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    Wyświetlanie 1-12 z 12
    Tytuł:
    Analysis of hazards occurring during the use of hydrazine
    Autorzy:
    Janeba-Bartoszewicz, E.
    Rojewski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/246926.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    aviation fuel
    hydrazine
    airport rescue group
    Opis:
    The article presents the safety issue bonded to the Polish Air Force F-16 multirole aircraft. The authors pointed out the issue of fuel used for emergency supply system of these aircrafts. The article emphasized the fact that these aircrafts require special fuel with designation H-70, which is 70% aqueous solution of toxic hydrazine. For this reason, the rescue services of Polish Air Force bases where Polish F-16 are stationed had to be adjusted accordingly. Just as importantly, authors noticed that in the event of an emergency landing of this aircraft at different airports could receive difficulties associated with the possible leakage of hydrazine, or its neutralization in the absence of specialized Hydrazine Response Team, which are part of the Airport Rescue Group. After the introduction of new aircraft for use in the Polish Air Force (in this case F-16 multirole aircraft), it is necessary to analyse the safety of their use in the context of potential places on which they can land. This is related, among others, to the safety of managing liquid fuels. In the case of F-16 aircraft, one must bear in mind besides the F-34 fuel, also hydrazine (H- 70). The article presents a functional diagram of EPU system of emergency power supply EPS of F-16 multirole aircraft.
    Źródło:
    Journal of KONES; 2018, 25, 4; 149-154
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Security of military aviation flight operations concerning the quality of fuel supplied to aircraft
    Autorzy:
    Wojdat, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/198540.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    aviation
    aviation fuel
    fuel quality
    lotnictwo
    paliwo lotnicze
    jakość paliwa
    Opis:
    The specificity of military flights operations imposes a number of requirements on aircraft. One of the main factors concerning the realization of the air task is the reliability of the engine. The most common cause of aircraft engine malfunctioning is the quality of the fuel supplied. This paper presents the factors affecting the quality of fuel supplied to aircraft and the procedures preventing the delivery of aircraft fuel, which could interfere with the operation of the aircraft engine.
    Źródło:
    Zeszyty Naukowe. Transport / Politechnika Śląska; 2017, 94; 239-247
    0209-3324
    2450-1549
    Pojawia się w:
    Zeszyty Naukowe. Transport / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The development of the aviation fuel market in Poland and changes in civil passenger traffic
    Rozwój rynku paliw lotniczych w Polsce a zmiany w cywilnym ruchu pasażerskim
    Autorzy:
    Muweis, Justyna
    Łamasz, Bartosz
    Powiązania:
    https://bibliotekanauki.pl/articles/283661.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
    Tematy:
    aviation fuel market
    aviation fuel price
    air passenger transport
    rynek paliw lotniczych
    cena paliw lotniczych
    cywilny transport pasażerski
    Opis:
    The development of air transport affects elements of the aviation fuel market. In recent years an increase in both the number of passengers and the number of passenger operations has been observed. This phenomenon also concerns passengers and the number of operations served by Polish airports which translates into more and more fuel consumption in Poland. The authors of the study tried to approximate the characteristics of aviation fuels used in various types of aircrafts. The most important of them, from the perspective of the Polish aviation sector, include Jet. This type of fuel plays a key role in civil aviation. In the article, the enterprises operating in the analyzed sector were also reviewed. The empirical part of the article is devoted, in turn, to the analysis of changes in air passenger transport in Poland and changes in Jet fuel prices on the Polish fuel markets. The conducted research shows that the dynamics of changes in the number of passengers, as well as the number of passenger operations at Polish airports were characterized by an upward trend, and the increase in the number of passengers was driven not only by a larger number of available flights, but also by such factors as: increasing the capacity of aircraft and increasing the fill rate for seats. The authors have also attempted to examine the strength of dependence between the number of passengers deciding to use Polish airports and Jet fuel prices, which in recent years have undergone significant fluctuations. For this purpose, the value of Pearson’s linear correlation coefficient was used and the analyzed period covered the years 2011–2017. The data on passenger traffic used in the study came mainly from periodic reports prepared by the Civil Aviation Office (ULC).
