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Wyszukujesz frazę "military vehicles" wg kryterium: Temat


Tytuł:
Feasibility study of military vehicles in short mode
Autorzy:
Simiński, P.
Powiązania:
https://bibliotekanauki.pl/articles/246656.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
road safety
simulation
military vehicles
Opis:
The paper presents the methodology prepared by the author. During the process of acquiring new vehicles for the armed forces, time is of the essence in practice of conducting a wide range of structure changes in previously implemented undercarriages. It has to be pointed out that with a high individuality and the very nature of the units, difficulties in scope of comprehensive testing with regard to matters of transport safety. What is more, two determinants are essential in the process of acquiring equipment - time and cost. The process does not allow for improvement and perfecting of the structure, and the research in scope of wheel vehicle movement safety may be limited. The procedure of implementation and verification of equipment stresses the structure optimization as early as on the designing and prototype preparation stages. The procedure of acquiring new wheel vehicles for the military is one of the main premises for preparing the methodology with use of simulation research. Conducting research on the basis of the prepared methodology allows for avoiding possible traffic risks. The methodology enables an effective support for the current process of wheel vehicle acquisition for the armed forces. In this work the research procedure consisting of the necessary range of prepared, experimentally verified models, accepted by the methodology, have been verified. In order to do that two simulation models have been built, both of various levels of complexity.
Źródło:
Journal of KONES; 2012, 19, 2; 501-506
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Applying performance data of military vehicles as a source of verification of technical specifications and criteria for implemented military equipment
Autorzy:
Konczak, J.
Walkiewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/30147073.pdf
Data publikacji:
2018
Wydawca:
Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:
technical criteria
military vehicles
mileage tests
Opis:
In the article the authors have attempted to analyze the specifications and criteria imposed on military vehicles acquired by the Polish Armed Forces. The issues of selection of the target operation standard, interval between periodic maintenance inspections, fault tolerance and reliability, which are defined in tactical-technical criteria by administrators, were addressed. The technical specifications are the essential component of qualification studies. The data obtained from research of prototypes and the initial years of exploitation of the new military equipment (SpW) constitute the source of verification for technical-tactical criteria (ZTT) or initial technical-tactical criteria (WZTT) adopted for implementation. The article also discusses the issues related to estimation of probability of the tasks to be executed by military vehicles in typical operating conditions depending on the lifetime, mileage or method of storage. Presumable combat losses, which are independent from the adopted operation system of the military equipment, have been omitted. The research works in the field of reliability are conducted in the Armored Fighting Vehicles Laboratory of the Military Institute of Armored and Automotive Technology in Sulejówek. Additionally, the authors have addressed the possibility of the application of computer simulation for the purpose of military vehicles reliability.
Źródło:
Scientific Journal of the Military University of Land Forces; 2018, 50, 3(189); 166-180
2544-7122
2545-0719
Pojawia się w:
Scientific Journal of the Military University of Land Forces
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conception of military vehicle classification
Autorzy:
Sosnowicz, R.
Wachowiak, P.
Dorczuk, M.
Powiązania:
https://bibliotekanauki.pl/articles/244423.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
classifications
military vehicles
conception
structure
combat vehicles
special vehicles
Opis:
This study presents the vehicle classifications existing in various documents: „The Encyclopaedia of military Technology”, The Polish Norm PN-V-01002: „Armoured Equipment. Parameters and comparative ratios. Terminology and classification”, Structure of Car Transportation of Polish Armed Forces, The Defence Equipment Classification, The Allied Research Procedures Publication AVTP 00-07 „Military Vehicles Categories” (STANAG 4357 and 4358), The Common Procurement Vocabulary, established by the European Commission) and Fixed Assets Classification. The authors of the article take note of the inaccuracies in existing classifications and point out the necessity to create new, logical error free classification. The conception presented in the article is an attempt to put this situation in order. Presented conception of classification vehicles used in the army, primarily as weapons carries, necessary combat and logistics equipment, and also as means of transport and protection of sub-units of infantry, in order to eliminate chaos in military vehicle nomenclature used in documents such us: acts, regulations, norms and instructions. The conception characterizes certain level of generalization. For further detailed division can be used criteria named in the article: general criteria and particular criteria.
