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CONTENTS #6 (June) 2020

 

СThe Automatic Landing System of an Unmanned Aerial Vehicle in the Conditions of Informational Countermeasures (p. 3 – 11)

M.A. Pogosyan, A.A. Vereikin

An automatic landing system of an unmanned aerial vehicle workable in the conditions of informational countermeasures has been developed. The developed system doesn’t depend on external conditions, requires neither additional hardware resources nor special equipment of aerodromes with instrumental landing systems.

Keywords: automatic landing system; unmanned aerial vehicle; informational countermeasures; control resources degradation; modified Luenberger observer.

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Properties Мodeling of Polymer Composite Materials Used in Aircraft Constructions (p. 12 – 16)

A.V. Markov, N.Yu. Efremov, O.A. Oreshina

The basic properties modeling of radio-absorbing disperse filled polymer composite materials is considered. Research methods include the theory of simplex grid planning of an experiment with constraints. The results of the research are mathematical models that allow describing the properties of the materials being created with the necessary accuracy (Shore hardness, tensile strength, and tensile elongation). The mathematical model is reduced to the calculated level and can be used to solve optimization problems when obtaining a new material composition.

Keywords: modeling; mathematical model; polymer composite materials; simplex grid planning.

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Promising Ergonomic Technologies for Aircraft Development and the Role of Man in the Aviation System (p. 17 – 23)

A.V. Chuntul, V.A. Ryabinin

The work presents psychophysiological and engineering-ergonomic approaches to solving the problem of including flight crews in modern and promising flight automation systems. Technologies are proposed for equipping aircraft to reduce crew load, increasing operational efficiency and flight safety. A forecast of changes in the structure of the causes of accidents is given, taking into account the development and implementation of automatic piloting systems.

Keywords: information field; mental image; flight safety; automation systems; ergonomic characteristics; bioelectronic cabin; electronic indication; controls; human factor.

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Design of Nonlinear Controller of Quadcopter Flight Control System in Vertical Axis (p. 24 – 31)

V.V. Sheval

Possibility of two-channel automatic tracking system dynamic accuracy increasing is considered. Imprecise channel of the structure is quadcoptcr flight control system, precise channel of the structure is tracking system of onboard optical device. Nonlinear flight control algorithms of quadcopter providing error tracking decreasing are investigated.

Keywords: aviation mobile robot; quadcopter; nonlinear control; two-zone feedback systems.

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Improving the Mechanism for Modernizing the Production Base in the Aviation Industry (p. 32 – 41)

N.M. Abdikeev, Yu.S. Bogachev, P.V. Trifonov

ПThe development of methods for organizing programs aimed at modernizing the production base of the aviation industry is devoted. According to the analysis of efficiency of realization of state programs substantiated proposals to improve the mechanism for its implementation on the basis for the formation of cluster structures taking into account competences of manufacturing companies, the hierarchical structure of production chains. A mechanism for technological development of the aviation industry and the organization of support for sustainable demand for aviation industry products in the domestic market has been developed.

Keywords: technological breakthrough; high-tech industry; aviation industry; modernization of the production base; competitive products; network production structures.

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Stall Flutter of Tail and Main Rotor Blades Study (p. 42 – 55)

M.G. Rozhdestvenskiy

Some results of the study of the stall flutter of the tail and main rotor blades are presented. An algorithm has been developed and a program for calculating the loads on the blades during a stall flutter has been created. The study of the mechanism of self-oscillations development for a blade that performs torsional and flexural-torsional oscillations was performed. The results of calculations of loads during the flutter condition on the example of the tail rotor blade of the Mi-26 helicopter, performed in order to identify factors that affect the value of the hinge moments, and determine ways to reduce them are presented. The conditions and features of self-oscillation of the type of stall flutter occurrence on the main rotor blades are considered too. Ways to reduce this phenomenon are given.

Keywords: stall flutter; unsteady aerodynamics; dynamic stall; self-oscillation; tail rotor; hinge moments; main rotor blades.

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Centralized Aircraft Fuel Filler System at CSTO Airfields (p. 56 – 60)

S.V. Stulov, I.R. Gabdrashitov

The existing methods of aircraft refuelling are analyzed. The refuelling systems are described. A centralized fuel filler system system is shown to be the most effective way of aircraft refueling. This system is proposed to be primarily delivered to the CSTO airfields in order to rapid response to suddenly emerging problems in various regions of collective security.

Keywords: collective aviation forces; centralized refueling system; aircraft; airfields; rapid response.

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