Patent ID: 9171474
Filing Date: 2015-10-27
Classification: B64D,G01C,G08G

Abstract:
1. A navigation aid instrument for an aircraft pilot, comprising: a first display device that extends horizontally relative to an instrument panel of an aircraft, wherein the first display device has a centre embodying a longitudinal axis of the aircraft, and a movable mobile marker, wherein the mobile marker is movable on either side of the centre of the first display device, wherein the mobile marker measures an angle formed by the longitudinal axis of the aircraft and a horizontal component of a velocity vector of the aircraft, thereby indicating a flight direction of the aircraft relative to a ground, wherein the angle is positive on a right side of the pilot when the pilot is looking at a nose of the aircraft, and wherein the mobile marker and the centre of the display device are operably connected so that the further away from the centre of the display device that the mobile marker is, the more the aircraft has drifted from a rectilinear flight direction that will lead the aircraft to a runway threshold.