This air speeds of a rotorcraft in hovering flight and / or at low speeds

摘要

The present invention relates to a process and a device for determining air speeds (13), common of a rotorcraft (2) in the situation of a stationary flight and / or at low speeds. A calculation system (1) includes two pairs of the polynomial law of calculation (9,10) which can be performed successively for torque. A pair of first polynomial law (9) calculates the air speeds estimated (11) respectively longitudinal and lateral, and is constructed by multilinear regression on the basis of parameters relating to the points of the simulated flight (17) determined by means of a flight simulator (18). A pair of second polynomial relationships (10) calculates the air speeds of the rotorcraft current from the air speeds estimated (11), and is constructed by multilinear regression on the basis of parameters relating to the points of the flight of the test determined by means of test flights (25)