![]() In addition, the optical and acoustic signaling of the NDB crossover must be provided. When flying from the „secondary“ direction of landing, the order of these letters in the group turns. NDB The NDB in the „Locator outer“ position must be identified by a group of 2 morse characters at a rate of 6/7 times per minute. Typically, NDB beacons are placed at 4 and 1 km along the extended runway axis. Instrument ApproachThe last option is to use for landing, more precsisely only for instrument approach. Space-based navigationDetermination of the position in the space (with an inaccuracy of ±5°!) is carried out by 2 NDB beacons, when we plot their bearing ☑80° to the map and the intersections are within ±5° our position. The second option is an "active" flight, where we eliminate the drag of the wind comparing iformation from the ADF and the magnetic compass. The problem arises when we do not eliminate the dragging of the wind (we will reach NDB beacon, but in the worst case we can also arrive from the opposite side). NDB can be used for marking flight corridors, space-based navigation or instrument approach landing.įlights paths/corridorsWhen used for marking flight corridors, we can either use the "passive" method, when we direct ADF to NDB beacon and fly until we reach the beacon. Approach - in the extended axis of the runway are beacons called NDB (Locator Outer) and L (Locator).Īs described above, the NDB is used to designate a particular navigation point, either on flight paths or when approaching on landing.On the track - indicates interest points on flight corridors.NDB can be divided by location where operates: As with the principle of magnetic north, we only get a "course", not an azimuth (more about azimuth - VOR beacon). Similarly, when we "exchange" the magnetic north with the NDB beacon and the magnetic compass with the ADF, we get information about bearing we are flying (how is a nose of a plane oriented to the beacon). The needle of magnetic compass shows us due to the physical laws our orientation to the magnetic north - bearing. The principle of function between NDB and ADF can be described as a connection between the magnetic north and the classical compass. NDB works with a onboard device ADF (Automatic Direction Finder). The NDB is a non-directional beacon which provides navigation data called bearing.
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