Method of determination of the wind speed means with respect to the ground during the flight of a 371

摘要

Is measured at each instant of rank i of a series of n points distributed over a period of flight, the module v 1 of the speed of the aircraft with respect to the air, and the three components sn, i, i and sv i of the speed of the aircraft with respect to the ground. It is then solved by the least squares method, the system of n (n - 1) / 2 equations in three unknowns wn, we and wv: / p & & p & 2 (sn, i - sn + 2 (j) wn is i - to j) we + 2 (sv i - sv j) wv = s * * 2n i - s * * 2n j + s * * 2e i - s * * 2e j + s * * 2v i - s * * 2v j + v * * 2j - v * * 2i / p & & p & in which wn, we and wv are the three components of the wind speed, during the period of flight. in response to the components thus determined, it controls the members of the aircraft which are sensitive to the wind, for example, the elements of firing.