Analysis of the possibility of using an engine with a rotating piston as the propulsion of an electric generator in application to a motor glider propulsion

Orkisz, Marek; Wygonik, P.; Kuźniar, Michał; Kalwara, Maciej

doi:10.19206/ce-2019-346

Cited by 3 publications

(5 citation statements)

References 3 publications

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“…The characteristics of the Emrax motor were obtained from the manufacturer's manual. After determining the appropriate range of cooperation between the combustion engine and the electric motor, it is possible to determine the total energy stored onboard the aircraft Eh [J], using the following formula [15]: Based on the characteristics of the engines, it can be concluded that the most favorable operating range of the generator set is the range from 3700 rpm to 4700 rpm (power range from 20 kW to 25 kW). At these points, the characteristics of the motors intersect, and between these points-they almost coincide (the differences in obtained power amount to approx.…”

Section: Methodsmentioning

confidence: 99%

“…After determining the appropriate range of cooperation between the combustion engine and the electric motor, it is possible to determine the total energy stored onboard the aircraft E h [J], using the following formula [15]:…”

Section: Methodsmentioning

confidence: 99%

“…To further improve the operational parameters of the AOS H2 motor glider, based on previous works [14,15], distributed propulsion was applied to it. Based on the analyses [14,15], a set of 10 AXI 8120 electric motors with a maximum power of 4 kW each, cooperating with propellers with a diameter of 0.5 m was selected.…”

Section: Methodsmentioning

confidence: 99%

“…To determine the range and duration of flight, the energy used for take-off should be subtracted from the energy stored on board in the batteries, and then the energy remaining on board should be divided by the power required for flight and the efficiency of the propulsion unit, which is presented by Formulas ( 9)-( 11) [8,14,15]:…”

Section: Cl-lift Coefficient [-]mentioning

confidence: 99%

“…The impact of distributed propulsion on the structure and aerodynamics of the aircraft was examined in an analytical manner [13]. The LEAPtech project was an inspiration for the authors to conduct their own research on distributed propulsion, which resulted in preparing a doctoral dissertation and papers published in [2,14,15] in which the AOS H2 motor glider was the basis for the application of distributed propulsion, and various sources of energy used to propel this aircraft were analyzed.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Pollutants Emission for Hybrid Aircraft with Traditional and Multi-Propeller Distributed Propulsion

2022

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Due to the dynamic development of environmentally friendly aircraft propulsion, the paper describes the effect of distributed propulsion on the emission and fuel consumption changes of aircraft in comparison to aircraft with traditional propulsion. A distributed propulsion is a propulsion composed of a set of units located on the leading edges of the wings or on the fuselage, generating a thrust symmetrically distributed on both sides of the fuselage. The analysis was based on the technical data of AOS H2 motor glider. During the tests for the adopted geometry of distributed propulsion, the improvement of airframe aerodynamic parameters was determined by conducting a CFD flow analysis. Based on the energy method, the flight range and duration were determined for the aircraft with distributed propulsion. It occurred that they increased by 19% compared to the initial variant—traditional propulsion. For the adopted energy source—Wankel AG-407TGi engine, the emissions of CO, CO2, and NO in the exhausts were measured. After the application of distributed propulsion, the emissions and fuel consumption were reduced by 16%. The research conducted showed that the application of distributed propulsion instead of traditional propulsion can bring measurable environmental benefits. Conducting further research on multi-criteria optimization of aircraft structures may bring further benefits in terms of improving aircraft performance and environmentally friendly indicators.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Cl-lift Coefficient [-]mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparison of Pollutants Emission for Hybrid Aircraft with Traditional and Multi-Propeller Distributed Propulsion

2022

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Analysis of the Application of Distributed Propulsion to the AOS H2 Motor Glider

Kuźniar

Orkisz

2019

Journal of KONES

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The paper describes the selection of a distributed propulsion for the AOS H2 motor glider (selection of engines, their number, and propellers) and determination of its performance. This analysis is related to the research conducted on environment friendly and hybrid propulsions in various research centres. The main aim of the analyses conducted is to increase the performance of vehicles powered by electric motors. The batteries have a low density of energy, i.e. the ratio of mass to cumulated energy. Instead of a battery set, it is possible to apply a hybrid-electric system, where the combustion engine works as a generator or an electric-hydrogen generator, where the hydrogen cell supports a small set of batteries. One of such flying vehicles, fitting in this trend, is the AOS H2 motor glider built at the Rzeszow University of Technology in cooperation with other universities. It is a hybrid aircraft, equipped with a hydrogen cell, which together with a set of batteries is a source of electricity for the Emrax 268 electric motor. To increase the vehicle's performance (the range and flight duration), it is possible to use a distributed propulsion. This type of propulsion consists in placing many electric motors along the wingspan of the aircraft. Appropriate design of such a system (propeller diameters, engine power, number of engines) can improve the aerodynamic and performance parameters of the airframe. An analysis of the performance for the selected flight trajectory for this propulsion variant was conducted and compared to the performance of the AOS H2 motor glider equipped with traditional propulsion. The consumption of hydrogen was also determined for both systems. The results obtained were presented in the diagrams and discussed in the conclusions.

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Numerical Analysis of the Influence of Distributed Propulsion System on the Increase of the Lift Force Coefficient

Kuźniar

Bednarz

Orkisz

2020

AIAA Propulsion and Energy 2020 Forum

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Analysis of the possibility of using an engine with a rotating piston as the propulsion of an electric generator in application to a motor glider propulsion

Cited by 3 publications

References 3 publications

Comparison of Pollutants Emission for Hybrid Aircraft with Traditional and Multi-Propeller Distributed Propulsion

Comparison of Pollutants Emission for Hybrid Aircraft with Traditional and Multi-Propeller Distributed Propulsion

Analysis of the Application of Distributed Propulsion to the AOS H2 Motor Glider

Numerical Analysis of the Influence of Distributed Propulsion System on the Increase of the Lift Force Coefficient

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