Autor: Bartnicki, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Strength tests of folding bridges spans
Autorzy:: Bartnicki, A.
Powiązania:: https://bibliotekanauki.pl/articles/243707.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: hydrostatic drive systems
support and assault bridges
mMLC class
Opis:: The restoration of the road infrastructure to its earlier state is a long and costly process and it is often the case that local government authorities cannot afford it. Due to this, alternative solutions are sought, which will shorten to the minimum the time dedicated to reconstructing destroyed parts of roads and bridges on one hand and which will constitute an economical solution on the other. A good idea for achieving the former and the latter at the same time seems to be the utilization, in the process of rebuilding permanent bridge crossings, of the military folding bridges' elements which have been withdrawn from use in the engineering subsections of the Polish Armed Forces. This paper presents non-military applications of military folding bridges, with special attention to strength tests thereof. It describes currently applied Polish and foreign methods of testing this type of bridge crossings and introduces a new method, indicating further development in this field.
Źródło:: Journal of KONES; 2011, 18, 1; 47-52
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The modelling of transfer influence vehicle from ground surface on objects in placed
Modelowanie oddziaływania pojazdu na minę umieszczoną w gruncie
Autorzy:: Kuczmarski, F.
Bartnicki, A.
Sprawka, P.
Powiązania:: https://bibliotekanauki.pl/articles/241655.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: miny
grunt
oddziaływanie dynamiczne i statyczne
modelowanie
mines
soil
static and dynamic loads
modelling
Opis:: This paper describes the initial model of the load-mine-ground relation and presents the preliminary results of a computer simulation. Pressure mine-clearing devices, with discs loosely embedded on the axis of the minesweeping section, (disc mine-clearing devices) cause deformation to the mine 's firing mechanism, which, through the actuation of the fuse, leads to the detonation of the inner-placed explosive. It is assumed that under the load of a mine clearing vehicle, the active part of the mine's cover will be vertically displaced by 6-10 [mm] actuating the fuse of the mine. Although the construction parameters of pressure mine-clearing devices are known, there is a shortage of instructions and data requisite for proper construction and effectiveness examination of dynamic mine-clearing vehicles. In fact, during mine clearing with a dynamic mine-clearing device, the force exerted upon the mine (Ngr) is that of the pressure by the disc (an element of the device). This force differs from a static load and the differences result from the following factors: mine placement type of soil as well as its physical and mechanical properties construction properties of a mine-clearing device pace of mine clearing The issue of influence transferred from the surface of the ground onto the mine placed inside is not present in literature and it constitutes an interesting and important scientific issue in terms of selecting parameters for dynamic minesweeping devices. Similarly to a static load, shock waves propagating within the ground cause its volumetric and structural deformations. The main cause of the differences lies in the briefness of a dynamic load. The gradual growth of static loads (clenching) causes displacement of air and water in the pores and their partial squeezing out. In the case of a static load applied to sandy soils, the process lasts from a few minutes to a few hours, whereas in the case of clay and loessial ones, it extends to a few days, weeks or, sometimes, even months. Under static and dynamic loads, the ground reacts similarly to a three-component centre with a changing-with-time amount of air and water. The action time of a percussive load extends from a few to between ten and twenty milliseconds. Due to air and water inertia, this is too short a period of time to squeeze them out of the pores of the soil, which reacts in a way similar to a three-component centre with a constant amount of air and water. Since in unhydrated soils the main part of the pores' volume consists of air, both static and dynamic loads are accompanied by the absorption of the main stresses by the skeleton. With static loads exerted upon the hydrated soil, both water and air flow loosely out of the pores without the absorption of the loads. In terms of strength the only working element here is the ground's skeleton. In the case of short-lasting, intense loads, water (with a small amount of trapped air) will not flow out simultaneously with the skeleton and, as in the case of mean pressures, it may absorb the load to a larger extent than the skeleton itself. The way the hydrated ground reacts to low pressures - below 1 MPa - is therefore largely determined by the amount of air in the pores. Therefore, the ground with a mine placed inside is a multiphase center with changeable properties - the semi-limited area with mechanical properties changing with each cycle of dynamic influence put upon its surface. Although the issue of the ground pressure measurement is dealt with in various publications, there is a lack of data concerning how it changes under the mechanical influence of moving vehicles and under that of dynamic minesweeping devices - the problem which is essential for a safe minefield crossing. The effectiveness of percussive minesweeping devices can be evaluated upon the basis of the experimental data obtained by means of measuring equipment. The elaboration of a reliable ground-mine relation model for short-time (percussive) influences transferred to the ground surface should accelerate the process of selecting parameters for dynamic mine clearing in terms of obtaining the maximum destructive impact, either directly upon the mine or through the actuation of its firing mechanisms for various types of mines, different depths at which they are buried as well as for various soils with their different properties. The above task is the aim of further works focusing on the subject presented in this paper.
Źródło:: Journal of KONES; 2007, 14, 1; 245-253
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Concept and development of engineer mission support robot
Autorzy:: Bartnicki, A.
Łopatka, J. M.
Muszyński, T.
Wrona, J.
Powiązania:: https://bibliotekanauki.pl/articles/246011.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: Unmanned Ground Vehicles
robot
human machine interface
Opis:: Contemporary battlefield is more and more demanding environment after all for soldiers but also for their equipment and machines that assist them. Looking at the last Lessons Learned experience we can conclude that the most dangerous threats met during last asymmetric warfare were Improvised Explosive Devices (IEDs). Therefore, the main focus is being done to equip UGVs with efficient engineering equipment that allows operating very quickly in very dangerous environment being exposed to health risks and loss of human life, within more and more sophisticated engineering support missions with special regard just to EOD/IED missions. The concept of such an engineering robot design is described in this paper. The EOD/IED mission support engineer robot, the attachments of the EOD/IED mission support engineer robot, removal of car bombs by means of the robot’s attachments, the EOD/IED mission support engineer robot’s ability to overcome terrain obstacles, the mission support engineer robot’s remote control panel are presented in the paper. Technological and Operational Problems Connected with UGV Application for Future Military Operations was held in Rzeszow, Poland on 20-22nd April 2015.
Źródło:: Journal of KONES; 2015, 22, 3; 263-268
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Concept of IED/EOD Operations (CONOPs) for engineer mission support robot team
Autorzy:: Bartnicki, A.
Łopatka, J. M.
Muszyński, T.
Wrona, J.
Powiązania:: https://bibliotekanauki.pl/articles/242713.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: Concept of Operations
Unmanned Ground Vehicles
robot team
Opis:: Concept of Operations is the first tool being used in capabilities approach to define military needs being very important task in the beginning of the Life Cycle Management process. The inputs to this process are defined based on the scenarios resulting from the Lessons Learned experience. It creates the technology needs for the new military systems and simultaneously the links between militaries, scientists, designers and producers. The success of missions at the very dynamic contemporary battlefield will heavily dependent on functionality engineering forces taking part in them after all at the very low level of command. The main task of engineering forces that are realized within the convoy protection mission aims at greater soldiers’ safety. The efficiency of convoy protection demands a systemic approach and the need to build the system of remote controlled Unmanned Ground Vehicles (UGV). The design of Improvised Explosive Devices (IED), after all their initiating systems, makes Explosive Ordnance Disposal (EOD) missions practically impossible to be realized by humans. The concept of systemic approach to use the remote controlled Unmanned Ground Vehicles for convoys’ protection based on Lessons Learned experiences is presented in this paper.
Źródło:: Journal of KONES; 2015, 22, 3; 269-273
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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