Definition

1. Noun:
   • A navigational aid system: An omnidirectional range is a ground-based radio navigation system that provides aircraft with continuous, 360-degree azimuth (bearing) information relative to the station's location.
   • A component of a network: It typically refers to a specific station or beacon within the VHF Omnidirectional Range (VOR) network, which transmits signals that aircraft equipment interprets to determine the craft's radial (magnetic bearing) from the station.

Usage Examples

• Noun:
  • The pilot tuned the navigation radio to the frequency of the next omnidirectional range.
  • Before modern GPS, cross-country flights relied heavily on a chain of omnidirectional ranges for navigation.

Advanced Usage

• "VOR" (VHF Omnidirectional Range): This is the full and most common technical term for the system. While "omnidirectional range" is the core concept, "VOR" is the standard implementation.
  • The aviation chart showed a VOR located near the mountain pass.
• "To home in on an omnidirectional range": To navigate directly toward the station by following a specific radial.
  • The aircraft homed in on the omnidirectional range to establish its initial approach position.

Variants and Related Words

• VOR (Noun): The standard abbreviation for VHF Omnidirectional Range, referring to the complete system or a specific station.
  • The VOR indicator in the cockpit showed the aircraft was on the 180-degree radial.
• VORTAC (Noun): A combined facility providing both VOR and TACAN (Tactical Air Navigation) services for military and civilian use.
• Radial (Noun): A magnetic bearing line extending outward from an omnidirectional range station.
  • The flight plan specified following the 045 radial from the omnidirectional range.

Synonyms

• Radio beacon: A general term for a radio transmitter that emits signals for navigational purposes. (Note: An omnidirectional range is a specific, more sophisticated type of radio beacon.)
• Navald (Navigational Aid): A broader term encompassing all systems, including omnidirectional ranges, that assist in navigation.

Related Phrases

• "To track a radial": To maintain a specific course line defined by a constant magnetic bearing from an omnidirectional range.
  • The autopilot was engaged to track the 270-degree radial from the omnidirectional range.
• "VOR station": Another common way to refer to the physical ground-based component of the system.
  • The maintenance crew was dispatched to repair the remote VOR station.

Related Terminology

• Course Deviation Indicator (CDI): The cockpit instrument that displays the aircraft's position relative to the selected radial from an omnidirectional range.
• Line of sight: The propagation characteristic of VOR signals, meaning the aircraft and the omnidirectional range station must have an unobstructed radio path.

Noun

1. a navigational system consisting of a network of radio beacons that provide aircraft with information about exact position and bearing