Results 31 to 40 of about 29,920 (238)

Characterization of Structure, Properties, and Energetic Performance of a 1:1 Ammonium Dinitramide‐3,4‐Diaminofurazan Cocrystal

Propellants, Explosives, Pyrotechnics, EarlyView.
Ammonium dinitramide (ADN) and 3,4‐Diaminofurazan (DAF) form a 1:1 energetic cocrystal. We report its crystal structure and spectroscopic signature and evaluate thermal stability, decomposition behavior, hygroscopicity, and combustion properties. Propellant performance calculations benchmark the material against guanylurea dinitramide (GuDN) and ...
Peter Schultz, Uwe Schaller, Thomas Heintz   +2 more
wiley   +1 more source

Combustion of Date Stone and Jojoba Solid Waste in a Hybrid Rocket-like Combustion Chamber

Aerospace
The performance of two solid biomass wastes, date stone and jojoba solid waste, was experimentally examined for their potential application in combustion and propulsion systems.
Saleh B. Alsaidi, Jeongmoo Huh, Mohamed Y. E. Selim   +2 more
doaj   +1 more source

Method of transient simulation of combustion processes in a low-thrust rocket engine operating on gaseous hydrogen and oxygen

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2016
The article describes a method of simulating combustion processes in a low-thrust rocket engine. The engine operates on gaseous propellants: oxygen and hydrogen. Transient simulation was performed using ANSYS CFX software.
V. M. Zubanov, L. S. Shabliy, D. V. Stepanov   +2 more
doaj   +1 more source

Rocket engine injector Patent [PDF]

, 1968
Rocket engine injector orifice to accommodate changes in density, velocity, and pressure, thereby maintaining constant mass flow rate of propellant into rocket combustion ...
Stein, S.
core   +1 more source

Impact of Environmental Exposure on Infant Sleep : The Exposome Approach

Journal of Sleep Research, EarlyView.
This review explores how exposure to environmental pollutants during the first 1000 days of life may affect infant sleep. Evidence suggests potential links between chemical exposures and sleep disturbances, underscoring the need for more research on early‐life vulnerability and the impact of pollutants in air, diet, and breast milk.
Zeina Halbouty, Debora Tuka, Erwan Stephan‐Blanchard, Veronique Bach, Pierre Tourneux, Elodie Haraux, Karen Chardon   +6 more
wiley   +1 more source

Innovative Cooling for Rocket Combustion Chambers [PDF]

, 2020
Abstract Transpiration cooling in combination with permeable ceramic-matrix composite materials is an innovative cooling method for rocket engine combustion chambers, while providing high cooling efficiency as well as enhancing engine life time as demanded for future space transportation systems.
Jonas Peichl, Andreas Schwab, Markus Selzer, Hannah Böhrk, Jens von Wolfersdorf   +4 more
openaire   +1 more source

Microspherules Formed by Lightning Strikes

Meteoritics &Planetary Science, EarlyView.
Abstract Natural microspherules are formed by high‐temperature processes and are present throughout the geologic record to the present day. We report the discovery of large numbers of microspherules recovered from a rock pavement in the Pilbara region, Western Australia.
M. R. Boyd, M. J. Genge, A. G. Tomkins
wiley   +1 more source

Fighting in a warming world: The emergence of climatic considerations in the conduct of hostilities under international humanitarian law

Review of European, Comparative &International Environmental Law, EarlyView.
Abstract This article seeks to assess the extent to which climatic considerations may be integrated into international humanitarian law (IHL). With evidence of significant greenhouse gas emissions from military actions in conflicts such as Gaza and Ukraine, the article highlights the climate impacts of armed conflict, showing how military activities ...
Mario Pasquale Amoroso
wiley   +1 more source

The Future of Hydrogen‐Powered Aviation: Technologies, Challenges, and a Strategic Roadmap for Sustainable Decarbonization

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, Md Mahbubur Rahman, Karib Hassan Khan, Md Nizam Uddin, Dewan Hafiz Nabil   +4 more
wiley   +1 more source

A Review of Recent Developments in Hybrid Rocket Propulsion and Its Applications

Aerospace
This paper extensively reviews hybrid rocket propulsion-related activities from combustion engine designs to launch tests. Starting with a brief review of rocket propulsion development history, a comparison among the three bi-propellant rocket propulsion
Shih-Sin Wei, Meng-Che Li, Alfred Lai, Tzu-Hao Chou, Jong-Shinn Wu   +4 more
doaj   +1 more source