    Rozwój transportu lotniczego oddziałuje na poszczególne elementy rynku paliw lotniczych. W ostatnich latach obserwuje się wzrost zarówno liczby pasażerów, jak i liczby operacji pasażerskich. Zjawisko to dotyczy także pasażerów i liczby operacji obsługiwanych przez polskie porty lotnicze, co przekłada się na coraz większe zużycie paliw w Polsce. Autorzy opracowania podjęli próbę przybliżenia charakterystyki paliw lotniczych wykorzystywanych w różnego rodzaju statkach powietrznych. Do najważniejszych z nich, z perspektywy polskiego sektora lotniczego, należy zaliczyć przede wszystkim paliwo Jet. Wspomniane paliwo odgrywa kluczową rolę w lotnictwie cywilnym. W artykule dokonano ponadto przeglądu podmiotów działających w badanym sektorze. Część empiryczną pracy poświęcono z kolei analizie zmian w lotniczym transporcie pasażerskim w Polsce oraz zmianom cen paliwa typu Jet na polskim rynku paliw. Z przeprowadzonych badan wynika, że dynamika zmian liczby pasażerów, a także liczby operacji pasażerskich na polskich lotniskach charakteryzowały się wzrostowym trendem, a sam przyrost liczby pasażerów napędzany był nie tylko przez większą liczbę dostępnych lotów, ale także takimi czynnikami, jak: zwiększenie pojemności samolotów i wzrost współczynnika wypełnienia miejsc. Autorzy podjęli również próbę zbadania siły zależności pomiędzy liczbą pasażerów decydujących się skorzystać z polskich portów lotniczych a cenami paliwa Jet, które w ostatnich latach ulegały dość znacznym wahaniom. W tym celu wykorzystano wartość współczynnika korelacji liniowej Pearsona, a analizowany okres objął lata 2011–2017. Wykorzystane w opracowaniu dane dotyczące ruchu pasażerskiego, pochodziły przede wszystkim z okresowych raportów, przygotowywanych przez Urząd Lotnictwa Cywilnego (ULC).
    Źródło:
    Polityka Energetyczna; 2019, 22, 1; 153-168
    1429-6675
    Pojawia się w:
    Polityka Energetyczna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Usage of Plant Test Systems for the Determination of Phytotoxicity of Contaminated with Petroleum Products Soil
    Autorzy:
    Cherniak, Larysa
    Mikhyeyev, Oleksandr
    Madzhd, Svitlana
    Lapan, Oksana
    Dmytrukha, Tetyana
    Korniienko, Iryna
    Powiązania:
    https://bibliotekanauki.pl/articles/1838276.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    phytotoxicity
    biotesting
    soil
    oil product
    pollution
    aviation fuel
    Opis:
    The level of phytotoxicity of the soil samples artificially contaminated with the aviation kerosene was determined in the work. The dependences of the growth characteristics of the plant test system (flax) on the excess of the approximate permissible concentrations (APC) of the oil product concentration in the soil were identified. The change in the mass of raw material depending on the level of aviation kerosene contamination of soil samples was determined. A decrease in the plant growth activity with an increase in the content of aviation fuel in the soil was established. It was found that there is a hormesis effect at certain concentrations of aviation kerosene in the soil. The comparison of the concentration dependences of the action of petroleum products on the growth rates of seedlings and their dependence on the distance to the source of pollution allowed in the latter case to conduct a kind of “dosimetry” on exposure concentrations when the petroleum product concentration was not determined.
