more source

Reduction of nitric oxide emissions from a combustor [PDF]

, 1980
A turbojet combustor and method for controlling nitric oxide emissions by employing successive combustion zones is described. After combustion of an initial portion of the fuel in a primary combustion zone, the combustion products of the primary zone are
Craig, R. A., Pritchard, H. O.
core   +1 more source

Design, Synthesis, and Characterization of Lightweight Medium/High Entropy Alloys—A Review

Engineering Reports, Volume 7, Issue 5, May 2025.
Lightweight high‐entropy alloys (HEAs) offer exceptional properties like low density, high strength, and thermal stability, making them ideal for aerospace and automotive applications. The paper explores their design, synthesis, and characterization, emphasizing their potential for high‐performance application in aerospace and automotive industries ...
Fainah Madewu, Nicholus Malatji, Mxolisi Brendon Shongwe, Tawanda Marazani, Lehlogonolo Rudolf Kanyane   +4 more
wiley   +1 more source

Orbiter/launch system [PDF]

, 1981
The system includes reusable turbojet propelled booster vehicles releasably connected to a reusable rocket powered orbit vehicle. The coupled orbiter-booster combination takes off horizontally and ascends to staging altitude and speed under booster power
Jackson, L. R., Martin, J. A., Small, W. J., Weidner, J. P.   +3 more
core   +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