Mathematical Modeling of Aerohydrodynamicof Amphibious Air-Cushion Vehiclewith Aerodynamic Unloading on Cushion Regime

Kalyasov, Pavel; Fevralskikh, Andrey; Shabarov, V. V.

doi:10.32326/1814-9146-2014-76-3-263-268

PSP

2014

DOI: 10.32326/1814-9146-2014-76-3-263-268

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Mathematical Modeling of Aerohydrodynamicof Amphibious Air-Cushion Vehiclewith Aerodynamic Unloading on Cushion Regime

Pavel Kalyasov¹,

Andrey Fevralskikh²,

V. V. Shabarov³

Abstract: Ðàçðàáîòàíà ìåòîäèêà ðàñ÷åòà àýðîãèäðîäèíàìè÷åñêîãî ñîïðîòèâëåíèÿ àìôèáèéíîãî ñóäíà íà âîçäóøíîé ïîäóøêå ñ àýðîäèíàìè÷åñêîé ðàçãðóçêîé íà ðåaeèìå õîäà íà âîçäóøíîé ïîäóøêå. Ìåòîäèêà áàçèðóåòñÿ íà ñóïåðêîìïüþòåðíûõ òåõíîëîãèÿõ âû÷èñëèòåëüíîãî ýêñïåðèìåíòà, ïîçâîëÿþùåãî ìîäåëèðîâàòü òóðáóëåíòíûå òå÷åíèÿ ñ ãðàíèöàìè ðàçäåëà ñðåä. Ðåçóëüòàòû ðàñ÷åòîâ âåðèôèöèðîâàíû ïî ðåçóëüòàòàì áóêñèðîâî÷íûõ èñïûòàíèé â ñêîðîñòíîì îïûòîâîì áàññåéíå ÔÃÓÏ «Êðûëîâñêèé ãîñóäàðñòâåííûé íàó÷íûé öåíòð».

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2021

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Numerical simulation of splashing landing gear on an amphibious aircraft air cushion

Fevralskikh

2021

IOP Conf. Ser.: Mater. Sci. Eng.

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The paper presents the basics of the methodology for modeling the spatter formation of landing gear on an amphibious aircraft hovercraft based on the numerical solution of the Navier-Stokes equations for a two-phase incompressible flow with a free interface (VoF approach) and the disperse medium motion equations (DPM approach). The results of numerical simulation of the water jet collapse in the transverse air flow in comparison with the experimental results are given, as well as recommendations and results of application of numerical simulation in forecasting the air cushion splash formation. The results of the simulation are in good correspondence with the results of the experiments published earlier, which demonstrates the prospects of applying the technique in the development and design of new landing gear layout solutions on an amphibious air cushion aircraft.

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Numerical simulation of splashing landing gear on an amphibious aircraft air cushion

Fevralskikh

2021

IOP Conf. Ser.: Mater. Sci. Eng.

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Development of a control system for the hydraulic system parameters of a vehicle with a combined chassis on an air cushion

Brusov¹,

Мерзликин²,

Меньшиков³

2021

Trudy NAMI

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Introduction (problem statement and relevance). The development problems of sparsely populated and hard-to-reach regions of the Russian Federation, including the Arctic zone, are associated with the development of transport links. The use of vehicles with a combined chassis on an air cushion, which makes it possible to dramatically increase their cross-country ability, is justifi ed for such regions.Purpose of the study. Manual operating the hovercraft landing gear is diffi cult. To create an automatic control system, it was proposed to use an electronically controlled hydraulic system. The aim of the study was to develop a control system for the hydraulic system characteristics and provide the vehicle optimal control.Methodology and research methods. The hydraulic performance management strategy was to simultaneously explore and control the vehicle and was of a two-level structure. The fi rst level included a algorithm which set up the controller parameters for the known supporting surface properties. The second level included an adaptive algorithm to adjust the parameters of the hydraulic system to consider the unknown properties of the supporting surface of the moving vehicle.Scientifi c novelty and results. The developed hydraulic system for the drive of the air cushion fans and the drive of the caterpillar propeller allowed to increase the height of overcoming irregularities while maintaining the values of vertical g-forces of the vehicle, and also to reduce power consumption by 10–20% when overcoming a typical range of irregularities.Practical signifi cance. The results obtained have created a theoretical and practical foundation for a new generation of special-purpose vehicles, in particular, equipped with an air cushion chassis, which will allow the formation of an effective dynamics with the insuffi ciently defi ned number of environment impact parameters.

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Mathematical Modeling of Aerohydrodynamicof Amphibious Air-Cushion Vehiclewith Aerodynamic Unloading on Cushion Regime

Cited by 2 publications

References 1 publication

Numerical simulation of splashing landing gear on an amphibious aircraft air cushion

Numerical simulation of splashing landing gear on an amphibious aircraft air cushion

Development of a control system for the hydraulic system parameters of a vehicle with a combined chassis on an air cushion

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