| 摘要 |
A signal Vv representing vertical wind component according to Vv = [)theta-alpha)h Vair]g, where theta is aircraft pitch angle, alpha is aircraft angle of attack, h is altitude rate and V air is airspeed is produced. The signal is produced by a pitch altitude gyro (210), filter (206),altitude rate meter (222) and filter (220), air data airspeed meter (214), divider (224), summing circuit (226), angle of attack vane (232) and filter (230). A further summing junction (240) sums the vertical widn component signal and a conventionally-derived longitudinal wind component signal to produce a total wind shear signal, Vws which is input to two-level warning logic (256).
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