Vertical wind stream detection method to aid aircraft control

摘要

The method involves calculating the absolute value of the difference between the first derivatives in time of the actual incidence angle and the actual attitude angle of the aircraft. This difference is compared with an upper threshold value (Ss). The actual Mach number (M) of the aircraft is compared to a threshold Mach number (Mo). An electrical signal representing the presence of the vertical wind stream is generated when three conditions are met simultaneously. These conditions are that the error value exceeds its threshold, the actual Mach number exceeds the threshold Mach number and the aircraft control surfaces are in the level position.