Źródło:
Journal of KONES; 2011, 18, 1; 585-594
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the military vehicles operating process by means of Markov processes
Autorzy:
Żurek, J.
Borucka, A.
Ziółkowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/245001.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
operation
Markov processes
military vehicles
Military Economic Units
Opis:
The article presents the method of analysing the operating process of Star military vehicles in their readiness aspect. The subject of research was the Military Economic Unit, recently created in the Polish Army. Markov processes were applied. A simple 5-state model was built, and the research was made in a discrete, as well as continuous time. The limit probabilities, both for the chain and the time, were estimated. Thanks to Chapman-Kołomogorov-Smoluchowski equations, the long-term projections could be estimated. To ensure of operating processes, correctly object’s permissible transitions from the previous state to the next one were chosen. It was defined based on technical documentation and owned operational knowledge on the considered operating process. The mathematical description of a set of permissible transitions includes a matrix of permissible Si → Sj transitions from the previous state Si (lines) to the next one. The five-state system has possible and forbidden transitions are presented. Graph of permissible transitions for the five-state operation model usage, standby, maintenance, repair, standstill in repair; correlogram for the average duration of the state; evolution of the probability of the Star cars’ staying in the state of usage, standby, maintenance, repair, standstill in repair are presented in the article.
Źródło:
Journal of KONES; 2016, 23, 2; 443-453
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of impact of the deflector shape on effectiveness of weakening the blast wave originating from a mine or IED
Autorzy:
Panowicz, R.
Nowak, J.
Konarzewski, M.
Powiązania:
https://bibliotekanauki.pl/articles/244439.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
finite elements method
simulation
military vehicles
deflector
Opis:
The situations which our forces faced during various stabilization military missions showed that light armored vehicles are not secure enough in the case of the mine or improvised explosive devices explosion. Nowadays, the primary way of protection against this type of threat is application of a V-shape bottom in the vehicle. Such a configuration of the bottom allows dissipation of explosion energy whereby the impulse, which is transmitted to the construction – the vehicle bottom or frame, has a much lower value than in the case where the bottom is flat. In the literature it is possible to find the results of model tests on an experimental laboratory test stand. These studies show that the value of the impulse which is transmitted to the structure depends on the shape of the deflector, actually on its angle. Assuming the above condition, there were performed numerical analyses of the values of the impulse transmitted to the construction for deflectors with different angles and for a variety of loads masses. The aim of the numerical analyses was to find the optimal angle of the deflector for the considered situation. In this model, the optimal value of the angle is that in which the considered value of the impulse transmitted to the construction reaches the minimum value. For this purpose, there was made a finite element model of deflector corresponding to the conditions of the experiment. The shell elements were used in this model. The model was loaded with a pressure impulse derived from the detonation of an explosive. The blast wave interaction with the structure was modeled using the fluid structure interaction. The numerical analyses were based on the finite element method with the explicit time integration method implemented in the LS-DYNA program.
Źródło:
Journal of KONES; 2013, 20, 2; 329-334
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Innovative run flat systems
Autorzy:
Stryjek, P.
Nikisz, T.
Omyliński, K.
Ejsmont, J.
Powiązania:
https://bibliotekanauki.pl/articles/244695.pdf
Data publikacji:
2015
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
military vehicles
RUN FLAT tires
composite wheel
Opis:
One of the most essential threats to the mobility of wheeled vehicles is their relatively high sensitivity to tire damage. Tires can be damaged as a result at vehicle-targeting fire, after running on a mine or an improvised charge. The purpose of the article is to analyze the current technical solutions in wheeled vehicle tires, allowing for the unobstructed use of the vehicle despite the damage of one or several tires (RUN FLAT systems). Since RUN FLAT systems have become increasingly popular in passenger cars as well, the article contains partial references to civilian solutions. One should remember that RUN FLAT systems are not only to guarantee vehicle mobility following the loss of pressure in the tire in straight-line motion, but also crew safety providing sufficient driving level and stability at longer distances. The article presents solutions of this type, applied not only in military vehicles, but also considers research-structural works implemented by ROSOMAK S.A. in cooperation with other centres. The works presented in this article were financed by ROSOMAK S.A. and National Research and Development Centre (NCBiR) (project SPB – RolRes, agreement no PBS1/A6/1/2012).
