Wyniki wyszukiwania - BazTech

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Logistyka jako czynnik dobrostanu nowej generacji

Banaszyk Piotr, Kauf Sabina, Szołtysek Jacek

Gospodarka Materiałowa i Logistyka

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2021

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nr 9

12--18

PL

W artykule przeprowadzono wywód uzasadniający stabilizującą rolę logistyki w osiąganiu dobrostanu w okresie zaskakujących i niespodziewanych zmian. Zaprezentowane argumenty bazują na zmieniających się w czasie związkach logistyki z dobrostanem, jak również na reaktywności logistyki na zmiany w otoczeniu.

EN

The article carries out an argument justifying the stabilizing role of logistics in achieving well-being in a period of surprising and unexpected changes. The arguments presented are based on time-varying relations between logistics and well-being as well as on the reactivity of logistics to changes in the environment.

2

Impact of a Used Stabiliser on the California Bearing Ratio of the Clayey-Sandy Silt

Kamińska K., Cholewa M., Moskwik K.

Journal of Ecological Engineering

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2017

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Vol. 18, nr 1

154--158

EN

The paper aimed at the determination of the California Bearing Ratio of a stabilised and unstabilised fine-grained mineral soil. A clayey-sandy silt with the addition of 3, 6 and 10% of road stabilisers Solidex and Solidex A was used for the tests. The tests were carried out in the press Tritech 50 at the loading of 22 and 44 N. The stabilised samples were subjected to 7-days treatment, whereas unstabilised 4-days treatment. Stabilization with the applied road binders brought positive effects, there occurred a significant improvement in the mechanical properties of the clayey-sandy silt. The better binder, which significantly increased the value of the CBR ratio, was Solidex A. The use of hydraulic binders is of a great importance in road building, because their addition improves the mechanical properties of weaker mineral soils.

3

Influence of the ballistic protection on aerodynamic helicopter characteristics

Wisniewski A., Wisniowski W.

Journal of KONES

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2016

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Vol. 23, No. 4

549--554

EN

This paper contains results of experimental tests of the influence of passive ballistic protection on aerodynamic coefficients of the model fuselage of the Sokol helicopter. The research was carried out in the Institute of Aviation low speed wind tunnel T3 of 5 m diameter on the helicopter test stand. Measurements of aerodynamic coefficients acting on the fuselage with and without passive ballistic protection were taken using six–component internal strain gauge balance placed inside the model of the fuselage for the angles of attack α = –90-90° with step 10° and for sideslip angles β = –10°, 0°, 10°. Several aerodynamics coefficients: drag (Cx), force (Cy), lift (Cz) and moment: bank (Cmx), pitch (Cmy) and yaw (Cmz) were analysed. The results of the wind tunnel tests were presented in figures as non-dimensional mean values of the above aerodynamic coefficients. Different measurements of aerodynamic characteristics were made like: the influence of Reynolds number on the Cx of the helicopter fuselage with and without protection and the comparison of aerodynamic characteristics of the helicopter fuselage Cx, Cy, Cz, Cmx, Cmy, Cmz as the function of α, without stabiliser, with and without protection. Moreover, a comparison Cx, Cy, Cz, Cmx, Cmy, Cmz as the function of α, with a stabiliser, with and without protection was made and a comparison of the influence of a stabiliser and protection on the above aerodynamic characteristics for the range of useful angles of attack were analysed. A comparison of the influence of a stabiliser and protection on aerodynamic characteristics of the helicopter fuselage Cx, Cy, Cz, Cmx, Cmy, Cmz for the range of α angles of attack was also described.