Wyniki wyszukiwania - Biblioteka Nauki

1

Impact of airports on the environment: opinions of local community representatives

100%

Piotrowska-Trybull M. , Kozuba J. , Sirko S.

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tom z. 117

191--209

EN

Research presented in this article was undertaken to determine how representatives of authorities and residents of communes perceive airports in the context of the impact of these airports on the socio-economic situation in the communes. The goal was achieved using: analysis of documentation of communes, analysis of data on the functioning of airports, and a diagnostic survey using the interview technique and survey technique. The research was carried out on representatives of 5 communes located in Poland. To analyse the collected material and present the results, Statistica v.13.3, R v.4.0.0 and RStudio editor software were used. Results of this research proved that airports play a pivotal role in stimulating the development of the region. They influence the quality of life in the commune by contributing to the creation of jobs, attracting investors, and generating income for the municipal budget through taxes paid.

2

Technology improving safety of crowdfunding platforms functioning in the context of the protection of the start-up investors in the financial and transport sectors

100%

Polishchuk V. , Kelemen M. , Kozuba J.

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tom Vol. 49, iss. 1

313--330

EN

The information technology models improving security functioning of crowdfunding platforms and advice on a new type of business were developed. The article solves the problem of safety of crowdfunding platform functioning based on developed models: rating assignment system of unified assessment crowdfunding platforms; startup projects assessment; startup projects risk assessment concerning their financing safety level and criminal law protection of investors against the financial fraud. The models are based on the correct usage of fuzzy logic and fuzzy set device to reveal the uncertainty of experts’ consideration that insures authenticity of scientific results.

3

Use of electric motors in the context of glider aviation

100%

Kozuba J. , Wojnar T. , Mrozik M. , Stołtny B.

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2021

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tom Vol. 51, iss. 2

103--115

EN

In sailplane aviation, I attach great importance to the achieved aerodynamic parameters due to the main idea of sailplane flights, which is the flight of a sailplane without external energy supply for staying in the air and only in favourable weather conditions, e.g. increasing thermal movements of the air. Only during take-off, external devices, such as a winch or a towing plane, can be used. Therefore, the use of a propulsion installed in sailplanes and operating only during take-off is a very convenient solution. This is a step towards facilitating the access to flying for a wider group of people due to the reduction of costs related to the take-off processes, and also increases the level of safety of sailplane flights by enabling the use of propulsion at critical moments of the flight. The study presents the current trends in the development of gliding, in particular motor gliders. Additionally, as a result of research works, the energy storage system was shown, which is the weakest element of the system, and at the same time the one with the greatest development potential.

PL

W lotnictwie szybowcowym dużą wagę przywiązuje się do osiąganych parametrów aerodynamicznych ze względu na główną ideę, jaką jest lot bez zewnętrznego zasilania energią do przebywania w powietrzu i tylko w sprzyjających warunkach atmosferycznych, np. zwiększenie ruchów termicznych powietrza. Jedynie podczas startu można korzystać z urządzeń zewnętrznych, takich jak wyciągarka czy samolot holowniczy. Bardzo wygodnym rozwiązaniem jest zainstalowanie w szybowcach napędu działającego tylko podczas startu. To krok w kierunku ułatwienia dostępu do latania szerszej grupie osób ze względu na redukcję kosztów związanych z procesami startu, a także zwiększenie poziomu bezpieczeństwa lotów szybowcowych poprzez umożliwienie wykorzystania napędu w krytycznych momentach. W opracowaniu przedstawiono aktualne trendy w rozwoju szybownictwa, w szczególności motoszybowców. Dodatkowo w wyniku prac badawczych wykazano najsłabszy element systemu, a jednocześnie mający największy potencjał rozwojowy – układ magazynowania energii.

4

Aircraft Skin Corrosion and Structural Safety Considerations

100%

Pila J. , Kozuba J. , Martinec F.

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nr 2(7)

149-163

PL

Korozja pokrycia samolotu i względy bezpieczeństwa konstrukcyjnego

5

Using unmanned aerial vehicles in recognizing terrain anomalies encountered in the gas pipeline right-of-way (row)

100%

Kozuba J. , Marcisz M. , Rzydzik S. , Paszkuta M.

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tom z. 123

57--73

EN

The objective of the undertaken research was to characterize and evaluate the impact of weather and lighting conditions on recording terrain anomalies in the photographs obtained during a UAV photogrammetric flight. The present work describes the use and capabilities of the UAV in the mapping of photo acquisition conditions similar to those performed during inspection flights with the use of a manned helicopter equipped with a hyperspectral camera, in the target range of visible light. The research was conducted in the southern part of Poland (between Gliwice and Katowice), where 7 routes were selected, differing from one another in terms of terrain anomalies (buildings, types of land areas, vehicles, vegetation). In the studies, which involved photogrammetric flights performed using a UAV, different seasons and times of day as well as changes in light intensity were taken into account. The flight specification was based on the main parameters with the following assumptions: taking only perpendicular (nadir) RGB photographs, flight altitude 120 m AGL, strip width 160 m, GSD ≤0.04 m and overlap ≥83%. The analysis of the photographic material obtained made it possible to correct the catalog of anomalies defined previously, since the recognition of some objects is very difficult, being usually below the orthophotomap resolution. When making and evaluating orthophotomaps, problems with mapping the shape of objects near the edges of the frame were found. When a 12 mm lens is used, these distortions are significant. It was decided that for the purpose of generating training data from orthophotomaps, only the fragments containing objects which shape would be mapped in accordance with the real one would be used. Thus, the effective width of orthophotomaps obtained from simulated flights will be approximately 100 m.

6

An Evaluation of the Technical Condition of the ROTAX 912S Engine Based on Spectrographic Oil Analysis

88%

Kozuba J. , Peruń G. , Stołtny B. , Stołtny A. , Wojnar T.

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tom 2

18--26

EN

Flight safety, which characterizes the aviation industry, is an important element that contributes to increasing the trust of customers and passengers. The aforementioned factor closely corresponds to the reliability of aircraft and their individual components, including power units. Over one hundred years of development of aviation techniques has led aviation to the currently observed level of safety and reliability. Aviation techniques should be understood as technologies as well as local and global regulations affecting individual branches of the industry. Guidelines No. 9 of the President of Polish Civil Authority of August 29, 2016 on the inter-repair periods of piston engines, indicate the possibility of waiving the requirements related to the performance of major repairs, and a number of conditions must be met. One of the requirements set out in the Guidelines is performing a spectrographic analysis of engine oil in order to estimate the rate of wear of individual engine parts (ULC, 2016). The main goal of this study was to recognize whether regular analysis of engine oil may affect the assessment of the technical condition of aircraft piston engines based on the example of ROTAX 912S, thus affecting or not influencing the maintenance intervals. The engines referred to in the research were produced in the amount of about 2,000 units. Thus, these engines gained popularity as power units for airplanes, helicopters, and gyroplanes. With the increasing number of ROTAX units introduced into service, research into the technical condition becomes more important due to their percentage share in the market.