What is the purpose of a VOR in aviation?

A VOR, or VHF Omnidirectional Range, serves as a crucial tool in aviation for navigation. It works by transmitting radio signals that allow pilots to determine their position relative to the VOR station and navigate along established airways with precision. The VOR system provides continuous information that helps pilots maintain their intended flight path and supports situational awareness in the cockpit.

Using the signals from a VOR, pilots can identify their radial—essentially the direction from the VOR station—and use this information to plot their course and make necessary adjustments during flight. This capability is vital for both en-route navigation and for approaches to airports, enhancing safety and efficiency.

The other options do not accurately describe the function of a VOR. Weather updates are typically obtained through separate systems, altitude and airspeed are provided by instruments within the aircraft, and automatic landing assistance usually involves more complex systems such as an ILS (Instrument Landing System). Thus, the VOR's specific role in navigation through radio signals distinguishes it as an essential component of flight operations.