초록 ▼

Apparatus for guiding an aircraft along the center line of a runway at rollout touchdown. A rollout predict path command is generated in accordance with a first path segment Y1=T1(Ym+Yu)(1-e-t/Ti)-Ymt+Yi on engaging rollout mode, which path segment transitions to a second path segment Y2=Y1e-(t-to/T

Apparatus for guiding an aircraft along the center line of a runway at rollout touchdown. A rollout predict path command is generated in accordance with a first path segment Y1=T1(Ym+Yu)(1-e-t/Ti)-Ymt+Yi on engaging rollout mode, which path segment transitions to a second path segment Y2=Y1e-(t-to/T1) at a given elapsed time to, where T1 is a predetermined time constant, Yi is an initial value of lateral displacement on rollout engagement, Yi is the time derivatives threeof, YM is a predetermined maximum lateral displacement rate, and t is the elapsed time. The predict path command signal is combined with a rate signal derived from a localizer position estimate to produce an error signal for commanding a rudder deflection to align the aircraft with the center line of the runway.

대표청구항 ▼

Apparatus for controlling an aircraft to traverse a multi-segment rollout path, comprising: control law means for providing a signal corresponding to the lateral displacement of the aircraft along the surface of a runway and relative to a path segment to be captured, means responsive to said control

Apparatus for controlling an aircraft to traverse a multi-segment rollout path, comprising: control law means for providing a signal corresponding to the lateral displacement of the aircraft along the surface of a runway and relative to a path segment to be captured, means responsive to said control law means for providing a signal corresponding to a lateral displacement rate of the aircraft relative to said path segment to be captured, means for providing a signal corresponding to the round speed of the aircraft, means for combining said lateral displacement signal, said lateral displacement rate signal, and said ground speed signal, aircraft control means for controlling the lateral displacement of the aircraft, and switching means coupled to said control law means, said displacement rate signal means and said aircraft control means, for applying a signal corresponding to a first segment to be captured to said control means for a first predetermined time duration, and for applying a signal corresponding to a second segment to be captured to said control means for a second predetermined time duration at a predetermined transition time, said first and second segments being asymptotically coincident at said first predetermined time duration, and said combined signal having a null value at said second predetermined time duration.