    Źródło:
    Journal of Ecological Engineering; 2021, 22, 6; 66-71
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Usage of Plant Test Systems for the Determination of Phytotoxicity of Contaminated with Petroleum Products Soil
    Autorzy:
    Cherniak, Larysa
    Mikhyeyev, Oleksandr
    Madzhd, Svitlana
    Lapan, Oksana
    Dmytrukha, Tetyana
    Korniienko, Iryna
    Powiązania:
    https://bibliotekanauki.pl/articles/1838382.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    phytotoxicity
    biotesting
    soil
    oil product
    pollution
    aviation fuel
    Opis:
    The level of phytotoxicity of the soil samples artificially contaminated with the aviation kerosene was determined in the work. The dependences of the growth characteristics of the plant test system (flax) on the excess of the approximate permissible concentrations (APC) of the oil product concentration in the soil were identified. The change in the mass of raw material depending on the level of aviation kerosene contamination of soil samples was determined. A decrease in the plant growth activity with an increase in the content of aviation fuel in the soil was established. It was found that there is a hormesis effect at certain concentrations of aviation kerosene in the soil. The comparison of the concentration dependences of the action of petroleum products on the growth rates of seedlings and their dependence on the distance to the source of pollution allowed in the latter case to conduct a kind of “dosimetry” on exposure concentrations when the petroleum product concentration was not determined.
    Źródło:
    Journal of Ecological Engineering; 2021, 22, 6; 66-71
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Results of using sustainable aviation fuel in transport aircraft on different flight levels and their influence on carbon-dioxide Co2 emissions
    Autorzy:
    Lazic, Dragan
    Grujic, Vladimir
    Cvetkovic, Dragan
    Powiązania:
    https://bibliotekanauki.pl/articles/27311348.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    sustainable aviation fuel
    flight level
    carbon dioxide
    turboprop aircraft
    zrównoważone paliwo lotnicze
    wysokość lotu
    dwutlenek węgla
    samolot turbośmigłowy
    Opis:
    During the recent 40 years, the quantity of energy sources globally has been reduced, and the consequence of this situation that the oil in the world becomes more expensive. Many manufacturers have been forced to initiate the development of completely new concepts of developing commercial aircraft which would be more rational regarding fuel consumption by completely retaining the best quality of passenger services. A continuous uptrend of the propellant cost globally since 1990s has forced not only smaller companies but also the most powerful enterprises in aviation industry, such as the “General Electric”, to return to the research and development programs of Turbo Prop engines. In the case of the aircraft DHC Dash 8 Q 400, the engineering preparation of the flight for calculating the changes of travel propellant while the switch of the flight altitude was being done. By analyzing nine various levels of flight, the conclusion has been indisputably reached that regardless of the vast altitudes of a flight and the horizontal distance covered during climb and descent, the fuel consumption is significantly lower than while flying at much lower altitudes with much lower horizontal distance in climb and descent. All the indicators that have been reached undeniably confirm the fact that a flight at great altitudes enables lower consumption of fuel and less necessary time of the flights. By such analysis and setting sustainable aircraft fuels into equations, numerous improvements in the world of aviation, which directly influence the quality of life on the global level, are achieved. Likewise, it will indicate the possibility of substitution of classical hydrocarbon (fossil) fuels with biofuels which, while burning, release much lower emission of exhaust gases.
    Źródło:
    Zeszyty Naukowe. Transport / Politechnika Śląska; 2023, 119; 105--123
    0209-3324
    2450-1549
    Pojawia się w:
    Zeszyty Naukowe. Transport / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The future of sustainable aviation fuels
    Autorzy:
    Marszałek, Natalia
    Lis, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2202514.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    sustainable aviation fuel
    kerosene
    emissions
    carbon dioxide
    renewable feedstock
    zrównoważone paliwo lotnicze
    nafta oczyszczona
    emisje
    dwutlenek węgla
    surowce odnawialne
    Opis:
    Presented work has an overview character and is focused on perspectives of sustainable aviation fuels application in civil aviation sector. The mean role of SAF application is to ensure reduction of greenhouse gas emissions and aviation footprint on environment. Paper describe the combustion proces of hydrocarbon fuels and problem related to the emission of carbon dioxide to the atmosphere. Fuel consumption, CO2 emission and SAF production data was presented on the graphs. The sustainalbe aviation fuel has been characterized. Certified conversion technologies with potential feedstock used for SAF production was described. Literature studies indicate that sustainable aviation fuel is successfully used in air transport.
