Browsing by Author "Tupitsin, N. F."

Now showing 1 - 5 of 5

APPROXIMATE CALCULATION OF THE PROCESS CHARACTERISTICS OF THE UAV LANDING ON ROPE
(«Освіта України», 2017-06) Tupitsin, N. F.; Chychkan, І. V.
Analytical expressions, which connected of the unmanned aerial vehicle parameters and characteristics of landing's rope, are obtained. In particular, the relationship between the necessary length of rope and the value of its stretching during the landing of the unmanned aerial vehicle is determined. Meanwhile, additional dampers for the rope are not considered. The mathematical model of the deceleration process of unmanned aerial vehicle during its landing on rope is based on Hooke's law and Newton's 2nd law. One of the main assumptions at the development of the mathematical model is that of the braking of the unmanned aerial vehicle after its coupling with the rope occurs with constant acceleration.
CALCULATION OF THE GAS-DYNAMIC COMPLEX SIZES
(Київ «Освіта України», 2018-03) Tupitsin, N. F.; Malakhov, S. O.; Krymov, Y. O.
In the paper exact and approximation analytical expressions for calculation of the gas-dynamic jets parameters for gas-dynamic complex are obtained. The sizes of gas-dynamic complex for providing of the unmanned aerial vehicle takeoff and landing with help of these expressions be defined. In particular, the relationship between the aerodynamic characteristics of the unmanned aerial vehicle and braking distance in artificial airstream is obtained. The mathematical model of the unmanned aerial vehicle motion in artificial airstream is based on kinematics and flight dynamics equations. Peculiarity of this model is that it is used real function of velocity distribution in a transverse cross-section of axisymmetric flooded.
EXPERIMENTAL CHECKING OF GAS-DYNAMIC METHOD OF UAV LANDING
(Київ «Освіта України», 2018-09) Tupitsin, N. F.; Massalova, H. O.
In the paper construction of the experimental gas-dynamic stand for checking of the gas-dynamic method of unmanned aerial vehicle landing is developed. Characteristics of this stand were calculated and choose. Series of experiments for given model of unmanned aerial vehicle were conducted. Experiments reveal that at braking of unmanned aerial vehicle into artificial airstream on its motion act next main factors: 1) the angle of attack; 2) uniformity, velocity, and the artificial airstream motion direction. Moreover, obtained results allow more carefully ground requirements to equipment for implement new experiments.
SAFETY ENHANCEMENT ALGORITHMS OF THE MICRO-UAV PILOTING
(Київ «Освіта України», 2018-06) Tupitsin, N. F.; Vasylenko, M. P.
The article is devoted to algorithms development of piloting with enhanced safety for micro-UAV. The critical situations arising during the flight, typical failure of the electrical equipment of the ground station communication from the unmanned aerial vehicle and the radio equipment of the unmanned aerial vehicle are taked into account. Also, the synthesis of the unmanned aerial vehicle emergency landing algorithm is held. The technical realization of the emergency landing algorithm is realized on the basis of micro-UAV PD-1900. Beside, the safety enhancement algorithm of the micro-UAV piloting is developed.
Stabilization of the Unmanned Aerial Vehicle in the Gas-Dynamic Complex
(Київ «Освіта України», 2019-06) Tupitsin, N. F.; Mykolaichuk, V. R.
The article is devoted to perfecting one of the perspective methods of take-off and landing without airfield, namely, gas-dynamic method. At first, this method accounts an application unmanned aerial vehicle with the aerodynamic controls. However, at the unmanned aerial vehicle take-off and landing with help of external gas-dynamic devices, exists a problem of its stabilization at small velocity of flight. Authors took out a patent on technical solution of the unmanned aerial vehicle stabilization at the unmanned aerial vehicle take-off and landing with help of external gas-dynamic devices, but there is not numerical proof of proposed solution efficiency. To this effect the mathematical model and calculation algorithm of automatic unmanned aerial vehicle stabilization system during take-off and landing in a gas-dynamic complex are developed. The calculations have proven that by using two gas-dynamic devices of matrix type the fundamental possibility appears of stabilizing unmanned aerial vehicle at its near-zero speeds, while the aerodynamic controls are not effective. The mathematical model of unmanned aerial vehicle motion in an artificial air flow is based on the equations of the longitudinal motion dynamics. The peculiarity of the proposed model is that during the stabilization of the angular motion of the unmanned aerial vehicle uses a partial flow around the unmanned aerial vehicle body additional artificial airflow