Ep. 70: VOR Basics | What they are and how they work

Ep. 70: VOR Basics | What they are and how they work

Introduction to VOR Navigation

In this section, John introduces the VOR navigation system and explains its relevance in modern aviation.

Basic 6-Pack Instruments

  • Most training aircraft have basic 6-pack instruments and a VOR.
  • The VOR is an old-school way of navigating that is still relevant today.
  • Each ground-based VOR station is independent with its own power source and transmitter.

Understanding the VOR Instrument

  • The ring around the instrument is connected to the OBS knob (Omni Bearing Selector).
  • Spinning the ring simulates turning it, causing the needle to move left or right.
  • The horizontal needle is called a CDI (Course Deviation Indicator).
  • The To/From flag indicates whether you are flying towards or away from the station.
  • When the flag says "From" and the needle centers, that's your current radial.

Using Radials for Navigation

  • A compass rose on the instrument matches one on a sectional chart with 360 radials coming off it.
  • You can be located on any one of those lines during 63 radials coming from the station.
  • Pointing your aircraft in any direction won't change CDI; only X and Y-axis matter.

VOR Navigation Basics

In this section, the instructor explains the basic components of VOR navigation and how to use them in flight.

Understanding Radials and the OBS Knob

  • The number on the VOR display shows what radial we are on from the station.
  • To change radials, twist the OBS knob until the needle centers on a desired radial.
  • The to-and-from flag tells you if you are flying towards or away from the station on a certain radial.

Using VOR Navigation in Flight

  • Your heading does not matter when using VOR navigation; it is all about your position relative to the station.
  • The direction needle will be affected by both your aircraft's movement and changes made to the OBS knob.
  • When interpreting indications on a written exam, remember that a centered needle indicates your position from the station.

Conclusion

  • For more information on using VOR navigation in-flight and for passing written exams, check out their other videos.
  • Remember: "If you can't fly every day, then flyohmygosh.com."