Źródło:
Journal of KONES; 2015, 22, 1; 299-306
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Operational tests of braking systems for high mobility vehicles
Autorzy:
Kupicz, W.
Siminski, P.
Powiązania:
https://bibliotekanauki.pl/articles/949514.pdf
Data publikacji:
2015
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
road safety
mobility
military vehicles
braking systems
Opis:
The article presents the results of comparative tests of the experimental designs of the braking system of high mobility vehicles. Braking systems determine the safety of vehicles. Higher mobility requirements should not remain without an effect on adapting the braking system to the use conditions. Article developed within the scope of execution of the NCBiR project DOBR-BIO4/021/13355/2013. The mileage tests lead to a thorough evaluation of the various systems of the vehicle. In order to carry out the mileage test correctly, the vehicle has to be exposed to the most difficult conditions to which it is adapted to, according to the preliminary assumptions. In the case of military vehicles, the most difficult terrain is the training ground terrain with frequent bumps, uphill’s, downhill’s and water hazards, etc. The vehicle has to be operated at the maximum use of all its components (inter-wheel and inter-axle locks etc.). Only the vehicle that has been properly tested, and meets all the assumptions for a given object can be considered safe.
Źródło:
Journal of KONES; 2015, 22, 1; 167-172
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electronic engine control systems in modern vehicles in aspect of using it in military combat and logistic vehicles
Autorzy:
Stryjek, R.
Motrycz, G.
Powiązania:
https://bibliotekanauki.pl/articles/241546.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engines
electronic control unit
military vehicles
Opis:
Because of much more restricted norms about polluting gas emission in modern vehicles, there is a need to make better control of fuel combustion. The process of fuel combustion is controlled by electronic control unit (ECU). The unit is analysing signals from many sensors, and when the control unit is not able to correct mistakes in fuel combustion, it turn on a warning indicator light and alarming a driver that the emission of polluting gas is too high. The problem is, that the hole system is undependable. The level of complicated of the system is high. In military vehicles, suddenly lost of power of an engine, because of some little mistake in emission control system, in combat conditions could be very danger. Off course, some armoured vehicles has special program in ECU, but most of the military vehicles are built on civilian vehicles, without any changes. The paper show potentials danger in modern electronics controls units of engines. The authors has also practice not only in vehicles testing and service, but also in preparing sport vehicles for rally. The sports programs for ECU in rally vehicles, allows for example for drive with the full power of the engine, even if the temperature of the cooling system is very high, and in normal vehicles, the ECU would not allow to work in such a condition.
Źródło:
Journal of KONES; 2013, 20, 4; 435-440
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Environmental protection and technical tests of military off-road trucks
Autorzy:
Kowalski, M.
Powiązania:
https://bibliotekanauki.pl/articles/949508.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
diagnostics
military vehicles
systems responsible
polluting the environment
Opis:
This paper presents the most vital parts of technical tests of military vehicles in relation to environmental protection. The presented method is based on the most popular military off-road truck of the Star 1466 type. It includes a diagram showing the parts of the test of this vehicle from the perspective of environmental protection whose sequence is not imposed. What is solely required is that all these parts are executed - in accordance with the applicable provisions. For this purpose, the paper presents the methodology (whose major parts are described) of testing the vehicle complying with the requirements of environmental protection. Furthermore, it outlines the process of checking leakages of exploitation fluids, smoke opacity, measurement of external noise of this vehicle and the measurement of the level of an acoustic signal. The description of particular checks is based on the applicable provisions and regulations, as well as on typical and commonly available measuring instruments. It is stressed how important it is to maintain and follow the technical parameters - concerning the systems (units) responsible for polluting the environment - which are required by particular provisions and regulations. In the conclusions, the most crucial documents governing the organization of stations used for testing military vehicles, as well as methods and necessary equipment, have been presented.
