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3 2019

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Analysis of electric motor vehicles market

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Maciejewska M. , Fuć P. , Kardach M.

2019

tom R. 58, nr 4

169--175

The increasingly restrictive standards related to exhaust emissions from cars make difficult the development of internal combustion engines. The activities undertaken in the design of internal combustion engines are mainly based on downsizing, e.g decreasing the engine's displacement. The main direction in the development of vehicle propulsion is to reduce carbon dioxide emissions. It is expected to reduce CO2 emissions in 2020 to reach 95 g/km. Electric vehicles achieve low noise levels and do not emitted a burn, and thus, their use leads to a reduction in the amount of toxic exhaust gases in the air. The aspect of reducing emissions of harmful exhaust compounds and activities focusing on downsizing on the market of combustion engine cars leads to a significant increase the number of electric vehicles. In 2018 around 95 million motor vehicles were registered in the world, of which around 12 million in the European Union and 273 thousand in Poland. The number of electric vehicles among all sold is around 5.5%. Every year new, more technologically advanced models appear on the electric vehicle market. In 2018, the most popular model was the Nissan LEAF and the BAIC EC-Series. A large number of Renault ZOE have also been sold. In article analyzed different models of electric vehicle, which are available on market and presented the characteristics based on e.g. price per 100 kilometers, range for every model or charging time.

Analysis of the impact of wind on fuel consumption and emissions of harmful exhaust gas compounds on the selected flight route

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Galant M. , Kurzawska P. , Maciejewska M. , Kardach M.

2019

tom R. 58, nr 4

93--101

The article discusses the issue of the impact of wind force and direction on fuel consumption and the emission of harmful exhaust gases on the selected flight route. The focus was on percentage changes in fuel consumption and emissions of individual harmful exhaust gas compounds depending on the wind speed and the direction from which it interacts with the aircraft. The analysis was carried out for three different flight levels, in order to compare changes in fuel consumption and emissions also in terms of flight altitude, however the following article focuses only on one level - FL240.

The risk of hazards analysis in unmanned aerial vehicle flight

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Maciejewska M. , Kardach M. , Galant M. , Fuć P.

2019

tom Vol. 49, iss. 3

351--374

Along with development Commercial Air Transport were observed increase popularity of general aviation, include RPAS (Remotely Piloted Aircraft System). In manned air transport through years created a lot of standards and regulations. For still developing RPAS not created any official rules came from ICAO. This article is a trial to arranged available and commonly using methods risk management hazard to RPAS area. Prepared a list of 72 questions about the hazard sources occurring in the analyzed area. The answers allow to identify 45 sources of hazard. Based on them, 18 hazards were identified. Guided by the ideas and good practices of manned aviation, it is necessary to harmonize legal regulations concerning safety management in unmanned flights.

Wraz z rozwojem lotnictwa komercyjnego, obserwuje się również rosnącą popularność lotnictwa ogólnego, w tym Bezzałogowych Statków Powietrznych (BSP). W załogowym transporcie lotniczym przez lata powstało wiele norm i przepisów prawnych dotyczących zarządzania ryzykiem. Dla wciąż rozwijających się BSP nie stworzono jeszcze, na tym obszarze zarządzania zaawansowanych zasad. Niniejszy artkuł jest, więc próbą adaptacji dostępnych i powszechnie wykorzystywanych metod zarządzania ryzykiem zagrożeń do obszaru BSP.Opracowano listę 72 pytań o występowanie źródeł zagrożeń w badanym obszarze analiz. Odpowiedzi pozwoliły na rozpoznanie 45 źródeł zagrożeń. Na ich podstawie zidentyfikowano 18 zagrożeń. Kierując się ideami i dobrymi praktykami lotnictwa załogowego, należy doprowadzić do ujednolicenia unormowań prawnych dotyczących zarzadzania bezpieczeństwem w lotach bezzałogowych.