Категория: 2.9. Transport systems

Features of the modern stage of airport air service development

UDC 656.7 BBK 39.51

Shutova T. A.

The article describes the current state of the airport air service industry in Russia. The author defines the stages of the development of the airport air service market on the basis of the retrospective analysis. The article considers the main legal forms of investment attraction to the airport infrastructure public-private partnership, concession, contract lifecycle. The author shows the features of the competition among airports for the status of the hub, and among the Russian airport holdings at the modern stage of the airport business development.

Keywords: airport air service market, airport holdings, airport business, air transport hubs, networking air carriers.

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Concerning the methods of reloading breakbulk cargo on railway warehouses

UDC 656.073 BBK 39.28

Urmanova Z. A.

The freight flow of breakbulk cargo processed at railway warehouses is analyzed. On the basis of the analysis, a simplified mathematical model is justified, in which the entire diverse range of goods is split into the following three groups of reloaded breakbulk cargo – through the main storage areas, sorting and temporary storage areas, and directly from one mode of transport to another.

Key words: warehouse; storage area; breakbulk cargo; reloading.

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Promising fasteners for aircraft structures of carbon composites

UDC 629.7.015.4.023 BBK 39.48

Sazhin N. A.Sazhin A. N.

The authors consider benefits and drawbacks of existing (traditional) fasteners (metal rivets) for airframes built with application of carbon composites.  Schematic designs of promising patented fasteners (PCM rivets) and patented technologies of their mounting in aircraft structures, experimental full-size designs of the fasteners of polymeric composite materials (carbon composites) providing improvement of their mounting are given. 

Key words: fasteners, mounting, rivet, carbon composite, polymeric composite material, blind riveting, aircraft structures.

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Signal demodulation for the secondary radar channel of ADS–B system

UDC 621.396.74 BBK 39.571.5

Lezhankin B. V., Mezhetov M. A., Turincev S. V.

Aircraft flight safety is largely dependent on the performance of systems having various purposes. One of the systems is ADS-B intended for air traffic management by constructing trajectories of aircraft motion with efficient use of airspace. The analysis of main methods of designing the equipment, demodulating and decoding the signals in data links is therefore a relevant objective which can increase the efficiency of air transportation at the required level of flight safety.   

Key words: ADS-B, systems of symbol synchronization, quadrature demodulator, quadrature signal, hardware-software receiver, preamble detector.

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Use of Pareto chart for developing recommendations on aircraft reliability

UDC 629.3.083 BBK 39.0163

Barsukov A. G.

The author considers a methodology of integrated approach to the rationale and implementation of recommendations on aircraft reliability with the use of Pareto chart.

Key words: flight safety; aircraft; reliability; failure; fault; Pareto chart.

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Economic expediency of using an air company’s aircraft fleet for a specified net-work of airlines

UDC 656.7.025, 656.032 BBK 65.37, 39.58

Mineeva K. I.Nemchinov O. A.

Проанализирована интенсивность использования воздушных судов авиакомпании на маршрутной сети. Произведена оценка экономической эффективности эксплуатационной деятельности авиапредприятия через расчёт прямых переменных затрат и эксплуатационного дохода по 22 авиалиниям. Выполнено прогнозирование дохода авиакомпании при изменении тарифов в зависимости от сегментации пассажиров. Построена зависимость дохода авиакомпании от характера изменения тарифов.

Ключевые слова: авиакомпания, хаб, эффективность эксплуатации, тариф, маржинальная прибыль.

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Kinetics of creep fracture of vt-20 titanium planar samples

UDC 629.7.015.4 BBK 39.52

Zabobin V. V.

The article demonstrates the results of experimental research of fracture kinetics for samples made of VT-20 titanium sheets under alternate stresses and at elevated temperatures. Dependences of crack growth rate on load parameters are obtained. The mechanism of regarding the influence of temperature and load non-stationarity on VT-20 fracture kinetics is proposed.

Keywords: kinetics, creep, crack, supersonic transport airplane, SST, titanium alloy.

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On the influence of average technical speed on production cost in the complex of micro auto transport systems of cargo transportation

UDC 656.13 BBK 39.38

Aytbagina A. R.Vitvitskiy E. E.

Task solution has been performed by modeling the object – a substitute of complex of micro auto transport systems. The article considers operational transportations planning by an enterprise – producer when it transports its own construction cargo, for its own account, using its own motor vehicles for its construction sites. The authors obtained functional dependence between the production cost and average technical speed of a vehicle in the accepted variability interval and form of this connection for different production situations. Regression models of production cost obtained by the authors have been checked on adequacy to transportation process under study in the complex of micro auto transport systems of cargo transportation using MS Excel.

Keywords: complex of micro auto transport systems of cargo transportation; average technical speed; a motor vehicle; a consignor; production costs; regression dependence.

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Stochastic discrete mathematical model of aerometric instrumentation control by data of flight recorders

UDC 629.7 BBK 39.56

Shomankov D. A.

The presented mathematical model is based on complexation and evaluation of heterogeneous flight parameters which are registered by data recorders or other concentrators that provide their post-flight processing by linear discrete Kalman filtering algorithms. The presented materials are based on previously obtained scientific results and are a continuation of the paper published in IIAJ «Crede Experto: transport, society, education, language» (2017, № 2, p. 115–125).

Key words: complexation, error estimation, control, controlled state, diagnostic sign, seminatural experiment.

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Specificity of fastening of cargo in emergency supply

UDC 629.118 BBK 39

Martin VlkovskýKamil Bednář

The article deals with the special features of fastening of cargo in crisis situations during the emergency supply. The emphasis is placed on crisis situations where limited transport infrastructure is available for emergency supply purposes. Under these conditions, problems with transport of emergency supplies to and within the crisis situation area can be assumed. Based on the statistical evaluation of the transport experiment carried out on the road (motorway) and on unpaved communications (terrain) respectively recommendations are made in relation to the fastening of cargo.

Keywords: fastening of cargo; inertial forces; acceleration coefficients; emergency supply; transport experiment.

SPECIFIKA UPEVŇOVÁNÍ NÁKLADU V RÁMCI NOUZOVÉHO ZÁSOBOVÁNÍ

Článek řeší zvláštnosti upevnění nákladu v krizových situacích během procesu nouzového zásobování. Důraz je položen na krizové situace, kdy je pro účely nouzového zásobování k dispozici omezená dopravní infrastruktura. V uvedených podmínkách lze předpokládat problémy v přepravě nouzových zásob do prostoru krizové situace a v rámci ní. Na základě statistického vyhodnocení přepravního experimentu, který byl proveden na silnici (dálnici), resp. na nezpevněné komunikaci (terénu), jsou předloženy doporučení ve vztahu k upevnění nákladu.

Klíčová slova: upevnění nákladu; setrvačné síly; koeficienty zrychlení; nouzové zásobování; přepravní experiment.

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