Low altitude head up display for aircraft
First Claim
1. A head up visual approach aircraft instrument, having a screen on which the pilot of an aircraft views a collimated display of flight guidance information against a background of the outside world, the display including first indicia movable vertically on the screen as a target for the pilot, second indicia movable vertically on the screen representing the flight path of the aircraft, for alignment of both indicia with an outside world aiming point by manipulation of the aircraft altitude and speed, wherein said instrument comprises:
- means for positioning said first indicia on said screen successively in accordance with an approach path to said outside world aiming point, then along a transition path from said approach path and then in alignment with the horizon to define a path above and generally parallel with the ground; and
means for positioning said second indicia successively in accordance with an approach path command, and then with a transition path command, manipulation of the aircraft by the pilot to align said second indicia with said first indicia causing said aircraft to follow said approach and transition paths and to continue in a path above and generally parallel with the ground, as for ejection of cargo from the aircraft while airborne.
2 Assignments
0 Petitions
Accused Products
Abstract
An aircraft instrument with a reflective screen on which the pilot views a collimated head up display of flight guidance information against a background of the outside world, for low altitude maneuvers. The guidance information includes a pitch stabilized reference indicia and a flight path indicia. The pitch reference and flight path indicia are positioned on the screen in accordance with aircraft operating parameters and pilot inputs to provide for a flare maneuver to touchdown or to direct the pilot in a path parallel with the surface of the ground, as for ejecting cargo.
34 Citations
6 Claims
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1. A head up visual approach aircraft instrument, having a screen on which the pilot of an aircraft views a collimated display of flight guidance information against a background of the outside world, the display including first indicia movable vertically on the screen as a target for the pilot, second indicia movable vertically on the screen representing the flight path of the aircraft, for alignment of both indicia with an outside world aiming point by manipulation of the aircraft altitude and speed, wherein said instrument comprises:
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means for positioning said first indicia on said screen successively in accordance with an approach path to said outside world aiming point, then along a transition path from said approach path and then in alignment with the horizon to define a path above and generally parallel with the ground; and means for positioning said second indicia successively in accordance with an approach path command, and then with a transition path command, manipulation of the aircraft by the pilot to align said second indicia with said first indicia causing said aircraft to follow said approach and transition paths and to continue in a path above and generally parallel with the ground, as for ejection of cargo from the aircraft while airborne. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification