Novel hybrid aircraft propulsion systems using hydrogen, methane, methanol, ethanol and dimethyl ether as alternative fuels

Seyam, Shaimaa; Dinçer, İbrahim; Agelin‐Chaab, Martin

doi:10.1016/j.enconman.2021.114172

Cited by 35 publications

(16 citation statements)

References 35 publications

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“…The performance of a small-scale jet engine was examined by using exergy analysis, with the use of biodiesel and Jet-A fuels. 9 Recent studies 10,11 investigated alternative fuel use as aviation fuels and made a comparison with kerosene-based fuels. Performances were considered good, and results were found like commercial Jet fuel.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation for the different blend ratios of kerosene with diesel on the exergetic performance of a small-scale turbojet engine for UAV missions

Yücer

Nacaklı

2023

International Journal of Engine Research

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The main purpose of this study is to experimentally analyze the exergetic performance of a small-scale turbojet engine that can be used in unmanned aerial vehicles (UAVs) when different blend ratios of kerosene with diesel are necessary, like in extraordinary situations. Comparative analysis was performed to understand the effects of the use of various diesel rates on the jet engine’s performance. To maintain air operations when refueling is required, easy-reachable fuels can help for short but important periods. In cases when there is a need for the use of a quick-reachable fuel in war conditions, diesel may be a suitable fuel. The UAV turbojet engine consists of a radial compressor, an annular combustion chamber, an axial turbine, and a propelling nozzle. The compressor, combustion chamber, turbine, and nozzle were evaluated by using the exergy analysis method. The performance parameters to evaluate the turbojet engine components were specific fuel consumption, thrust, overall exergy efficiency, and air-to-fuel ratio. The turbojet engine was operated at different throttle settings to monitor the changes in the performance parameters. As a result of using different kerosene and diesel fuel blends at different throttle settings, it was observed that the findings were consistent. Generally, the maximum exergy efficiencies took place in the turbine except for the full throttle settings. The minimum exergy efficiencies belonged to the nozzle. It was observed that irrespective of which fuel blend was used, thrust specific fuel consumption values decreased as the throttle setting increased. On the other hand, thrust values, overall exergy efficiencies, and air-to-fuel ratios had an increasing trend as the throttle setting was increased.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation for the different blend ratios of kerosene with diesel on the exergetic performance of a small-scale turbojet engine for UAV missions

Yücer

Nacaklı

2023

International Journal of Engine Research

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“…Researchers focused on aircraft design with fuel cells and hydrogen [27], hybridized aircraft engines [28] [29], hydrogen infrastructure [30] and so on. Due to the abundant wind energy resources close to the airport [31], deployment of wind turbine systems in wind farms can generate sufficient renewable energy [32].…”

Section: Introductionmentioning

confidence: 99%

Low-carbon transition in smart city with sustainable airport energy ecosystems and hydrogen-based renewable-grid-storage-flexibility

Zhou

2022

Energy Reviews

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“…Although high proportions of ethanol can drastically reduce Flashpoint of fuel blends, additives like ethanol are likely to be used soon [20]. Seyam presents a complete review about the use of different additives as methanol, ethanol, DME, and even hydrogen in hybrid aircraft systems [21].…”

Section: Introductionmentioning

confidence: 99%

“…These ranges allow fostering productive chains for biofuels obtained from biomass, especially in developing countries [5,6,22,23]. This is specially written in the series of compromises under the United Nations Framework Convention on Climate Change (UNFCCC) and the established guidelines by the Intergovernmental Panel on Climate Change (IPCC) [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Palm oil transesterification biodiesel is part of one of the productive chains of renewable sources in Colombia.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, the bulk volume of generated oil is devoted to the food industry. A small fraction goes for transportation, which does not conflict with the food supply in the country [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. Being a renewable fuel, biodiesel offers good stability, is sulfur-free, and contains low percentages of nitrogen compounds.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Investigation of the Mechanical and Thermal Behavior of a PT6A-61A Engine Using Mixtures of JETA-1 and Biodiesel

et al. 2021

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Biofuels are important additives to conventional fuels in combustion engines of the transport sector, as they reduce atmospheric emissions and promote environmental-friendly production chains. The mechanical and thermal performance of a PT6A-61A engine on a test bench of the Colombian Air Force operating with blends of JETA-1 and Biodiesel up to 25% volume values of substitution is evaluated in this work. Experimental results show that blends are operationally reliable up to 15% volume content. In that range, the engine operation is not compromised in terms of response variables. Moreover, experimental properties of fuel blends show that the freezing point—which is the most critical variable, does not comply with aeronautical regulations. The system dynamics are subject to several variations in the test parameters, which mainly affected fuel flow, Inter-Turbine Temperature (ITT), and engine performance. A Principal Component Analysis (PCA) is performed over the experimental results to quantify possible disturbances on the bench measurements. This is based on the fact that the study is restrained to stationary test bench conditions.

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Novel hybrid aircraft propulsion systems using hydrogen, methane, methanol, ethanol and dimethyl ether as alternative fuels

Cited by 35 publications

References 35 publications

Experimental investigation for the different blend ratios of kerosene with diesel on the exergetic performance of a small-scale turbojet engine for UAV missions

Experimental investigation for the different blend ratios of kerosene with diesel on the exergetic performance of a small-scale turbojet engine for UAV missions

Low-carbon transition in smart city with sustainable airport energy ecosystems and hydrogen-based renewable-grid-storage-flexibility

Experimental Investigation of the Mechanical and Thermal Behavior of a PT6A-61A Engine Using Mixtures of JETA-1 and Biodiesel

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