This paper describes the design of the collective pitch control law of an unmanned helicopter in low-level altitude mode. The novelty is using an adaptive inner-loop control with an identifier and a reference model, which automatically provides disturbance compensation in the altitude channel during roll and yaw arbitrary maneuvering. The outer-loop control provides radio altitude hold with desired gain-frequency characteristic of stabilization error.
This paper is devoted to the problem of increasing the diagnosis confidence, diagnosis operativeness, and diagnosis depth in observable dynamical systems (DSs). The proposed solution of the above problem relies on the decomposition of DS diagnostic models, on the application of combined goodness-of-fit tests, and on the processing of observations in “forward” and “backward” time. The results of modelling are given.
This article briefly describes the design of controlled choke transformer regulator. The electrical circuit and the results of laboratory tests in the form of characteristics of idling, short circuit and performance are presented. The expediency of application of such devices in the electromechanical system of generating alternating current of constant frequency is grounded.
This article is devoted to math modeling of channel of alternating current airborne electrical power-supply system. Mathematical modeling of generator, voltage regulator, constant speed drive is considered.
The modern airport is a key element of civil aviation. Safety of flight of civil aviation depends on a number of indicators, and reliability of power supply system of the airport is one of them. Level of reliability system of power is determined by interaction of structural elements. In the article questions of quantitative indices of reliability are considered. Conditions of application of mathematical models are also considered.
The article discusses the results of the aircraft electrical equipment development trends and prospects research based on the analysis of domestic and foreign manufacturers achievements. It is shown that the determining factor in the increasing electrification of aircraft equipment is energy efficiency and ecological compatibility. Theoretical and achieved quantitative characteristics of the units, devices, and elements of the electrical systems, which must determine the layout of advanced systems of electrical equipment are presented.
In the article the questions connected with the possibility of creating environmentally friendly electric aircraft are considered. It is suggested to use modern accumulators based on the lithium-thionyl chloride as a source of electrical energy.
Algorithms coordinate value of the aircraft relative to the earth's surface by means of a digital camera or vision systems, as well as the initial alignment algorithm for the navigation system are presented.
This paper presents a method of the aircraft flight velocity vector control synthesis taking into account constraints on the thrust of the power plant, the restriction is made on the basis of the use of the power triangle, representing an equilateral triangle whose height is interpreted as the thrust of the power plant. The control laws are synthesized based on the method of inverse dynamics problems.
Discusses issues of model characteristics of the engineering and technical personnel of civil aviation for physical culture. The formation of professional and applied physical training of electricians and radio operators serving aircraft.
The article describes problems and peculiarities of aircraft Cold Weather operation in Siberia’s Northern areas, highlighting the difficulties to maintain the aircraft Avionics system functionality, providing the required level of safety and reliability at very low temperatures environment.
The domestic system of technical personnel for aircraft and their electrical systems and avionics maintenance, requires improvement and harmonization with international standards. The implementation of competency-based approach will significantly improve the quality of training and ensure compliance with international practice.
Density distribution probabilities angle orientation of polarization plate in tracking radar are considered.
The article discusses the selection of functionally important elements of aircraft avionics using the procedures of MRB and AVPO.
This article discusses identifying logic of building the aircraft maintenance system based on experience of MSG-3.
The article discusses algorithm for automatic runway detection on video sequences. The main stages of algorithm are represented. Some methods to increase reliability of recognition are described.
The problems of modeling and planning group flights of unmanned aerial vehicles are considered. For each stage of the planning procedure of group activates neural network structure is designed.
Influence of width and distortion of boring beam in environment on quality of signal reception in parametric register arrangements on different beams is considered.
Data experimental researches of sensitivity and direction properties of parametric register arrangements on optics and ultrasonic boring beams in air and water environments are considered.
The vertical separation monitoring methods have been analyzed. A new method of the aircraft vertical separation monitoring base on ADS-B is considered. Mathematical model of the method and simulation plan are presented. Experimental data are results of the method simulation and evaluates the accuracy of the proposed method. Presented method may be used under conditions of sufficient number ADS-B equipped aircrafts. Future investigations are defined.
The article is devoted to the development of the student model for use in an intelligent tutoring system (ITS) designed for the evaluation of students’ competencies in different Higher Education Facilities. There are classification and examples of the various student models, the most suitable for the evaluation of competencies is selected and finalized. The dynamic overlay fuzzy student model builded on the domain model based on the concept of didactic units is described in this work. The formulas, chart and diagrams are provided.
The problem of management of development of personnel potential airline is particularly relevant to the current stage of development of the national economy, as the creation of science-based information educational environment of the airline needed for stabilization and further development of the aviation industry.
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