Vojnotehnicki glasnik / Military Technical Courier

253-265

Authors: Andrejić Marko, Ninković Željko

In this paper it has been presented organization of technical service support in joined tactical military unit, based on systemized recent experiences, existing normative rules and available theoretical knowledge. Technical service support units are considered as complex organization system from different standpoint. Using analytical - synthetical methodology it has been examined technical service support units deployment, work organization principles, individual workplace organization, spatial integration of service stations and sections, choice of units deployment regions and, work organization in station for supply and maintenance.

280-286

Authors: Radosavljević Zvonko

This paper considers comparative analysis the problem of maneuvering target tracking to IMM algorithm with 3 standard Kalman filters and same standard Kalman filter 6. order, using data from TWS radar. The first Kalman filter from IMM algorithms is tuned for tracking of target moving along the rectilinear trajectory -without acceleration, the second tracks the targets with acceleration and gentle maneuver, and the third Kalman filter tracks the target with acceleration and sharp maneuver. The mathematical model of algorithm and values of appropriate parameters and Kalman filter matrices, are presented. The results of RMSE of tracking in x and у coordinates, show the validity of the proposed method.

303-314

Authors: Pavlović Boban, Jevtović Milojko

In this article are presented architecture and characteristics analyze of the MPLS Network Simulator (MNS). MNS is used for design packet networks based on Internet Protocol (IP) which must support Real-time Traffic and Multimedia. In this document are presented and described simulation procedure for traffics -with different QoS and simulation for resource preemption.

326-334

Authors: Demić Miroslav, Diligenski Đorđe, Demić Ivan

In this paper, an active suspension system is developed by use of a vehicle plane model without feedback filters in control system. A method of stochastic parameters optimization has been utilized in order to optimize PI controller parameters. The basic optimization goal was a simultaneous minimization of sprung mass acceleration and standard deviation of forces in tire-to-ground contact area, so as to improve vehicle comfort and handling performances.

346-353

Authors: Trifković Dragan, Nikolić Radosav, Petrović Živojin

In this work the measuring method of torsion vibrations is presented according to the measurement of torsion stress using strain gages. This method is particularly suitable in checking the system elements strain level that transfers changeable torsion moments and oscillate torsionally. Besides that, the system elements critical velocity rotation can be estimated, folio-wed by the resonant strain and problems in the function of that system such as: amplified noise, -wearing-out of gears, fatigue crack, damage and break of shafts and junctions etc. The measuring chain is proposed in -which the central part is a contemporary mobile system Spider 8, -which enables measurement, processing and displays measured results on a computer.

125-134

Authors: Vasov Ljubiša

The technical system effectiveness, is a complex indicator of the system functioning quality, and depending on its basic purpose and the objective function, it encompasses different characteristics of the system and the maintaining process. The appropriate models of the effectiveness evaluation of the technical systems include all relevant parameters of the system functioning and they satisfy the objective function. Lot of the complex technical systems are established on the appropriate constructive and structural solutions, which in the case of failure of the specific components, provide only partial deterioration of the function quality evaluation of complex system, it is justified to take into consideration of the quantitative conditional indicator of the effectiveness, which discusses the influence of the mentioned partials failures.

140-156

Authors: Kokelj Tugomir, Regodić Dušan

The current methodology of calculation accuracy of the complete preparation of one indirect firing initial elements is very complex, impractical and not precise enough. In this -work one can find finishing of the current methodology of calculation as well as the appropriate software. In this -way all the drawbacks have been eliminated, and the process of the automation calculation has been done by means of computer. The analysis of the declared accuracy of the method of the initial elements complete preparation has been preformed and, based on that, certain conclusions and suggestions have been made and given.

168-177

Authors: Rodić Boško, Vuletić Dejan

The article deals with importance and trend of information systems in modern society. In the article are defined, beside survivability, other relevant ideas necessary for better understanding of the problems. Also, in the article are illustrated four aspects of information system survivability solution by Computer Emergency Response Team (CERT).

191-200

Authors: Nikolić Radosav, Nikolić Zoran

This paper -work presents the cavitation arises, causes of its appearing and consequences which it setup on materials. It represents the influence of cavitation on parts of marine Diesel engines cooled by -water, as -well as, influence of cavitation erosion on surface of the cylinder liner cooled by water. The focus of this paperwork is the influence of cavitation appearing on cooling surfaces of marine Diesel engines, and specially the influence of cooling fluid type, pressure and temperature on the loss of mass of models examined on cavitation in equal conditions and on the same device. Particularly performed analysis and comparison of cavitation destruction dependent on pressure and temperature of cooling fluid.

13-22

Authors: Jovanović Danko

The study presents basic tasks of a command at the operating level and logistic support bodies in operation planning. It stresses out the importance of estimating a situation, gathering information on enemy forces and possible effects on one's own forces, supply support and infrastructure. It also contains a useful memo with a help in calculating time needed for submitting proposals and intended for planning sector work at the corps command level.

36-50

Authors: Jurin Gordana, Pavlović Milorad

This paper presents a basic theoretical scheme and a mathematical model that is used to calculate jet aircraft noise level for certification purposes in accordance with the international standard ICAO Annex 16. In this process acoustic and nonacoustic data are used. The process also includes the procedure for eliminating ambient noise effects out of the aircraft noise signal. This procedure was applied in the case of noise measurement results for the G-2Ajet aircraft.

