Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"alternative jet fuels"”.
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Development of a database for alternative jet fuels
… the development and benefits of a database for alternative jet fuels. Data on alternative jet fuels, conventional jet fuels and blends of alternative and conventional jet fuels were collected from the Air Force Research Lab, Metron Aviation and Petroleum Quality Information System. This data was …
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Physicochemical and performance study of next generation alternative jet fuels
… the physicochemical properties of aviation fuels and their impact on combustion performance in relevant applications for existing and emerging engine architecture with a particular focus on next generation alternative jet fuels (AJF). The Federal Aviation Administration (FAA) Center of …
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Impact of alternative jet fuels on gas turbine combustion systems
… replacement of conventional, petroleum-derived jet fuels with alternative jet fuels plays an important role in climate change mitigation, economic security, and energy independence. To ensure that alternative jet fuels can replace conventional jet fuels without engine modification, new fuels …
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Surrogate modeling of alternative jet fuels for study of autoignition characteristics
… capabilities of autoignition characteristics for alternative jet fuels. Computational simulation results are compared with published data from experimental rapid compression machine (RCM) tests for conventional jet fuel. Evaluation of these surrogate models aids in identifying differences in …
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Life-cycle assessment of Greenhouse Gas emissions from alternative jet fuels
… for this work was the potential impact of alternative jet fuel use on emissions that contribute to global climate change. This work focused on one specific aspect in examining the feasibility of using alternative jet fuels - their life-cycle Greenhouse Gas (GHG) emissions relative to …
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Ignition delay study of next generation alternative jet fuels in a rapid compression machine
Alternative fuels have been widely and actively investigated recently to alleviate an impending energy crisis. Rising environmental, economical, and political concerns requires employments of alternative sources of energy other than conventional fossil fuels. Alternative aviation fuels from diverse …
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Investigation of alternative jet fuels in gas turbine combustion systems using x-ray radiography
The development of alternatives to petroleum-derived jet fuels is essential for assisting in climate change mitigation and providing economic security and energy independence within industries that utilize jet fuels. It is important that jet fuels derived from alternative sources can be used in …
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Life cycle assessment of greenhouse gas emissions and non-CO₂ combustion effects from alternative jet fuels
… non-CO 2 combustion effects from conventional jet fuel and synthetic paraffinic kerosene (SPK). The research expands upon the work of Wong (2008) by examining Fischer-Tropsch jet fuel from coal and biomass, and hydroprocessed renewable jet (HRJ) fuel from rapeseed, jatropha, algae and …
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Scaling air quality effects from alternative jet fuel in aircraft and ground support equipment
… This thesis examines the potential of two jet fuel types, ultra low sulfur jet fuel and synthetic paraffinic kerosene, to reduce aviation's contribution to ambient particulate matter concentrations. Scaling factors were developed for airport criteria pollutant emissions to model alternative …
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Flame Studies on Conventional, Alternative, and Surrogate Jet Fuels, and Their Reference Hydrocarbons
… and extinction of various liquid hydrocarbon fuels, including conventional and alternative jet fuels, surrogate fuels, and their reference hydrocarbon components. The laminar flame speeds and extinction stretch rates are experimentally determined by using a twin-flame counterflow setup …
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Non-CO₂ environmental impacts of transportation fuel use and production
… the lifecycle greenhouse gas (GHG) emissions of fuels derived from salicornia and crude oil, respectively. Nine LUC scenarios exhibit a cooling effect, the largest of which is for the replacement of tropical rainforest with soybean cultivation. This corresponds to -161 gCO₂e/MJ, or -28% and -178% …
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Assessing environmental benefits and economic costs of aviation environmental policy measures
… of methane emissions from the processing of alternative jet fuels, and comparison and validation of APMT results with external sources. This work also discusses the importance of uncertainty assessment for understanding the sensitivity of policy analysis outcomes to input and model parameter …
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Environmental and economic tradeoffs of feedstock usage for liquid fuels and power production
… 1) assessing the energy return on investment for alternative jet fuels, and 2) quantifying the tradeoffs associated with the aviation and non-aviation use of agricultural residues. We quantify energy return on energy investment (EROI) as one metric for the sustainability of alternative jet fuel …
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Simulating Extinction and Blow-off in Kerosene Swirl Spray Flames
Alternative jet fuels are being developed for use with existing jet engines, however there are still knowledge gaps concerning how unusual compositions and properties of these fuels will affect combustion performance. Physical and chemical processes leading to problematic engine stability phenomena …
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Autoignition and combustion chemistry of kerosene type fuels and components
… the combustion of conventional (petroleum-based) jet fuels, alternative (synthetic or bio-derived) fuels, and pure fuel components at low combustion temperatures (500 – 725K) and under stoichiometric to fuel lean conditions. These conditions are of interest because they occur at the edges of …