    Źródło:
    Combustion Engines; 2022, 61, 4; 29--40
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Emission of volatile organic compounds during combustion process in a miniature turbojet engine
    Autorzy:
    Janicka, A. B.
    Zawiślak, M.
    Gawron, B.
    Górniak, A.
    Białecki, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/208236.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    turbojet engine
    alternative fuels
    organic compounds
    aviation fuel
    volatile organic compounds
    silnik turboodrzutowy
    paliwa alternatywne
    związki organiczne
    paliwo lotnicze
    lotne związki organiczne
    Opis:
    Aviation is one of the fastest growing modes of transport. Due to the growing number of flights, the consumption of aviation fuels (mainly jet fuels) keeps increasing. The combustion process in the aircraft engine results in harmful exhaust emissions having an adverse impact on the environment. Alternative fuels based on bio-components and biofuels are a way of reducing the harmful exhaust emissions. Analyses and measurements performed on real aircraft engines are complex and expensive. For this reason, increasingly more research and development projects have been carried out on small-scale engines. This paper presents investigations into volatile organic compound emissions from jet fuel combustion in a miniature turbojet engine. Based on chromatography tests, the compositions of exhaust gases produced by the jet engine fed with various fuels were determined, which in turn led to evaluation of its toxicity and harmfulness. Conventional fossil-based fuel Jet A-1 and a blend of Jet A-1 with 25 vol. % of biobutanol were tested at the same fuel flow rates. The engine working parameters such as, e.g., thrust or emission index have been determined with respect to the type of fuel. The test results have been compared and analyzed.
    Źródło:
    Environment Protection Engineering; 2018, 44, 4; 57-67
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Method of preliminary evaluation of biocomponents influence on the process of biofuels combustion in aviation turbine engines
    Autorzy:
    Kaźmierczak, U.
    Kulczycki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/247673.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    fuel
    aviation turbine engines
    biofuel
    synthetic hydrocarbons
    engine test
    Opis:
    The aim of this article is presentation of the new method of preliminary evaluation of biocomponents influence on the process of biofuels combustion in aviation turbine engines. This method is based on the tests of evaluated biofuels on engine stand MiniJetRig equipped with small turbine engine. The idea of this new method is to compare the combustion process of evaluated biofuel with the combustion of reference fuels. The reference fuel used in presented research was mineral Jet A1. Two compositions of pure hydrocarbons were blended with Jet A1 fuel and tested using MiniJetRig. The main criterion of combustion process assessment was CO concentration in exhaust gases. As the final criterion of evaluated biofuel the ΔCO = [COWx – COJet] was adopted, where COWx – the concentration of CO in exhaust gases emitted during combustion of evaluated fuel and COJet – the concentration of CO in exhaust gases emitted during combustion of Jet A1 fuel. This method was preliminary verified using HEFA biofuel previously accepted for aviation application. The obtained results qualify this biofuel as similar to Jet A1 ones – the DCO was within limits –30 – +20. The presented method needs further research, using much more evaluated fuels, to confirm their usefulness for laboratory pre-selection of new biofuels.
    Źródło:
    Journal of KONES; 2017, 24, 4; 83-90
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Drive unit characteristics of a completely electrical passenger aircraft
    Autorzy:
    Fąfara, Jean-Marc
    Powiązania:
    https://bibliotekanauki.pl/articles/1193885.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    aircraft
    electric drive unit
    fuel cells
    all-electric aircraft
    green aviation
    Opis:
    Aviation has, over the years, become an inseparable element of human life. Airplanes are very commonly used for various tasks, such as transport of passengers and goods, military attack and defence, rescue, recreation and so on. In spite of the many advantages of aviation, one cannot ignore its disadvantages. The most important disadvantages of aviation are the emissions that cause atmospheric pollution and noise. Additionally, one should remember about the decreasing stocks of non-renewable fuels. These drawbacks affect human health and the natural environment. Therefore, a good alternative to conventional drive units in aircraft may turn out to be electric drive units in the near future. The aim of this article is to check the extent to which today’s knowledge and technology allow the use of electric drive units instead of conventional aircraft drive units. This article presents the concept of electric aircraft, from the electric drive unit to its power supply system. The feasibility of designing an electric jet drive unit for a passenger aircraft was analysed based on the performances of PZL 104 Wilga 35 and Boeing B787 Dreamliner.
