What is the primary purpose of a VOR?

The primary purpose of a VOR, or VHF Omnidirectional Range, is to provide accurate bearing information to pilots. This radio navigation system enables aircraft to determine their position relative to the VOR station and to navigate along desired flight paths. By receiving signals transmitted in all directions from a VOR station, pilots can ascertain their heading relative to the station, facilitating precise navigation especially when operating under instrument flight rules (IFR).

Other functions mentioned, like visual guidance or ground communication, are not the main roles of VOR systems. VOR focuses specifically on delivering navigational data rather than visual aids or enhancing communication. Additionally, monitoring weather conditions falls outside the scope of what a VOR is designed to do. Thus, the fundamental role of a VOR in aviation navigation is to provide accurate bearing information, which is critical for maintaining course and ensuring safe aircraft operation.