Autor: Dziubak, T. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Technical evaluation of APC chassis
Autorzy:: Dziubak, T.
Powiązania:: https://bibliotekanauki.pl/articles/246149.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: armoured personnel carrier
operational appreciation
mobility property
Opis:: Success during combat on the modern battlefield is determined by numerous conditions. One of those conditions is a quich and unexpected (for the red force) transport of troops. Modern APCs (armoured personnel carrier) have similar terrain capability. Level of APCs adjustment to movement in a hard terrain conditions is the function of numerous indicators of its construction including e.g. correction of, usually specific, conditions for technical solutions of suspension or engine. It is possible to acquire global numericał indicator of APC utility evaluation, basing on e.g. evaluation of the terrain mobility. Such indicator is the objective way to estimate the level of fulfilling the technical specification of subject subgroup for tactical - technical specification by the APC construction. In the article is presented the proposal of methodical utility evaluation for modern APC chassis, which is based on account of proposed numerical indicators. Using the set indicators, we've provided comparison of directed and global evaluation of AMY Patria, towards other modern APCs. In the paper formulas of these indicators are described. The results of evaluation are presented on charts as well ensample types of terrain trials are shown on pictures.
Źródło:: Journal of KONES; 2009, 16, 1; 101-109
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The research of air filtration process on paper partition in the "cyclone - porous partition" system
Badanie procesu filtracji powietrza na przegrodzie papierowej w systemie "cyklon-- przegroda porowata"
Autorzy:: Dziubak, T.
Powiązania:: https://bibliotekanauki.pl/articles/243197.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: filtr dwustopniowy
charakterystyki filtru
papier filtracyjny
współczynnik chłonności pyłu
two-stage filter
filter characteristics
filtration paper
dust absorptiveness coefficient
Opis:: There are described operating conditions of two-stage engine inlet air filtration system. There are presented properties of filtration materials used for porous partitions of vehicle air filters. There is presented research method of filtration papers of two-stage filter. Air filtration thoroughness was evaluated by using of particle counter of Pamas firm. A stand to such filter papers characteristics research is designed. The basic stand element is separate cyclone and appropriately selected paper filter cartridge placed in series The dust fractional composition in purified air after a cyclone was determined. There are presented research results of filtration efficiency and thoroughness characteristics and flow drag characteristics of filtration paper as a function of dust absorptiveness coefficient km. There was proved the impact of dust fractional composition on filtration paper absorptiveness change. Designed test stand to investigations of characteristics of paper filters is described. Results of preliminary researches are also presented. The scheme of the two-stage air filter, filtration efficiency and flow drag characteristics, the functional stand schema, the dust fractional composition in air after a cyclone, filtration efficiency and flow drag, characteristics of filtration paper, dust grain number in purified air, flow drag characteristics of filtration paper for different values of filtration velocity in the cyclone and without the cyclone are illustrated in the paper.
Źródło:: Journal of KONES; 2007, 14, 2; 115-124
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Performance characteristics of panel filters for internal combustion engine inlet air working in a two-stage configuration
Autorzy:: Dziubak, T.
Powiązania:: https://bibliotekanauki.pl/articles/243465.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: two-stage air filter
filter medium
separation efficiency
flow resistance
absorption coefficient of dust
dwustopniowy filtr powietrza
medium filtracyjne
skuteczność separacji
opór przepływu
współczynnik pochłaniania pyłu
Opis:: Air filtration conditions in a single-stage and a two-stage filtration system (multicyclone-porous panel filter) are presented. Allowable flow resistance Δpfdop values reducing the air filter service life are specified. The benefits of using a multicyclone as a first stage of air filtration, including improved mobility and extended service life, are discussed. Criteria for selecting the filter media for the automobile air intake system using an absorption coefficient of dust km determined at a specific allowable flow resistance Δpfdop are specified. New methods and conditions to determine the absorption coefficient of dust km for article filter and non-woven fabric filter in a single-stage and a two-stage filtration system are developed and presented. The separation efficiency and separation performance as well as the flow resistance characteristics of the filter set including a single cyclone and a filter element with a specially selected filter medium surface area are tested. Absorption coefficients of dust km for the tested paper filter and non-woven fabric filter were determined for an allowable flow resistance. The effects of dust particle size distribution in the air downstream of the cyclone on reducing the absorption coefficient of dust of the paper filter and non-woven fabric filter in a two-stage filtration system are shown.