    Źródło:
    Power Electronics and Drives; 2020, 5, 40; 59-71
    2451-0262
    2543-4292
    Pojawia się w:
    Power Electronics and Drives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of the impact of oil presence in the aviation fuel on particle size distribution
    Autorzy:
    Jasiński, R.
    Pielecha, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/198385.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    aviation engine
    particles
    fuel additives
    silnik lotniczy
    cząstki
    dodatki do paliw
    Opis:
    Emissions from aircraft engines represent a highly complex and important issue, which is related to the risk to human health. Particles emitted in urban areas and in the vicinity of airports affect air quality and have a particularly negative impact on airport workers. The development of measurement techniques and the methodology for evaluating exhaust emissions have allowed for the elaboration of appropriate procedures for the certification of aircraft and the enhancement of existing standards. Particulate matter emissions depend, among other things, on the composition of the fuel used and its additives. Some aircraft engine designs require a fuel additive in the form of oil, which ensures the proper operation of the fuel supply system. This article presents the results of studies conducted on jet engines powered by clean aviation fuel and fuel with the addition of oil. The aim of the study was to evaluate the effect of the addition of oil on the size distribution and concentration of emitted particles. It was found that, for small values of thrust, oil additive increases the concentration of particles. With an increase in the thrust force, the reduction of particles concentration was recorded in the case of the engine powered by fuel with oil additive. There was no significant effect of oil additive on the size distribution of emitted particles.
    Źródło:
    Zeszyty Naukowe. Transport / Politechnika Śląska; 2017, 94; 57-64
    0209-3324
    2450-1549
    Pojawia się w:
    Zeszyty Naukowe. Transport / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Heavy fuel engines
    Silniki ZI zasilane paliwem lotniczym
    Autorzy:
    Dutczak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/133949.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    drones
    unmanned aerial vehicle
    UAV
    aviation kerosene
    SI engine
    Jet A
    JP-5
    JP-8
    heavy fuel engines
    HFE
    drony
    nafta lotnicza
    silnik ZI
    Opis:
    The principle of operation and chosen examples of construction of SI engines designed to be powered with aviation fuel (Heavy Fuel Engines – HFE) have been presented in the article. Contemporary solutions of the HFE combustion system constitute the further development of a patent of an Australian company Orbital working in the field of two-stroke SI engines. Engines of this type, characterized by low weight and low value of specific fuel consumption, are used among others for the propulsion of drones (Unmanned Aerial Vehicles – UAV), where range and endurance are essential parameters. That is also a practical realization of the military logistical concept of using a "single fuel in the battlefield".
    W artykule przedstawiono zasadę działania silników z zapłonem iskrowym i wybrane przykłady konstrukcji tych silników przewidzianych do zasilania paliwem lotniczym na bazie nafty, tzw. HFE (Heavy Fuel Engines). Współczesne rozwiązania systemu spalania HFE stanowią rozwinięcie patentu znanej australijskiej firmy Orbital zajmującej się silnikami dwusuwowymi ZI. Silniki tego typu, charakteryzujące się małą masą i małą wartością jednostkowego zużycia paliwa, stosowane są między innymi do napędu współczesnych dronów, gdzie istotnymi parametrami są zasięg i długotrwałość lotu. System ten wykorzystywany jest również do realizacji wojskowej logistycznej koncepcji stosowania jednego typu paliwa do wszystkich pojazdów.
    Źródło:
    Combustion Engines; 2015, 54, 4; 34-46
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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