Consider the case of a navy pilot landing an aircraft on an carrier. The pilot has three basic tasks, the first of which is to t.he aircraft's approach to the ship along the extended centerline of !.he nLnway. The second task is maintaining tht: aircraft on the correct glideslope, the third task is that of maintaining the coTrect spec:d. A model of lateral position control system is shown in the following

-------- ------------1 r------------- 1 1 I 1 1 Pilot : Aircraft ;

I I I I I Ailerions and I I Controller I aircraft I I I I K(s+O.S) I 1 I Y(s) I I :E I s I (s-l)(s 2+ 10s+41 I Later

: R(s) +®-- : Center a! : line - on I I I I I

I I

I I

_____________ _.

Lateral Position Control System Determine the range of stability forK 2': 0.

positi Problem