Results 131 to 140 of about 34,611 (247)
Combustion instability coupling with feed system acoustics [PDF]
High frequency combustion instability has recently been observed by Rocketdyne in a 40K thrust methane/LOX combustion chamber. The oscillations had frequencies as high as 14,000 Hz with pressure amplitudes in the LOX dome of 500 psi at a chamber ...
Breisacher, Kevin J., Priem, Richard J.
core +1 more source
Study of alternative geometries for fluidic oscillators by means of computational fluid mechanics [PDF]
, 2015 Se estudiará el fllujo en el interior de osciladores fluídicos mediante el uso de un código comercial de Mecánica de Fluidos Computacional.Se estudiarán diferentes diseños y se compararán sus rendimientos.1. Documentación y estudio del estado del arte. 2.
Baucells Fuster, Xavier
core
Stability of Lead‐Free Perovskite Solar Cells
Advanced Sustainable Systems, Volume 10, Issue 3, March 2026.This review article discusses the very recent status of stability of lead‐free perovskite solar cells, possible challenges, fabrication techniques, the degradation mechanism of lead‐free PSCs affecting stability, possible causes hindering the simultaneous improvement of efficiency and stability of lead‐free PSCs, potential outlook, and future research ...
Pranta Barua +4 more
wiley +1 more source
Overview of Combustion Instabilities in Liquid-Propellant Rocket Engines [PDF]
, 1995 N/
Culick, Fred E. C., Yang, Vigor
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Edible Pneumatic Battery for Sustained and Repeated Robot Actuation
Advanced Science, Volume 13, Issue 15, 13 March 2026.This work presents an edible energy source and valve system to power soft, pneumatically driven edible robots. A chemical reaction between sodium bicarbonate and citric acid generates carbon dioxide gas, and a pressure‐triggered edible valve enables self‐repetitive motion of the edible actuator.
Bokeon Kwak +5 more
wiley +1 more source
Effect of Injector Recess Depth on Flame Structure of Single Injector in Air Heater
AerospaceTo investigate the influence of injector recess depth on the combustion characteristics of air heaters, high-speed shadowgraph imaging technology combined with numerical simulation was employed.
Ke Wang, Chibing Shen, Bo Fan
doaj +1 more source
Advanced Science, Volume 13, Issue 14, 9 March 2026.Tracing the evolution from structural regulation to multifunctional integration, this paper systematically analyzes modification strategies for carbon‐based electrodes. It evaluates how element doping, surface functionalization, and composite material design affect the electrode performance, and offers perspectives on future applications and challenges
Yunlei Wang +4 more
wiley +1 more source
Advanced Energy and Sustainability Research, Volume 7, Issue 3, March 2026.Hydrogen‐powered aviation offers a transformative pathway to zero‐emission flight by eliminating in‐flight CO2 emissions. Key considerations include propulsion systems (fuel cells and hydrogen combustion), cryogenic storage and insulation challenges, infrastructure and cost barriers, and supply‐chain constraints.
Mubasshira +4 more
wiley +1 more source
ChemCatChem, Volume 18, Issue 6, 27 March 2026.Alkali metal doping enhanced the catalytic performance of SrTiO3 for glycerol carbonate synthesis. Among the tested catalysts, the 10% Rb‐doped SrTiO3 exhibited the highest catalytic activity. This catalyst could be reused without substantial loss of activity and was applicable to various combinations of diols and alkyl carbonates.
Takeshi Aihara +3 more
wiley +1 more source
Engineering Reports, Volume 8, Issue 3, March 2026.A multiphysics finite‐element model is developed to elucidate magnetically tunable electrochemical hydrogen sensing in a Cs/GO/Fe3O4/PANi hydrogel nanocomposite. The framework couples hydrogen diffusion, electrochemical kinetics, charge transport, and superparamagnetic Fe3O4 alignment to predict sensor performance.
Rima Heider Al Omari +8 more
wiley +1 more source