What is the function of a VOR in flight navigation?

A VOR, or VHF Omnidirectional Range, serves as a crucial navigational aid for pilots by providing a specific reference point in the navigation space. It emits radio signals that allow pilots to determine their position relative to the frequency of the VOR. This capability is essential for maintaining course and direction during flight, especially when flying under Instrument Flight Rules (IFR).

By tuning into a VOR station, pilots can identify their bearing from the station and navigate along specific airways, ensuring they are on course towards their destination. The information received from a VOR is presented on the cockpit instruments, enabling pilots to follow or intercept specific radials, which enhances situational awareness and improves navigation accuracy.

The other functions listed, such as speed calibration, altitude management, and communication with air traffic control, are not directly related to the VOR’s primary purpose. Speed calibration is typically handled by other instruments, altitude management is guided by altimeters and flight profiles, and communication with ATC relies on radio voice communication rather than navigational aids like VORs.