Definition of RMI
RMI stands for “Radio Magnetic Indicator,” a navigation instrument used in aviation. It displays the direction and bearing of a particular magnetic signal transmitted by a ground-based non-directional beacon (NDB), which allows pilots to navigate accurately, especially during limited visibility or poor weather conditions.
The RMI detects the magnetic signals transmitted by the NDB and maps them onto the compass face of the instrument, indicating the direction and distance from the aircraft to the station. Pilots can use this information to determine the aircraft’s position and orient themselves towards their destination.
The instrument is also equipped with a bearing pointer, which allows the aircraft to track towards the beacon. With the correct alignment, the bearing pointer points directly towards the beacon, allowing pilots to fly towards the station in a straight line.
Overall, the RMI is a vital navigation tool that helps pilots reach their destination safely and efficiently. Its accurate and reliable readings allow pilots to stay on course, even in challenging conditions, making it a critical component in aviation navigation systems.
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