Źródło:
Journal of KONES; 2014, 21, 4; 263-272
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reliability tests in the operation of military vehicles
Autorzy:
Przybysz, Kamil
Powiązania:
https://bibliotekanauki.pl/articles/1537404.pdf
Data publikacji:
2021
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
reliability
operation
military vehicles
niezawodność
operacja
pojazd wojskowy
Opis:
Reliability studies in the operation of military vehicles are not carried out extensively. This is due to the guidelines of superiors regarding the keeping of operational records in military units. As a result, this work attempts to determine the reliability of military vehicles. This work includes reliability tests of military vehicles operated in military units in the second phase of operation, i.e. in the operation interval, where the extent of change in the intensity of damage is the least in the function of mileage. The study used a sample of 37 vehicles for which all operational events relevant to reliability determination were recorded during a two-year observation period. Using recorded operational data, an empirical reliability function of the vehicles included in the test sample was determined. Based on reliability tests of the reliability function as a function of mileage to damage, they show that second-phase vehicles used in military units have a logarithmic distribution of reliability as a function of mileage.
Źródło:
Inżynieria Bezpieczeństwa Obiektów Antropogenicznych; 2021, 2; 7-11
2450-1859
2450-8721
Pojawia się w:
Inżynieria Bezpieczeństwa Obiektów Antropogenicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Device supporting military vehicles buoyancy and ballistic resistance
Autorzy:
Derewońko, A.
Sławiński, G.
Niezgoda, T.
Powiązania:
https://bibliotekanauki.pl/articles/244644.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
FEM
ballistic protection
buoyancy
military vehicles
panels
elasto-plastic
Opis:
A deep modernization of equipment due to its assembling to the modern requirements of a battlefield and getting full compatibility to NATO structures caused that some military vehicles equipment with additional staff lose their buoyancy or are at the edge of losing it. The solution to this problem can be setting an additional device which helps to increase mass that allows to keep buoyancy of a military vehicle. The panels are fixed as the outer elements of the container which is simultaneously used for storing the elastic air cushions. Before the water crossing, the air cushions are filled with gas and additional buoyancy force is generated. The paper presents a structure and usage of a multipurpose ballistic protection which, in the passive state, is an additional armour and in the unfolded state increases buoyancy lost in the case of setting additional devices or armament. In the paper, initial simulations developed with the use of Ls-Dyna software are described. The influence of modules number of the air cushion on the buoyancy of the multi-purpose ballistic protection is considered. The advantage of the solution is possibility of the chamber volume change which causes the increase of device volume of the whole module of the chambers is dependent on the vehicle buoyancy which results from its current weight.
Źródło:
Journal of KONES; 2011, 18, 1; 129-134
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of destructor case type on behaviour of fragments in military vehicles active protection system
Autorzy:
Nowak, J.
Panowicz, R.
Konarzewski, M.
Powiązania:
https://bibliotekanauki.pl/articles/243721.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
finite elements method
simulation
military vehicles
directed fragmentation warheads
Opis:
Military vehicles active protection systems against cumulative missiles are designed to destroy the attacking missile before it hits the vehicle armour. The article presents the results of numerical studies of one of the elements of active protection system, which is the fragmentation destructor. A typical directed fragmentation warhead consists of a few parts: metallic or composite case, explosive material and fragmentation elements in the form of spheres, cylinders. The authors of this study evaluated the influence of the destructor case type – in particular material – on the effectiveness of the destructor. The effectiveness was evaluated on the basis of the maximum speed of balls. Evaluation was performed for the selected balls from each layer. Numerical calculations were performed for two materials of the case: steel and aluminum. It was assumed in simulation that the detonating material is the plastic explosive C4. The numerical analyses were based on the finite element method with the explicit time integration method implemented in the Ls-Dyna program. The interaction of solid and gaseous medium has been modelled using ALE coupling. Mechanical properties of the case were described using a simplified Johnson-Cook type material. The detonation process was described using programmed burn model approximations, and the behaviour of detonation products was described with the JWL (John, Wilkins, Lee) equation.
Źródło:
Journal of KONES; 2014, 21, 1; 183-187
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Armored carrier MT-LB and support vehicles produced on its basis in Poland
Autorzy:
Kajetanowicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/30147087.pdf
Data publikacji:
2018
Wydawca:
Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:
military vehicles
Polish Armed Forces
armored carrier
MT-LB
Opis:
The article presents the history of construction of the armored carrier MT-LB designed in 1960s in Kharkiv Tank Factory in the USSR. The serial production of the carrier in Poland and the involvement of Polish scientific and research centers in the preparation of its specialized versions is discussed. The individual versions of the carrier are characterized, streaming them according to: vehicles produced in Poland, prototype vehicles constructed in Polish scientific and research centers and vehicles obtained for the Polish Armed Forces under import. Furthermore, the article outlines the utilization of the MT-LB armored carrier and anti-aircraft missile launchers, engineering vehicles, armored recovery and command-staff vehicles built on its basis by the Polish Armed Forces’ units, drawing the attention to their role in process of technical modernization of the land forces.
