Категория: 2.9. Transport systems

Environmentally-friendly method of cleaning the volatile organic emissions at maintenance of aviation equipment

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UDC 66.074.5(75.8) BBK 35.11.73

Mitin A. K., Nikolaykina N. E.

The research results of an original-design polymeric nozzle for cleaning the emissions of volatile organic compounds are presented. The device is recommended for vapor recovery of paint coat solvents at maintenance and repair. Cleaning efficiency is up to 99%. Results of hydrodynamic research are described, recommendations about a choice of biofilters operating mode and about their use in civil aviation are made. 

Keywords: biofilters; volatile organic compounds; emissions cleaning, environmental protection; aviation equipment service.

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Methods of reducing the impact of the working environment during the aircraft maintenance

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UDC 656.7; 629.7 BBK 39.5

Khudyakov Y. G., Nikolaykin N. I.

The article considers the issues of decision support by the example of organization of technical service (for example, aviation enterprises). The purpose of these solutions is reducing the negative impact factors of the working environment. The authors propose algorithm and methods of actions of the managerial system at the enterprises to reduce occupational traumatism andoccupational morbidity. As a result the level of safety in the industry increases.

Keywords: air transport; technical service; aerotechnics; working environment; danger; occupational traumatism;occupational morbidity.

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To the question of aviation stuff training in the area of the human factor

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UDC 331.45 BBK 74.204.9

Barsukov A. G.

The article deals with the meaning of sole understanding of the problem − definition of the human factor and aviation stuff training in this area. It gives a definition of the human factor and a modern approach to study its aspects used SHEL model and Ishikawa’s cause and effect chart.

Keywords: flight safety; aviation stuff; aviation system; aircraft; aviation accident; personal factor; human factor; SHEL model; Ishikawa’s chart.

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Research of the characteristics of the satellite navigation system precision fields by HIL-simulating and mathematical modeling

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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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MathCad software development for research of controlled longitudinal motion of an aircraft on landing

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UDC 692.7.05.001 BBK 39.571.552

Dil’ V. F., Kozlov A. A.

The article describes the main aircraft control techniques and presents a technology and an algorithm of exploring the controlled longitudinal dynamics on aircraft landing in the MathCad environment. The research is carried out under the action of different control laws of the automatic control system on approach by means of computational modeling of the aircraft controlled longitudinal dynamics.

Key words: landing system, automatic control system, director control system, MathCad, mathematical model, aircraft, the phase of landing, modeling.

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Computer aids of descriptive statistics as initial analysis and selection of predictive distributions for observed processes

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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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Structural estimation of compressor and turbine rotor blades of aircraft gas-turbine engines

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UDC 004.588 BBK 74.5

Karavaev Ju. A., Hodackij S. A.

В статье приведена методика прочностного расчёта рабочих лопаток компрессоров и турбин авиационных ГТД с использованием программы FEMAP.

Рассмотрены допущения, принимаемые при расчёте. Последовательно рассмотрены этапы расчёта. Приведено изменение напряжений по перу лопатки.

Ключевые слова: статическая прочность, напряжения, расчёт.

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Cargo securing on the military trucks – transportation experiment

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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.

Tools for regression analysis and forecasting of processes in air-technical systems

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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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Evaluation of effect of size of wear particles (accumulated on filter element) on the intensity of their x-ray fluorescence when diagnosing the oil system of aviation GTE

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UDC 621.452.3:53.082.56 BBK 39.55:22.345/.346

Stepuk T. D., Pavlinsky G. V.

The article gives the assessment of the aviation engine technical status based on intensity of the flush x-ray fluorescence from its filter element. The evaluation rests on dependence of x-ray fluorescence analytical signal on the size of metal particles in the flush. The number of the large particles characterizes the level of wear of the engine.

Key words: x-ray fluorescence; aviation engine technical status; flush from filter element; impact of the size of particles on intensity; wear processes.

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