METHOD FOR DETERMINATION OF ATTACK AND SLIP ANGLES OF UNMANNED AERIAL VEHICLE Russian patent published in 2023 - IPC G01P21/00 G01S19/00 

FIELD: military aviation.

SUBSTANCE: invention relates to a technology of determination of movement parameters and to the field of assessment and measurement of an angular position of an aircraft; it can be used for restoration of attack and slip angles of an aircraft in their absence. According to the method, a flight-path speed is used, measured by means of a navigation satellite system, as well as values of angles of aircraft spatial orientation from the navigation system. A value of an air speed is determined, and three projections of a wind speed are identified. Assessments of attack and slip angles are determined, obtained based on aerodynamic coefficients of lifting and side forces, engine thrust, as well as based on overloads measured with onboard sensors in a body axis coordinate system. Thus, two types of assessment of attack and slip angles are obtained based on values of aerodynamic coefficients, dependent on wind, and based on measurements of the navigation system, in which air movement is not taken into account. An object model, a measurement model, and a vector of assessed parameters are determined. Attack and slip angles are restored by parametric identification.

EFFECT: possibility of restoration of values of attack and slip angles in the absence of measuring instruments designed for it.

1 cl, 2 dwg