Źródło:
Scientific Journal of the Military University of Land Forces; 2018, 50, 2(188); 61-87
2544-7122
2545-0719
Pojawia się w:
Scientific Journal of the Military University of Land Forces
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accelerated tests time of electronic parts used in military vehicles
Przyśpieszona analiza niezawodnościowa części elektronicznych używanych w pojazdach wojskowych
Autorzy:
Vintr, Z.
Valis, D.
Chaloupka, J.
Powiązania:
https://bibliotekanauki.pl/articles/348435.pdf
Data publikacji:
2013
Wydawca:
Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:
electronics
military vehicles
maintenance
accelerated tests
reliability
elektronika
pojazdy wojskowe
eksploatacja
testy przyspieszone
niezawodność
Opis:
This article tackles the accelerated reliability tests of electronic parts used in military vehicles and operated within the Army of the Czech Republic and the Czech Republic. Basic military parameters for newly acquired military vehicles are based on electronic parts, the reliability of which is essential for completing a mission successfully. In military conditions reliability evaluation tests observe the standard methods only. At present the relevant information about the reliability of electronic parts used in military vehicles along with the data on the trends of reliability measures development are not available at all. In the civilian sector (electrical and motor industry) the accelerated test time are used for showing the reliability measures of electronic parts. These processes have been developed in terms of statistics and standards. For military purposes it is possible to apply these civilian procedures of accelerated tests to the electronic parts of military vehicles, thereby minimizing the lack of information about the reliability of electronic parts used in military vehicles.
Artykuł przedstawia przyspieszoną analizę niezawodnościową dla części elektronicznych stosowanych w pojazdach wojskowych eksploatowanych w Armii Republiki Czeskiej. Podstawowe parametry dla nowo nabywanych pojazdów wojskowych określane są na poziomie niezawodności części elektronicznych, która gwarantuje skuteczną realizację misji. Ocena ta bazuje obecnie w warunkach wojskowych jedynie na standardowych metodach. Nie ma przy tym dostępu do istotnych informacji dotyczących niezawodności części elektronicznych stosowanych w pojazdach wojskowych, a w tym brak jest danych dotyczących trendów w rozwoju metod i sposobu pomiaru niezawodności. W cywilnych sektorach przemysłu elektrycznego i samochodowego stosuje się przyspieszone testy niezawodności komponentów elektronicznych, dla których zostały opracowane dane statystyczne i standardy. Również dla potrzeb wojskowych możliwe jest zastosowanie cywilnych procedur realizacji przyśpieszonych testów niezawodności części elektronicznych, dzięki czemu można uniknąć braku informacji o niezawodności omawianych komponentów stosowanych w pojazdach wojskowych.
Źródło:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki; 2013, 3; 145-151
1731-8157
Pojawia się w:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Functional availability studies of military vehicles in terms of operation intensity
Autorzy:
Przybysz, Kamil
Powiązania:
https://bibliotekanauki.pl/articles/1537510.pdf
Data publikacji:
2020
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
functional availability
reliability
operation intensity
military vehicles
funkcjonalna dostępność
niezawodność
intensywność operacji
pojazdy wojskowe
Opis:
Keeping vehicles technically suitable is strictly dependent on the intensity and nature of the damage. Determining the factors influencing functional availability comes down to investigating the causes of vehicle damage. Studies and analysis of the results have confirmed that functional availability for military vehicles can be estimated, taking into account vehicle intensity and reliability. The intensity of use may be taken into account by appropriate selection of layer tests, classified by intensity of use and by observing changes in functional availability with an increase in the number of trips, reflecting the intensity of use. Studies have found that the intensity of use in the range of average intensity of use of military vehicles does not significantly differentiate the level of availability.
Źródło:
Inżynieria Bezpieczeństwa Obiektów Antropogenicznych; 2021, 1; 48-54
2450-1859
2450-8721
Pojawia się w:
Inżynieria Bezpieczeństwa Obiektów Antropogenicznych
Dostawca treści:
Biblioteka Nauki
Artykuł

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