What is the primary function of a VOR in aviation?

The primary function of a VOR, or VHF Omnidirectional Range, in aviation is to assist with navigation using radio signals. VOR is a type of radio navigation system that allows pilots to determine their position and stay on course by receiving signals from ground-based VOR stations. These stations transmit a unique signal that can be used by aircraft onboard equipment to calculate the aircraft's bearing relative to the station.

This capability is crucial for enabling pilots to navigate accurately in the airspace, particularly in Instrument Flight Rules (IFR) conditions, where visual references may be limited. By using VOR navigation, pilots can follow specific airways and maintain situational awareness during flight. Understanding how to effectively interpret and utilize VOR signals helps enhance safety and efficiency in aviation operations. Other options, such as providing visual flight guidance, measuring altitude, or serving as a weather monitoring system, do not align with the core function of VOR systems in navigation.