MODE OF DEFINITION OF THE BAROMETRIC ALTITUDE AND THE VERTICAL SPEED OF A FLYING VEHICLE Russian patent published in 2005 - IPC

FIELD: the invention refers to aviation technique.

SUBSTANCE: the mode envisages measuring of vertical acceleration and with the help of a sensor of static pressure- the indicated barometric altitude. The values of the vertical speed are received by way of integrating a vertical acceleration, the values of the barometric altitude - integrating a vertical speed with the calculation of corrections of acceleration and speed. The difference between computed and indicated barometric altitudes with calculation of delays in the pneumatic tract of static pressure is used for computing mentioned corrections using coefficients. The atmosphere is sounded no more than 3 hours before flight tests which are carried out on regimes consisted of sectors of horizontal flight, climbing and lowering. At that vertical acceleration, indicated barometric altitude, reference vertical speed and geometric altitude of a flying vehicle are synchronously measured. Using these parameters the model values of vertical speed and barometric altitude are computed on the basis of Kalman's filters and coefficients are optimized minimizing the criterion of quality: the mean value of the square of an error or the maximum value of the module of an error of defined magnitude. The delay in the pneumatic tract is defined by calculation of pressure and temperature of air at the present altitude.

EFFECT: increases accuracy of definition of vertical speed and barometric altitude of the flight.

6 cl, 3 dwg, 1 tbl