Abstract:
The general field of the invention is that of head viewing systems for aircraft comprising a head support, a viewing device, a detection of posture of said head support, means for detecting the current heading of an aircraft and means for graphically generating said heading. The system according to the invention comprises means of control, display and selection of headings arranged so as: to display in response to a first command, a second so-called setpoint heading and a third heading termed a “support heading” corresponding to the direction of the head support in a terrestrial reference frame, said direction given by the information arising from the detection of posture of said head support and the means for detecting the current heading; to replace, in response to a second command, said second heading by said third heading, said third heading thus becoming the new heading setpoint.