Категория: Aeronautics

The mathematical model of aerometric devices errors on the basis of different information integration according to flight recorders

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UDC 629.7 BBK 39.56

Shomankov D. A. 

The mathematical model presented in the article is based on the integration of different flight information recorded by the means of objective control and can be used in the systems of optimized evaluation of high-speed flight parameters or technical control of aerometric measuring devices.

Keywords: integration, correlation function, generating filter, errors, optimized evaluation, control, technical condition

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Development of mathematical model of input action for the device support of the radiation source according to the movable radio finder

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UDC 621.396.96 BBK 32.842

Hmarskij P. A., Sushhinskij A. A.

The authors present the methodology of development of input action mathematical model  for the device support of the radiation source according to the movable radio finder.

Key words:  movable radio finder; accompanied only by angular coordinates; model of input action; model of specifying impact; random discrete maneuver; the Kalman filter.

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Extraction of run-up signals in systems of information communication in VDL-2 mode

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UDC 621.396.74 BBK 39.571.5

Mezhetov M. A., Turincev S. V.

Air-to-air and air-to-ground automated data exchange systems are increasingly common. Automated data exchange (ADE) in such systems is conducted in VHF band with the use of VDL-2 или VDL-4 modes. The design of ADE receivers implies a clock sync (CS) circuit in their composition which can be constructed differently. A run-up signal in such systems is extracted digitally.  One of the factors influencing the quality if received information in VDL-2 systems is selection of a technique of run-up signal regeneration.  

The article considers a technique of run-up signal regeneration with use of front reconstruction which is implemented in a hardware-software receiver developed by the authors. Research of CS regeneration principles will enable to conduct a comparative analysis of different techniques of extracting and forming a run-up signal and to apply the hardware-software receiver for further research.

Key words: VDL-2, clock sync systems, Gardner detector, scrambler, quadrature components, hardware-software receiver.

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Stages of formation and development of aeronautical radionavigation scientific school of MSTU CA, Irkutsk branch

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UDC 621.391:621.396 BBK 39.57-5

Lezhankin B. V.

The article analyzes the stages of formation and development of aeronautical radio-navigation scientific school of MSTU CA, Irkutsk Branch. The main scientific approaches are described. The article reviews the main scientific staff publications.  It demonstrates the research intergenerational continuity, development of the methodology and scientific and experimental facilities.

Keywords: scientific school, radionavigation, interaircraft navigation, satellite navigation.

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Precision of the secondary processing algorithm of navigation signals of the global navigation satellite system based on rho-rho navigation-doppler extended Kalman filter

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UDC 621.396.98 BBK 39.57-5

Kiryushkin V. V., Suprunov A. V.

The authors conduct a research of the error dynamics of the algorithm of the secondary processing of navigation signals of the global navigation satellite system based on extended Kalman filter. The article shows that at the stages of intense maneuvering the accuracy of a certain positioning of a highly dynamic consumer increases to 1.5 times. Presumably the reason for this is the mismatch of the dynamic model of the object, embedded in the optimal linear filter and real dynamics of users’ movements.

Key words: global navigation satellite system, highly fluid consumer, extended Kalman filter, measurement error of coordinates.

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Concerning a new possibility of increasing the positioning accuracy in single-frequency equipment of satellite radio navigation systems

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UDC 004:[316.3:008] BBK 74.58:73

Gorbachev O. A., Zatolokin D. A., Ivanov V. B., Kholmogorov A. A.

The problem of increasing the positioning accuracy of global navigation satellite systems is one of the most important problems of navigation. One of the most inexpensive ways to solve the problem is the time-differential mode of GNSS proposed by the authors earlier. The article focuses on modernization of the time-differential mode for satellite radio navigation systems (SRNS) operating in a single-frequency mode.

Keywords: navigation problem; single-frequency receiver; antenna phase center; differential mode; control and correction station; pseudorange.

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Means of mathematic programming for optimization of air transport systems

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UDC 004.588 BBK 74.5

Chokoj V. Z.

Mathematic and algorithmic approaches to solving practical problems with the use of the mathematic programming toolkit are reviewed. The author considers issues of functionality, directions for use and peculiarities of applying a package of the author’s tools to solve optimization problems associated with air transport systems operation. The main interface solutions on the tools are considered.

The package is recommended for use in engineering and technical higher educational establishments as well as in civil aviation organizations for which the issues of optimization of organizational and technical systems and their processes are urgent.

Key words: air transport system, mathematic programming, performance function, functional, limitation system, plan optimization, simplex method, automatic classification

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The opto-electronic complex of non-destructive testing of aircraft components

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UDC 535.8 BBK 22.34

Pavlov P. V., Wolf I. E., Malov A. N.

The authors discuss ways to implement the devices of non-destructive testing of aircraft components, whose operation is based on the method of optical radiation speckle patterns. The article presents the results of field tests for the practical application of optoelectronic complex of non-destructive testing to assess the technical condition of the aircraft cockpit glazing.

Key words: non-destructive testing; optoelectronic systems; correlation; speckle; laser.

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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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