Vojnotehnicki glasnik / Military Technical Courier

9-25

Authors: Borović Siniša, Tanašćuk Nevenka

In the last phase of a tender process, the Commission has a problem with choosing the best bidder, i.e. the one whose offer meets the highest requirements in the Tender documentation. A decision has to be made taking into account many different, and very often contradictory, criteria. For solving this one as well as similar problems, numerous methods, belonging to the multicriteria analysis and ranking, are developed. Taking in to account the characteristics of a problem imposed by choosing the bidder in a Tender process, one of the mentioned methods, the method of analytical hierarchy process (AHP) has been chosen as a basic method for ranking bidders. For the performed ranking control, the PROMETHEE I-II, method family is proposed.

37-48

Authors: Đukić Dragan, Mišković Vasilije

Spare parts supplies stocks have a significant influence on proper functioning of combat vehicles in military operations. The form and quantifying of change of military vehicle readiness dependence on spare parts supplies will be recognized by applying the method of modelling and simulation. The basic factors influencing the readiness of combat vehicles are as follows: supply system structure, supply level for a given structure and probability of being supplied by spare parts at all supply levels. The most important result of the research is the knowledge of the basic factors influence, particularly the spare parts supplies influence on the combat vehicle readiness in military operations.

58-66

Authors: Ristić Zoran

This work presents some common forms of the orifice area in hydraulic recoil brakes and their basic characteristics. The analysis of the fluid flow coefficient and the flow resistance coefficient is performed for various geometry surface areas on the basis of experimental data. The methodology of determining the flow resistance coefficient and its influence on the hydraulic braking force has been given.

75-86

Authors: Gligorijević Radinko, Jevtić Jeremija, Borak Đuro

In the current decade of this millennium automobile manufacturers must achieve an additional twofold increase in fuel efficiency and a tenfold reduction of emission of CO2 and pollutants, especially NOX and particles. To achieve this goal, a new specification of engine lubricants, whose contribution to fuel efficiency and reduction of emissions cannot be neglected, is to be developed. Development trends in lubricants move towards low viscosity, low content of sulfur, phosphorus, sulfate ash and low volatility, resulting in emission reduction and increase of fuel efficiency.