NAVIGATION DIRECTOR SYSTEM

摘要

A navigation system is disclosed in which a displayed map is continuously and accurately controlled during flight of an aircraft to display the true relation between the aircraft and the terrain over which it passes. The displayed map is automatically selected from a plurality of stored maps for display, in response to pilot-initiated signals. A cockpit control panel is provided with manually actuable controls for the selection of a start point and a destination which define a direct great circle route therebetween. A route segment indication is displayed of the selected direct route or at a manually-selected offset course. The indication is displayed at a distance from an aircraft symbol which corresponds to the flight path error. A vernier deviation indication is displayed to provide a magnified presentation of the flight error. A series of indicators provides supplementary operating and status data to the pilot. The indicators include a Dead Reckoning indicator which indicates that the system is navigating in a dead reckoning mode, and an Off Chart indicator to indicate that the aircraft position is not on the selected navigation map.