AIRCRAFT STALL WARNING INDICATOR SYSTEM BASED ON RATE OF CHANGE OF ANGLE OF ATTACK

摘要

A signal corresponding to the rate of change of the angle of attack of an aircraft is derived and is operatively summed with a signal corresponding to the actual angle of attack. The resulting signal is compared to a reference level and a stall warning signal, indicating a predetermined time remaining until stall is produced when the former signal bears a predetermined relation to the latter.