Źródło:: Journal of KONES; 2018, 25, 1; 83-94
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Experimental research of the material filtration characteristics with nanofibers addition
Autorzy:: Dziubak, T.
Bąkała, L.
Powiązania:: https://bibliotekanauki.pl/articles/241637.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: engine
air filter
filtration materials
nanofiber filter media
filtration efficiency
filtration performance
pressure drop
dust mass loading
Opis:: Nanofiber properties and the possibilities of their application in industry, including car air intake filtration materials production for vehicle engines are discussed. The attention is paid to the standard filtration materials low efficiency in the range of dust grains below 5 μm. Filtration materials properties with nanofibers addition are presented. Filter paper test conditions and methodology at the station with particle counter were developed. Filtration efficiency characteristics, and accuracy studies as well as filtration materials pressure drop differing in structure were made: standard paper, and materials with nanofibers addition. These are commonly used filter materials for car air intake systems production. Filtration materials with nanofibers addition test results show significantly higher efficiency values, and efficiency for dust grains below 5 μm in comparison with standard filter paper. It was found that there are 16 μm dust grains in the airflow behind the cellulose insert, which may be the reason for the accelerated wear of the engine’s “piston-cylinder” association. Lower dust mass loading km values of filtration materials with nanofibers addition in relation to standard filter papers were observed.
Źródło:: Journal of KONES; 2018, 25, 4; 83-94
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The experimental assessment of air supply system modification on inlet air filtration efficiency and military vehicle engine effectiveness improvement
Autorzy:: Dziubak, T.
Trawiński, G.
Powiązania:: https://bibliotekanauki.pl/articles/243953.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engines
air filters
filtration efficiency
flow drag
filter absorbency
effective parameters of the engine
mechanical efficiency
Opis:: Specific features of air inlet system of BWP-1 vehicle UTD-20 engine are shown. The tests results of filtration efficiency and air flow drag for BWP-1 vehicle air filter standard version are presented. The necessity of UTD-20 engine air supplying system constructional changes are proved. The inlet air filtration system for BWP-1 engine with the porous filter was proposed and performed. The characteristics of the air purification efficiency (fi=f(mp) and flow drag Delta p- f(mp) Delta p= f(Omega c) for designed air filter were determined. Absorbency of filter for air nominal stream of engine BWP-1 was specified. The designed and executed partition air filter was subjected to comparative tests on an engine test bench. The influence of modernized air filter and fuel dose increase on engine effective parameters were determined. The tests covered comparison of effective parameters (determined for maximum load) of a UTD-20 engine equipped with a standard air filter (variant 1), a modernized air filter (variant 2) and additionally, for the modernized air filter, with injection pump with fuel dose increased (variant 3). There were determined the influence the proposed changes on indicated and effective torque during engine free acceleration and its mechanical efficiency as well.
Źródło:: Journal of KONES; 2010, 17, 3; 79-86
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Model testing of the internal leaks of valve body in automatic transmission
Autorzy:: Dziubak, T.
Szczepaniak, P.
