Navigation.On 21 March 1919, a gyrocompass gyrocompass: see gyroscope. developed for the Navy was tested in an aircraft, marking the first recorded instance of tests of a device that would become an invaluable navigational instrument for long-range flight.
Development of the Navy's tactical air navigation Tactical Air Navigation, or TACAN, is a navigation system used by military aircraft. It provides the user with a distance and bearing from a ground station. It is a more accurate version of the VHF omnidirectional range / Distance Measuring Equipment (VOR/DME) system that system (TACAN An ultrahigh frequency electronic air navigation system, able to provide continuous bearing and slant range to a selected station. The term is derived from tactical air navigation. )--comprising a surface beacon and airborne receiver to determine the direction of the aircraft from the surface station--was initiated by a 1948 contract. On 30 August 1956 the Air Coordinating Committee approved a common military-civil short-range air navigation system called VORTAC, which combined TACAN with the Civil Aeronautic Authority's very high frequency omnirange om·ni·range
A radio network that provides aircraft with complete information on bearings. Also called omnidirectional radio range.
Noun 1. direction finder.
On 1 January 1943, just nine days after the first successful experimental demonstration of Ground Controlled Approach (GCA) technology, the system was called into emergency use for the first time when a snowstorm closed down the field at NAS (1) See network access server.
(2) (Network Attached Storage) A specialized file server that connects to the network. A NAS device contains a slimmed-down operating system and a file system and processes only I/O requests by supporting the popular Quonset Point, R.I., shortly before a flight of PBY Catalinas was due to arrive. The GCA crew located the incoming aircraft on their search radar and used the control tower as a relay station to "talk" one of them into position for a contact landing. Above, an air traffic controller at NAS Miramar, Calif., demonstrates the military application of GCA, circa 1961.