Different methods of range optimization have been considered: theoretical practical and theoretical-practical methods. The best-known of theoretical methods is the energy method. In the energy method, differential equations of aircraft flight path are so formulated to give optimum aircraft flight profile or maximum aircraft range. The practical methods are experimental graphic and tabular method. The computer method is a method that comprises both theoretical and practical methods. The computer method uses the experimental data to linearize the nonlinear system of differential equations of aircraft flight. Adaptation aircraft attack-navigation system by computers enables faster range calculations on different flight profiles and different suspended strapped-down weapons.
An approach to creating an expert system for evaluating equipment losses in combat actions has been described in this paper. In loss evaluation there is a high degree of uncertainty and ambiguity. Therefore, the mathematical tool-fuzzy-logic has been applied. This easily applicable system anticipates the size and the structure of losses thus enabling the operating maintenance plan to be prepared in due time as well as the anticipation of necessary resources for maintenance organization in a particular period.
The aim of work was to measure the entire noise level and to accomplish the octave analysis as well as to measure ultrasound and infrasound levels inside and around two types of helicopters. The results of measurement showed that the entire noise levels (92 dB(A) -113 dB(A)) and octave sound level pressures in the observed work regimes of helicopter motors exceed the permissible levels. The spectrum analysis of infrasound showed that it does not exceed the permissible levels in any octave band. The spectrum analysis of ultrasound showed it exceeds the permissible level only in the third octave band with the mid frequency of 20 kHz around the second type of helicopter.
Acoustic signature of maritime targets (war-ships or submarines) for underwater weapons (mines) has been realized. The acoustic field of the ship as well as its appearance and its characteristic have been studied, along with the explanation and display of the dependence on certain parameters. The elements of the structure of acoustic field of the ship - submarine and sea noise are described as well as their relating in order to differentiate useful signals from the ambient noise.
Development and the organization of the Internet as a global computing network have been discussed including the institutions which provide coordination and functioning of its services. The paper presents the concept of the Intranet as an internal information, system based on the use of Internet technologies and consumer-server architecture of local computing networks.
This paper deals with a mathematical basis used for formatting the Digital Models of Relief (DMR) of the Earth's physical land surface. The theoretical and mathematical basis is described and mathematical expressions for approximation of the lines and surface elements in formatting relief's space structural features are given. These expressions are significant for the selection of appropriate solutions while using computer support in the DMR making procedure. The selections depend on their application and a required accuracy.
Modern blasting agents are new commercial explosives. Classification, brief history of commercial explosives, characteristics and use of modern blasting agents are presented as well as their military use. Modern blasting agents could replace powder commercial explosives.
Level crossings represent bottlenecks from the aspect of vehicle capacity as one of basic parameters for traffic flow. From the railway traffic aspect they represent weak points on railway tracks due to rails exposure to the dynamic influence of road vehicles. In order to protect traffic safety appropriate triangles ought to be provided for railway tracks in direction as well as for tracks in curves and low trenches. Participants in road traffic are more in danger than participants in railway traffic. On level crossings with intensive dynamic of railway traffic time and material losses in road traffic are more significant. All aspects of these specific bottlenecks are treated in this paper as well as their effects on military road transportation.
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