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Review of Alternative Sustainable Fuels for Hybrid Rocket Propulsion

open access: yesAerospace, 2023
Hybrid rockets using specific oxidizer–fuel combinations are considered a green alternative to current propulsion systems, as they do not release very toxic or polluting exhausts, but only much less harmful substances such as carbon monoxide/dioxide and ...
Francesco Barato
doaj   +3 more sources

Alternative Fuels for Internal Combustion Engines

open access: yesEnergies, 2020
The recent transport electrification trend is pushing governments to limit the future use of Internal Combustion Engines (ICEs). However, the rationale for this strong limitation is frequently not sufficiently addressed or justified. The problem does not
Jorge Martins, F. P. Brito
doaj   +3 more sources

Measurements of the laminar flame speed of premixed, hydrogen-air-argon stagnation flames

open access: yesApplications in Energy and Combustion Science, 2021
As the foundation for detailed hierarchical combustion chemistry models, the accuracy of the hydrogen oxidation mechanism is paramount to achieve truly predictive models.
Antoine Durocher   +3 more
doaj   +1 more source

Marine Demonstration of Alternative Fuels on the Basis of Propulsion Load Sharing for Sustainable Ship Design

open access: yesJournal of Marine Science and Engineering, 2023
As the IMO aims to reduce greenhouse gas emissions from ships by more than 50% by 2050 compared to 2008, the paradigm of the shipbuilding and shipping industries is changing.
Hyungwon Shim   +4 more
doaj   +1 more source

Hydrodynamic effect of nanosecond repetitively pulsed discharges produced throughout a laminar stagnation flame

open access: yesApplications in Energy and Combustion Science, 2023
Plasma-assisted combustion has the potential to improve flame stability and combustion performance. Among all the different types of plasma source, nanosecond repetitively pulsed (NRP) discharges have received a lot of attention since they can produce ...
Julien Lambert   +3 more
doaj   +1 more source

Preliminary Feasibility Study of a Magnetic Levitation Rotor Sail for Coastal Area Operations

open access: yesJournal of Marine Science and Engineering, 2023
The continuous strengthening of environmental regulations is expected to have a significant impact on the vessel operations of shipping companies. Each country must reduce greenhouse gas emissions from ships operating in domestic coastal areas to meet ...
Kwangseok Lee   +4 more
doaj   +1 more source

Dynamical Sliding Mode Control for Robust Dynamic Positioning Systems of FPSO Vessels

open access: yesJournal of Marine Science and Engineering, 2022
The conventional proportional derivative (PD) control algorithm with appropriate gain scheduling is generally applied to a dynamic positioning (DP) system. However, finding appropriate gains through gain scheduling makes the DP system more complicated. A
Seongpil Cho   +2 more
doaj   +1 more source

Alternative fuels in aviation [PDF]

open access: yesCEAS Aeronautical Journal, 2014
During the last years, the aviation sector has been looking into alternatives to kerosene from crude oil, to combat climate change by reduction of greenhouse gas (GHG) emissions and to ensure security of supply at affordable prices. The efforts are also a reaction to commitments and policy packages.
Braun-Unkhoff, Marina, Riedel, Uwe
openaire   +2 more sources

Machine learning techniques to increase the performance of indirect methane quantification from a single, stationary sensorSynopsis

open access: yesHeliyon, 2022
Researchers are searching for ways to better quantify methane emissions from natural gas infrastructure. Current indirect quantification techniques (IQTs) allow for more frequent or continuous measurements with fewer personnel resources than direct ...
Robert S. Heltzel   +4 more
doaj   +1 more source

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