automatic landing system


Also found in: Acronyms.

automatic landing system

[¦ȯd·ə¦mad·ik ′land·iŋ ‚sis·təm]
(navigation)
The means for automatically guiding and controlling aircraft from an initial approach altitude to a point where safe contact is made with the landing surface.

automatic landing system

A system that permits aircraft to be landed automatically without any input from the pilot. In a typical system, the aircraft approaches from the outer marker to the inner marker beacon. At the inner marker beacon, the aircraft flight path is aligned with the defined glide path at a height of 100 ft above ground level and also with the runway centerline. During this phase, the autopilot controls the aircraft flight path using guidance from the ILS (instrument landing system). At this moment, the guidance signals from the ILS are disconnected and the autopilot controls the aircraft to maintain the pitch attitude and heading at the values set up during the approach. This is until the height is reached when the flare-out is initiated. The aircraft pitch attitude is controlled by the feedback of the radio altimeter. The aircraft flares out at this stage by progressively reducing the vertical velocity. If required, the aircraft's nose is straightened (if it was crabbed as a result of any crosswind on the approach path) and the aircraft lands with its nose in line with the touchdown direction. See autoland approach.
References in periodicals archive ?
The ground test of navigation aid devices of automatic landing system for aircraft on the new runway was successfully completed.
Honeywell Aerospace (NYSE: HON) has announced it has signed an agreement with German urban air taxi manufacturer Volocopter to jointly test and develop new navigation and automatic landing systems for Volocopter's vertical takeoff and landing aircraft, the company said.
Honeywell and Volocopter have signed an agreement to jointly test and develop new navigation and automatic landing systems for Volocopter's vertical takeoff and landing aircraft as the emerging era of urban air mobility moves closer to delivering a new breed of cleaner, safer and smarter air vehicles.
Salalah, Feb 23 (ONA) The ground tests of navigational aid devices of aircraft automatic landing systems on the runway of the new airport project in Salalah ended successfully today.
The US Army plans to field at least 41 brigade-level RQ-7A Shadow 200 systems, each of which include four air vehicles, two ground control stations, two ground data terminals, a portable GCS, a launcher, a Tactical Automatic Landing Systems arresting gear.
They would not be necessary in the planned space plane - which comes equipped with a crew escape and automatic landing systems.
IAI is working on automatic landing systems for UAVs, to remove what is statistically the most hazardous aspect of UAV operations -- the human element.

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