How is the descent profile provided by the glideslope in the ILS?

The descent profile provided by the glideslope in the Instrument Landing System (ILS) is defined by a specific glidepath. This glidepath represents the optimal angle for the aircraft to descend to the runway, ensuring that it approaches at a safe and consistent rate. The glidepath is typically established at a standard of 3 degrees, allowing pilots to align their descent accurately with the runway, facilitating a safe landing.

The glidepath is a critical component of the ILS, as it assists pilots in maintaining the correct vertical navigation throughout the approach phase. Rather than presenting options in linear segments, adjustable angles, or time intervals, the glideslope specifically delivers information on the desired flight path angle to the runway, reinforcing the importance of a defined and reliable descent trajectory in instrument approaches.