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Wyświetlanie 1-3 z 3
Tytuł:
Unmanned aerial vehicles in the protection of the elements of a country’s critical infrastructure – selected directions of development
Autorzy:
Bielawski, Radosław
Rządkowski, Witold
Perz, Rafał
Powiązania:
https://bibliotekanauki.pl/articles/576505.pdf
Data publikacji:
2018-12-20
Wydawca:
Akademia Sztuki Wojennej
Tematy:
security
critical infrastructure
unmanned aerial system/vehicle (UAS/UAV)
programme “Świerszcz” [English: “Cricket”]
Opis:
This paper explores the directions for the application of unmanned aerial vehicles in the provision of security to vital elements of a country’s critical infrastructure. The analysis focuses on two paths of development: the first one refers to the transportation system, the latter is related to the gas supply network – the basic components of a country’s critical infrastructure. The first section of this paper will examine the current state of knowledge in the field, and is designed as a reference of terminology pertaining to unmanned aerial vehicles (definitions and classification). The section shall furthermore provide a basis for and a contribution to the developed conceptual-semantic framework for UAV research. The first direction of development is described in terms of the characteristics and assumptions of the system; this includes an overview of the specific requirements of the unmanned platform itself, as well as the elements of the system, such as a local monitoring centre and other components. Furthermore, this section provides the overview of the designated mobile application, whose development is expected to improve the efficiency of system operation, which is a conceptual novelty considering similar developments. The second direction concerns the development of an unmanned system of production, storage, and use of chemical and radioactive substances, including pipelines for hazardous substances. The programme that fits perfectly in the framework of the second considered branch of development is “Cricket” [Polish: “Świerszcz”] – a programme implemented in the periodic inspection of gas supply infrastructure. The description of the programme in question included specifying the technical and operational requirements for the fight devices as well as for the equipment.
Źródło:
Security and Defence Quarterly; 2018, 22, 5; 3-19
2300-8741
2544-994X
Pojawia się w:
Security and Defence Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Validation of Key Parameters Between Real and Computer Model of Suspension System Used in FSAE Vehicle
Autorzy:
Ziemba, Krzysztof
Tracz, Jan
Rządkowski, Witold
Kowalik, Michał
Powiązania:
https://bibliotekanauki.pl/articles/102156.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
multi-link suspension system
validation
vehicle kinematics
FSAE
wielowahaczowy system zawieszenia
uprawomocnienie
kinematyka pojazdu
Opis:
The aim of this paper was to determine the differences in the designed and manufactured model of a suspension. A set of key parameters was compared, including camber and toe in angles and their change w.r.t wheel travel, as well as the motion ratio. It also focused on the possibility of accurately determining the suspension system kinematics using affordable measuring devices available on the market. First, the design process, main goals and project assumptions were briefly described. Next, the CAD model and manufacturing process was presented. Finally, the measurements of both computer and real model were performed. The obtained results were compared and a significant difference between models was observed. The reason of such variation could not be determined unambiguously, as there were numerous factors that could potentially influence the results. Moreover, it was proven that accurate determination of kinematics is impossible using the given set of measuring devices.
Źródło:
Advances in Science and Technology. Research Journal; 2020, 14, 3; 65-74
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Case Study of Composite Chassis Manufacturing Process Using Low Temperature Molds Tempered with Gradual Heat Annealing Process
Autorzy:
Rządkowski, Witold
Klik, Przemysław
Tracz, Jan
Kowalik, Michał
Powiązania:
https://bibliotekanauki.pl/articles/2201751.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
monocoque
manufacturing
out-of-autoclave
manufacturing process
gradual heat annealing
Opis:
This case study describes a manufacturing process of composite chassis also known as monocoque. The structure is made using carbon fibre reinforced polymers (CFRP) which are manufactured in out-of-autoclave (OOA) process from pre-impregnated carbon fabrics and aluminium alloy honeycomb core. Since the material cost is high the aim of the project was to reduce the cost of manufacturing process i.e. cost of models and moulds. Therefore, instead of high-temp models and moulds a cheaper alternative was used. It consisted of Styrofoam models made using polyurethane (PU) paste and moulds made from CFRP using wet layup process which were cured at room temperature. Such moulds had to be adapted to withstand high temperatures during pre-preg cure. This was done with gradual heat annealing process which increased the maximum service temperature from 45C to 90C. This was enough for the low-temp cure of pre-preg material, but it might be possible to increase the temperature even further. As a result, the cost of manufacturing process had been reduced by 50%.
Źródło:
Advances in Science and Technology. Research Journal; 2022, 16, 3; 12--21
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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