UDC  621.391:621.396 BBK 39.57-5

Skrypnik O. N.

By HIL-simulating and mathematical modeling the author researched the characteristics of a navigation and timing field created by the GLONASS, GPS satellite navigation systems and the combined system. HIL-simulation experiments were carried out using the hardware and software of CH-3803M simulator and CH-4312 aircraft receiver. The problems of using integrated receivers are revealed. On the basis of a program developed in LabVieW environment the technique of constructing the fields of GLONASS precision in the horizontal and vertical planes using the values of the geometrical factors is proposed.

Keywords: satellite navigation system, GPS, GLONASS, geometrical dilution of precision, navigation and timing field, modelling, precision.

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UDC 004.588 BBK 74.5

Chokoj V. Z.

Рассмотрены математические подходы к первичному анализу статистических данных по наблюдаемым процессам и подбора для них адекватных теоретических распределений, а также оценке параметров подобранных распределений. Представлен обзор авторских компьютерных средств (инструментов) решения перечисленных задач описательной статистики. Рассмотрены основные интерфейсные решения по инструментам и показания по их применению в образовательной, инженерной и исследовательской практиках.

Ключевые слова: наблюдаемый процесс, описательная статистика, статистические показатели, эмпирическое распределение, закон теоретического распределения, критерии проверки гипотез.

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UDC 629.118 BBK 39.0

M. Vlkovský, H. Vlachová

Brno, the Czech Republic

The paper deals with results of the performed transportation experiment and their interpretation. The aim of the transportation experiment is to find out the size of inertial forces in section of ordinary road (I. and II. class roads) in the Czech Republic with regard to cargo securing during transportation. The paper further deals with importance of knowing inertial forces for selection of fastener and way of fixation and also advantages, resp. disadvantages of using normatively set acceleration coefficients.

Key words: transportation experiment; cargo security; inertial forces; acceleration coefficients

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UPEVŇOVÁNÍ NÁKLADU NA VOJENSKÝCH NÁKLADNÍCH VOZIDLECH – PŘEPRAVNÍ EXPERIMENT

Článek předkládá výsledky provedeného přepravního experimentu a jejich interpretaci. Předmětem přepravního experimentu je zjištění velikostí setrvačných sil na vybraném úseku běžné komunikace (silnice II., resp. I. třídy) v České republice s ohledem na upevnění nákladu při přepravě. Článek dále rozebírá význam znalosti setrvačných sil pro volbu upevňovacího prostředku a způsobu upevnění a výhody, resp. nevýhody využití normativně stanových hodnot koeficientů zrychlení.

Klíčová slova: přepravní experiment; zajištění nákladu; setrvačné síly; koeficienty zrychlení.

UDC 004.588 BBK 74.5

Chokoj V. Z.

The paper reviews the approaches of adequate regressions selection for observed processes and their use for solving practical problems of interpolation, extrapolation of factor analysis. The issues of forming the predictive models for the observed processes on the base of combining the parabolic regression, autocorrelation function and harmonical weight are considered. The paper reviews the author’s means of computer solutions of approximation, interpolation and extrapolation problems oriented toward educational process at engineering higher educational establishments and operating organizations of civil aviation.

Key words: observed process, regression analysis, double and multiple regression, linearization of nonlinear functions, least square method, forecasting of processes, confident limits of forecasting

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UDC 004.588 BBK 74.5

Chokoj V. Z.

The article presents the author’s packet of tool skins for an ECM enabling to simulate technological processes in air transport systems during aircraft maintenance. The tool skins implement mathematical models as a base for different Markov processes.

The presented tools of mathematical modeling are supposed to be useful along with the educational process for operating organizations which are interested in the issues of optimization and management of technological processes.

Key words: mathematical model, air transport system, Markov processes, Markov sequences, Markov chains, reproduction and death processes, mean-value dynamics method.

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UDC 004.588 BBK 74.5

Chokoj V. Z.

The author considers ECM tools enabling to solve the problems of optimizing the structure and operating modes of civil air transport systems. The tools are mathematically rested on the apparatus of the waiting theory. The tools functionality provides modeling the multi-channel and  separated,  opened and completed waiting systems, waiting systems without queues or with the various queuing disciplines, waiting systems with different sources and characteristics of service requests. 

The tools for multi-aspect modeling of waiting systems are supposed to find application not only in the educational process, but also in the real experience of civil air transport systems.  

Key words: air transport system, waiting theory, request flow, request servicing mode, waiting system

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UDC 004.588 BBK 74.5

Chokoj V. Z.

The article presents the mathematical approach to simulating the operation processes of complex organizational and technical systems (such as aviation enterprises) as well as the review of functional capabilities and main interface solutions on the simulating tools package. The tools enable to expand the range of problems to be solved for analysis and optimization of waiting systems typical for aviation enterprises.

The simulating tools are supposed to find application not only in the educational process, but also in the real experience of operation and research organizations of civil aviation. 

Key words: air transport system, simulating, random number generator, generation of flows with the desired distribution law, waiting system.

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