59-68

Authors: Šimić Goran

Owing to different functional possibilities, there are many content management systems (CMS) on the Web and in the local networks of different organizations. They provide administering of different information content (delegation of content authoring and content using grants), as well as dynamical content composing and distribution. They are focused on their content. Although there are technology prerequisites, these systems lack content personalization. This paper describes the possibility of the CMS functional extending to adjust data structure and content with particular users' skills, interests and demands.

76-85

Authors: Đorović Boban, Ljubojević Srđan, Dimić Srđan

This paper shows an approach to optimizing transportation processes by using the route model. For solving a problem of transportation process optimization -we present a savings algorithm and its modifications, -with a special emphasis on fixed costs of transportation means.

581-592

Authors: Radić Vlado N.

Competitiveness in military industry is a very important sign that military products have market chance. In this way, quality management has a great impact on market behaviour, market status and overall industrial success. Military equipment and weapons/ammunition are specific products of high quality and price. The military industry in Serbia and Montenegro has potentials to place good products with international standards, with a lower price and short time of delivery. Products of military industry of good quality have the characteristics of reliability, durability and esthetics. Quality assurance management is a key factor in a new orientation to market conditions, to industrial success and optimum working and economic conditions.

603-610

Authors: Parlić Trojan, Bukarica Vladimir

A PC-based system for measuring radio-device characteristics is described in the study. Necessary prerequisites for the realization of such a system are state-of-the-art programmable instruments with standardized interfaces for PC connection, a PC and an adequate software enabling the control of instruments, analysis and data presentation and storage. The study also gives the advantages of automated measurement when compared to a traditional one as well as the fulfillment of certain requirements of standard JUS ISO 9001:2001 concerning quality management systems.

622-632

Authors: Filipović Miloš

A suitable kinetic model for the chemical transformations of stabilizer (diphenylamine, DPA) in single base gun propellants was investigated and successfully verified. This model assumes that the chemical transformations of stabilizer in single base gun propellants occur in three concurrent steps - each represents a complex reaction, whose kinetics can be described by reactions of shifting order. It was found that the experimental data were well evaluated by a first-order reaction at high concentrations of diphenylamine in the propellant, but by a zero-order reaction at low concentrations during the final phase of the propellant life cycle. The kinetic parameters of this model permitting prediction of chemical transformations of stabilizer in single base gun propellants at storage temperatures, were determined. The mechanism of diphenylamine chemical transformations was discussed with relation to the model and the ageing behavior of these propellants.

641-648

Authors: Tadić Goran

There are several methods to assess existing organizational solutions within a scientific work organization. Which one is to be applied depends on what part of the organizational structure is assessed. This study gives the methods employed for assessment of organizational elements based on the assessment of the organization level of the organization structure of transport and communication service for Land forces corps. The complete methodology of this study is shown on the example of organization of transport and communication service within corps operations.

445-457

Authors: Vidović Milorad, Miljuš Momčilo

In their wider sense, location problems are related to locating one ore more objects in the area of certain dimensionality. In narrower sense particularly in logistics, these problems are related to locating resources warehouses, terminals,... Hence, these are problems of locating points in the two dimensional space. This sounds logical since for example, warehouse dimensions, may be neglected in comparison with the area where the object is located. The location theory deals with formulation and solving location problems. Such problems may be classified with respect to: number of objects location type (discrete - continuous), criterions, tasks realized by the system, objective function types applied solution methods, etc. This paper is organized to present the basic concepts in the location theory, defining fundamental problems and proposing general approaches to their solution. Some of typically military applications are also discussed.

467-475

Authors: Đedović Branko, Jakić Branislav

Economically and military strong industrial and technologically developed countries face rising crises and challenges as reactions which impose the need of strengthening the quality factor in defense technologies as a demonstration of military force and technological supremacy. Being in the relation of cause and effect, defense technologies and modern strategies complement each other. Fast technological changes require design and programming of quality key parameters in order to achieve an optimum goal through the synergy of technology and tactics. The operational expression of basic quality parameters reflects in the logistic support prerequisites for combat actions as well as for efficiency and combat readiness criteria. The quality management system in defense technologies enables a high-quality description and a reliable prediction of mission realization.

484-496

Authors: Todorović Jovan

The energy sector has to be changed radically. New energy sources and new fuels are necessary. The solution of these serious problems is found in hydrogen, which is the best and widely available fuel. Undoubtedly hydrogen is a basis for a new "energy age", so-called "hydrogen age". To achieve that it is necessary to develop systems for hydrogen production, distribution and supply, i.e. a new infrastructure competitive with the existing one, has to be build.

508-518

Authors: Unković Milovan

This work describes the operation principle, construction and characteristics of a ship fiber- optic gyrocompass. Main differences in the operation of the gyrocompass and a classical one are considered as well as the fiber-optic gyrocompass characteristics, given according to ISO 8728 standard and compared to the characteristics of their classical counterparts.

528-533

Authors: Vujičić Vladimir

A contemporary preservation procedure consists of air-tightening equipment and maintaining humidity in an air-tight area below the threshold value of susceptibility to corrosion. Humidity of the atmosphere can be eliminated by static and dynamic procedures.