Results 41 to 50 of about 435 (178)

Degradation Prediction of Proton‐Exchange Membrane Fuel Cell Tested Under Static and Quasi‐Dynamic Operating Conditions

open access: yesFuel Cells, Volume 26, Issue 3, June 2026.
ABSTRACT The viability and extended lifetime of proton‐exchange membrane (PEM) fuel cells are essential to enable hydrogen electric aviation. Their reliability, that is, the ability to maintain stable performance over long operational periods under varying environmental and load conditions, is a critical factor for their adoption in aviation systems ...
Matthew Georgio Dekkers   +2 more
wiley   +1 more source

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

open access: yesINCAS 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   +2 more
doaj   +1 more source

Advances in Atmospheric Water Harvesting Hydrogels: A Review of Material Design, System Integration, and Practical Applications

open access: yesSmall Structures, Volume 7, Issue 6, June 2026.
This review presents a multiscale optimization framework for hydrogel‐based sorbent atmospheric water harvesting (SAWH), integrating material chemistry, structural engineering, and device‐level strategies. It details how synergy between absorption, desorption, and thermal management leads to efficient, sustainable atmospheric water harvesting and ...
Ting‐Ting Li   +3 more
wiley   +1 more source

Converting an automobile turbocharger into a micro gas turbine [PDF]

open access: yesE3S Web of Conferences, 2019
A low cost micro turbojet made by using an automobile turbocharger and other automobile components for research is presented in this paper. The machine comprises mainly of three main assemblies, the compressor & turbine assembly, the combustion chamber ...
Butt M Usman
doaj   +1 more source

Investigating Breathing Dynamics of a 110 kV Oil‐Immersed Transformer Using Thermal‐Fluid‐Structure Interaction Modelling

open access: yesHigh Voltage, Volume 11, Issue 3, Page 668-680, June 2026.
ABSTRACT The breathing system of an oil‐immersed transformer is of vital importance for maintaining equilibrium between internal and external pressures, with any malfunction potentially disrupting the transformer's stable operation. This study develops a thermal–fluid–structure interaction (TFSI) model to simulate the breathing phenomenon in a 110 kV ...
Lujia Wang   +5 more
wiley   +1 more source

Analysis of the influence of the nacelle on the thrust force of the fan circuit of the turbo-fan attachment

open access: yesАвіаційно-космічна техніка та технологія, 2023
The subject of this study is the interaction between the engine nacelle of a three-circuit turbojet engine and a turbofan attachment. The object of this research is a model of a cylindrical engine nacelle and a fan part of the impeller of a turbofan ...
Roman Maiboroda
doaj   +1 more source

Cruising Together: How the Europeans Tipped the Scales for the Ground‐Launched Cruise Missile

open access: yesGlobal Policy, Volume 17, Issue 3, Page 506-511, June 2026.
ABSTRACT In the 1970s, the United States adopted the ground‐launched cruise missile (GLCM) despite opposition from the military and the lack of an established military requirement. The case is, thus, at odds with common models of military innovation that rely on military utility and organizational interests for their explanatory power.
Tim Thies
wiley   +1 more source

Task co‐use and product improvement: An organization design perspective

open access: yesStrategic Management Journal, Volume 47, Issue 5, Page 1433-1466, May 2026.
Abstract Research Summary Co‐using tasks—using the same task to produce more than one product—promises economies of scope. However, task co‐use also ties products together, changing a firm's task network by introducing cross‐product interdependencies. In light of these interdependencies, we identify an unrecognized downside of task co‐use for product ...
Johanna Glauber, Tobias Kretschmer
wiley   +1 more source

The Development of the Whittle Turbojet [PDF]

open access: yesVolume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery, 1997
Sir Frank Whittle passed away on August 8, 1996 at the age of 89, in Maryland. His work in developing the turbojet can truly be said to represent one of the greatest mechanical engineering achievements in the last 70 years. The development of the turbojet demanded that Whittle face almost insurmountable technical and institutional challenges.
openaire   +1 more source

Remaining Useful Life (RUL) Prediction Methods for Machine Health Estimation and Fault Diagnosis: A Comprehensive Review of Latest Techniques and Future Prospects

open access: yesEngineering Reports, Volume 8, Issue 4, April 2026.
A comprehensive review of model‐based, data‐driven, and hybrid approaches for Remaining Useful Life (RUL) prediction, emphasizing their role in predictive maintenance, fault diagnosis, and enhancing industrial reliability. ABSTRACT This paper aims to provide a state‐of‐the‐art review of the most recent Remaining Useful Life (RUL) prediction methods ...
Arslan Ahmed Amin   +4 more
wiley   +1 more source

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