Категория: Issues, prospects of development and application of unmanned aircraft systems

The defense model of the optronic equipment of tactical unmanned air vehicles against enemy laser technologies

UDK 623.624.2 BBK 32.95

Glushkov A. N.

Marchenko A. V.

The article presents a developed model of a conflict interaction between optronic equipment and functional-kill laser complexes. The model is based on the representation of the conflict as a semi-Markovian stochastic process with a discrete set of states and mathematical formalization of dependence of probabilities of being the “optronic equipment –functional-kill laser complex” system in their ground states on probability and time characteristics of the conflict parties.   The obtained analytical expressions allow the influence of conflicting parties parameters on the conflict winning probability to be defined.

Key words: optronic equipment, laser reconnaissance aid, conflict interaction, state probability, target drop-out, functional-kill laser complex.

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Mathematical modeling of wind disturbances acting on the vertical channel of an unmanned aerial vehicle

UDK 629.735-519 BBK 39.52C21

San’ko A. A.

Rozhkov I. V.

Smol’skiy D. A.

The paper presents the mathematical dependences of the wind component in the vertical channel on the flight parameters of an unmanned aerial vehicle   (UAV), wind strength and features of its modeling. Significant factors of modeling conditions influence on the wind component acting on the UAV in the vertical channel are found.

Keywords: wind, unmanned aerial vehicle, factor experiment, mathematical dependences.

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Wind influence on the angular stabilization system of the unmanned aerial vehicle

UDK 629.735-519 BBK 39.52С21

A.A. Sanko

L.V. Rozhkov

A.A. Sheinikov

The paper presents a mathematical model of the wind, taking into account it’s gusting part and the steady-state wind acting on a short-range unmanned aerial vehicle (UAV) in a related coordinate system in an operator form. A comparative analysis of the effect of wind parameters on the total wind velocity vector acting on the UAV has been carried out. The flight pitch autopilot reaction to the wind is considered. The necessity of taking into account the wind speed in the synthesis of autopilot pitch angle for short-range UAVs in landing mode is proved.

Keywords: wind, unmanned aerial vehicle, wind mathematical model, transmission coefficient, transition process.

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