Question

What is missing in the localizer coupling loop?

(a) Flight computer

(b) ILS Localizer receiver

(c) ILS glide path receiver

(d) ILS Localizer transmitter

This question was posed to me in my homework.

My question comes from ILS/MLS Coupled Landing System and Automatic Landing topic in section Autopilots and Flight Management Systems of Avionics

Answer 1

The correct option is (b) ILS Localizer receiver

To explain I would say: The Localizer coupling loop is integrated with the heading command loop to manage the heading of the aircraft. It is a closed loop system which continuously corrects with respect to the ILS Localizer. The error in flight path is corrected with respect to the localizer beam by means of a localizer receiver in the aircraft.