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Analysis of the performance of an aircraft powered by hybrid propulsion

Majka Andrzej, Muszyńska-Pałys Jagoda

Combustion Engines

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2023

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R. 62, nr 2

45--51

EN

Travel is an inseparable part of human life. It is connected not only with private life but also with business life. People want to travel more, farther and faster. That is why air transport is currently one of the fastest-growing areas of passenger transport, and airlines carry more and more passengers from year to year. Due to the growing negative impact of air transport on the natural environment, research aimed at the development of technologies to reduce the negative impact of air transport is becoming more and more important. One of the possibilities for improving the situation is the use of alternative energy sources, limiting the emission of greenhouse gases into the atmosphere. The paper aimed to analyze the meaningfulness of replacing the classic power unit in a light transport aircraft with a hybrid, combustion-electric power unit. Analyzes were made with the use of simulation methods for the PZL M-28 aircraft.

2

Ekologiczne aspekty wspomagania startu samolotu systemem wykorzystującym zjawisko magnetycznej lewitacji

Majka A.

Logistyka

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2015

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nr 4

593--602, CD1

PL

Wśród najważniejszych problemów stojących współcześnie przed transportem lotniczym wyróżnić można niekorzystne oddziaływanie samolotów i lotnisk na środowisko naturalne oraz rosnące koszty przewozów. Jedną z możliwości poprawy tej sytuacji jest opracowywanie nowatorskich rozwiązań zmierzających do obniżenia emisyjności samolotów oraz poprawiających efektywność transportową. Nowe technologie startu i lądowania samolotu ukierunkowane są głównie na: zmniejszenie zużycia paliwa i zmniejszenie powierzchni obszarów zajmowanych przez lotniska. Technologia MAGLEV jest jedną z najbardziej efektywnych metod rozpędzania i hamowania samolotu w fazie rozbiegu i dobiegu. Wykorzystanie tej technologii wymaga opracowania systemu naziemnego, określenia zakresu modyfikacji konstrukcji samolotu oraz opracowania procedur bezpiecznego lądowania, również awaryjnego. Technologia ta jest dobrze znana i wykorzystywana od lat w konstrukcji pociągów poruszających się z bardzo dużymi prędkościami. Uważana jest za bezpieczną i przyjazną dla środowiska. System taki, dzięki mniejszemu wymaganemu poziomowi mocy silników w fazie startu, wpłynie na obniżenie niekorzystnego oddziaływania samolotów na środowisko naturalne poprzez redukcję emisyjności w fazie startu i lądowania oraz poziomu hałasu na lotnisku i w jego obszarze. Celem pracy było dokonanie analizy możliwego zmniejszenia niekorzystnego oddziaływania na środowisko samolotu transportowego wspomaganego w fazie startu systemem wykorzystującym lewitację magnetyczną, zarówno w skali lokalnej (obszary wokół lotniskowe) jak i globalnej.

EN

Among the most important problems faced by the air transport today there can be mentioned some negative influences of aircraft and airports on the environment and the increasing costs of air transport. One of the possibilities to improve the situation is to work out innovative solutions aimed at decreasing of the aircraft pollution and improving the transport effectiveness. There are several technologies that could be applied to reduce the harmful influence of the air transport on the environment and improve economic efficiency. One of the major concepts is using magnetic levitation technology to support aircraft take-off and landing. In case of using the magnetic levitation technology, the airframe weight can be considerably reduced, since the undercarriage system could be lighter or even be ignored. Less weight decreases aerodynamic drag and overall fuel consumption which leads to emission reduction. Different conditions of the take-off give possibilities to shape the trajectory of the initial stage of the aircraft climb after the take-off in order to decrease the negative influence on the environment. The aim of the present work was to evaluate possible reduction of negative influence on the environment of the aircraft aided in the phase of the take-off by the system using the MAGLEV technology, both in local and global sense.

3

Minimum emission unconventional MAGLEV assisted take-off

Majka A.

Journal of KONES

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2014

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Vol. 21, No. 4

335--342

EN

Among the most important problems faced by the air transport today there can be mentioned some negative influences of aircraft and airports on the environment and the increasing costs of air transport. One of the possibilities to improve the situation is to work out innovative solutions aimed at decreasing of the aircraft pollution and improving the transport effectiveness. Among the most innovative ideas is the use of magnetic levitation (MAGLEV) to aid the take-off and landing of the transport aircraft. The “Integrated Ground and on-Board system for Support of the Aircraft Safe Take-off and Landing” – GABRIEL, deals with radically new integration of the MAGLEV technology into the air transportation system that contains aircraft, airport, air traffic control, authority, logistic and operational support, maintenance, etc. GABRIEL idea includes operation of the aircraft without the conventional undercarriage system and using the ground based power and supporting systems for take-offs and landings. In case of using the GABRIEL system as a catapult, the aircraft on the track must be accelerated to the speed permitting to reach the altitude of 300 m or more. Such take-off and climb results in minimum noise and minimal emission of substances harmful for the environment. After reaching the altitude of 300 m, the aircraft may follow its flight with using different flight strategies. Different conditions of the unconventional take-off needs to shape other way the trajectory of the initial stage of the aircraft flight after the lift-off. The aim of the present work was to determine the optimal conditions of the lift-off and the optimal trajectory of the initial climb minimizing the emission. Simplified realization of the Ritz- Galerkin method was used in this work, which uses an approximate solution to boundary value problems for determining the optimal flight trajectory.