QDM

QDM : magnetic Raising of the station by the Aircraft (QDM = towards the Hub) or magnetic road to follow to join the station.

A radioelectric beacon makes it possible to define 360 radials 0° in 360° of one in a degree.

One notices that the radial one pointed towards North is the 0 or 360, towards the East the 090, the South the 180, and the West the 270.

Let us note that each radial is a half-line and that one should not confuse, for example radial the 200 with radial the 020

Note: QDM = QDR -180°

Example: An aircraft located at the west of a station is on the QDM 090° and the QDR 270°.

to see Radionavigation

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