초록 ▼

An improved windshear warning apparatus for aircraft, responsive to both the magnitude of the wind shear and the allowable time the windshear can be tolerated at a given magnitude. The sensed magnitude is used to compute the allowable time before providing a windshear alarm. For large windshear rate

An improved windshear warning apparatus for aircraft, responsive to both the magnitude of the wind shear and the allowable time the windshear can be tolerated at a given magnitude. The sensed magnitude is used to compute the allowable time before providing a windshear alarm. For large windshear rates, the allowable time is short; conversely for small windshear rates which exceed a threshold level, a longer time period is computed before an alarm occurs. Since a windshear rate must persist for the computed allowable time before activating the alarm, windshear rates that are above the threshold level for elapsed time less than the computed allowable time will not result in an enunciation, while high magnitude windshear rates of short duration will not cause false alarms since they do not exceed the computed allowable time.

대표청구항 ▼

Apparatus for generating a windshear warning control signal, of the type having detector means for sensing the difference of aircraft inertial acceleration with respect to a supporting airmass, and providing vertical or longitudinal components thereof, comprising: means responsive to said difference

Apparatus for generating a windshear warning control signal, of the type having detector means for sensing the difference of aircraft inertial acceleration with respect to a supporting airmass, and providing vertical or longitudinal components thereof, comprising: means responsive to said difference of inertial acceleration for providing a windshear rate signal representative of a magnitude of windshear rate exceeding a predetermined limit corresponding to a threshold of detection, means responsive to said windshear rate signal exceeding said predetermined limit for providing a first timing signal representative of a time duration of said rate signal, means responsive to said windshear rate signal for generating a second timing signal representative of a maximum allowable duration that safe flight can be sustained at said windshear rate, and means for combining said first timing signal and said second timing signal to obtain an algebraic difference thereof and generate said control signal when said first timing signal exceeds said second timing signal, so that said warning signal is generated after a time delay inversely as the magnitude of said windshear rate signal.