IMPROVEMENT IN THE DETECTION AND SIGNALLING OF THE APPROACH IN THE VORTEX FIELD BY A ROTORCRAFT

摘要

the present invention relates to a method and a device (10) for detecting the approach of a field in a vortex of the rotorcraft (20).after a predetermined speed threshold limit and a vertical speed limit defining a limit for the entry into an area of the vortex to the aircraft (20).a predictive speed (v (pa) and predictive vertical speed (v zp) of the aircraft (20) are calculated.the vertical velocity (v (zp) predictive is calculated differently depending on the value of the instantaneous speed (v).then, the predictive speed (v pi), and the vertical velocity (v p pa) is compared to thresholds, which may be thresholds with hysteresis.in order to determine if the aircraft near a field of the vortex and the report, where appropriate, a pilot of the aircraft (20).