Powiązania:: https://bibliotekanauki.pl/articles/246026.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: automatic transmission
hydraulic system
hydraulic precise pair
wear of hydraulic couplings
internal leaks
ATF fluid flow rate model
Opis:: The article presents the working conditions and the functions of the ATF fluid in an automatic transmission. It was noted that the correct operation of the automatic transmission is heavily influenced by the quality of the ATF fluid, which operates in disadvantageous conditions of oxidising environment, is subject to contamination and undergoes intense shearing, thus changing its physical and chemical properties during use. The analysis included the disadvantageous, from the point of view of loss of fluid pressure in the automatic transmission’s hydraulic system, phenomenon of the fluid’s flow through fractures (clearances) of the hydraulic precise pairs “called the rate of flow through internal leaks” or an “internal leak”. The model of the rate of flow through internal leaks was proposed to determine the impact of the precise pairs’ wear and the hydraulic fluid’s properties on the aggregated leaks in the hydraulic system controller of the automatic transmission. The modelling utilised the dependency between the rate of flow through internal leaks of the hydraulic precise pair and the coaxial circular fracture. The model’s assumptions were formulated. The values of clearances of the electrohydraulic controller’s precise pairs were determined during the measurements of the actual structure – based on the automatic transmission’s mileage. The measurements featured relevant diameters of pushers and sliders, as well as internal diameters of cylindrical openings of manifold sliders and hydraulic suppressors. Variant model testing was conducted with various degrees of the fluid’s wear and temperature (viscosity and density) for conditions of driving with transmission “1” and “2”.
Źródło:: Journal of KONES; 2017, 24, 3; 71-78
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Operations review of APC "Rosomak" chassis
Ocena użytkowa podwozia KTO Rosomak
Autorzy:: Wysocki, T.
Micewicz, P.
Dziubak, T.
Powiązania:: https://bibliotekanauki.pl/articles/243134.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: kołowy transporter opancerzony
ocena użytkowa
właściwości ruchowe
armoured personnel carrier
operational appreciation
mobility property
Opis:: Powodzenie w działaniach na współczesnym polu walki zdeterminowane jest wieloma czynnikami. Jednym z nich jest zapewnienie szybkiego, terminowego i nieoczekiwanego dla przeciwnika transportu żołnierzy. Pojazdy opancerzone, przewożące pododdziały w warunkach pola walki, powinny posiadać zdolność dojechania na stanowiska ogniowe, które mogą być położone w terenie, gdzie nie ma dróg utwardzonych a teren jest pofałdowany, górzysty lub podmokły. Zatem przystosowanie do pokonywania przeszkód terenowych przez pojazdy opancerzone powinno wynikać z ich ogólnego układu konstrukcyjnego, proporcji wymiarowych i masowych oraz z zastosowania specyficznych rozwiązań konstrukcyjnych w układach jezdnych i napędowych. Jednym z kryteriów oceny użytkowej kołowego transportera opancerzonego (KTO) są jego właściwości ruchowe, zwłaszcza w terenie. Można jednocześnie formułować różne, często odmienne, szczegółowo ukierunkowane kryteria oceny użytkowej jednego lub w celach porównawczych kilku KTO. W przypadku kryteriów o charakterze ilościowym możliwe jest otrzymanie globalnej ilościowej oceny użytkowej oddzielnie dla każdego KTO, co stwarza obiektywne warunki do porównawczej oceny ich konstrukcji. W referacie przedstawiono propozycję metodyki oceny użytkowej podwozia współczesnego kołowego transportera opancerzonego (KTO), którą oparto na rachunku wskaźników liczbowych. Wykorzystując sformułowane wskaźniki dokonano porównawczej ukierunkowanej i globalnej oceny użytkowej KTO Rosomak, którą odniesiono do innych współczesnych KTO.
A success in present combat field operation is determined by many factors. One of them is assuring of rapid, term and unexpected for the enemy troops transport. Armoured vehicles, transporting troops in combat field, should have an ability to reach gun sites, which may be placed in terrain, where are no hardened ways and terrain is undulating, mountainous or boggy. Armoured vehicles adaptation to terrain obstacles covering should result from their construction system, dimensions and mass' proportions and construction solutions of driving system and running gear. One of the criterion of operational appreciation of armoured personnel carrier (APC) is its mobility property, especially in terrain. Various and specialized in many details usable assessment criteria of one or a few (in comparison) KTO might be simultaneously formulated. In case of quantitative criteria it is possible to receive a global usable quantitative assessment for each KTO individually, what makes objective conditions to comparative assessment of their construction. In the paper there is presented a proposal of method of operational appreciation of modern armoured personnel carrier (APC) chassis based on numeral indexes. Using the defined indexes there was made the operational appreciation of APC Rosomak, which was compared to other modern APC's.
Źródło:: Journal of KONES; 2007, 14, 2; 579-590
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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