METHOD FOR FLIGHT CONTROL OF PILOTLESS AIRCRAFT Russian patent published in 2004 - IPC

FIELD: methods for flight control of pilotless aircraft.

SUBSTANCE: a receiver of the satellite navigation system and a radio transmitter of information on the actual parameters of flight of the pilotless aircraft are installed-on the pilotless aircraft, and a radio receiver of this information installed at the ground control station. The values of the geographical latitude, longitude and altitude above the sea level of the point of beginning of each section of the programmed trajectory are successively introduced in the computer storage of the ground control station, the required values of F_rv,Θ of the orientation angle of velocity vector of the pilotless aircraft are computed and memorized for each section of the flight trajectory. The actual values of the geographical latitude (GLat_a), geographical longitude (GLong_a), altitude above the sea level (H_a) of point Л of the actual location of the pilotless aircraft are determined in flight of the pilotless aircraft with the aid of the receiver of the satellite navigation system, as well as projections Vx, Vy, Vz of velocity vector on the axes of the respective co-ordinate system. GLat_a, GLong_a, H_a, V_x, V_y, V_z are transmitted to the ground control station with the aid of the information radio transmitter, where they are received with the aid of the information radio receiver and supplied to the computer, where the deviations of L_G and L_C of the actual trajectory of the pilotless aircraft from the programmed trajectory, actual values of F_a,Θ_a of the orientation angles of vector differences dF of angles F_rv and F_a and differences dΘ of angles Θ_rv and Θ_a are computed, control commands depending on L_G, L_C, dF and dΘ are formed, the control commands are transmitted to the pilotless aircraft, where they are received, and the control surfaces of the pilotless aircraft are deflected in accordance with the control command.

EFFECT: reduced mass of the devices used for determination of the deviation of the actual trajectory of the pilotless aircraft from the programmed trajectory.

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