Head-up display
First Claim
1. A head-up-display for indicating the attitude and flight-path angle vertically, the attitude in roll and the heading attitude of an air vehicle, the vehicle having means (5,6) for determining said attitudes and flight-path angle and for emitting corresponding first signals, the head-up-display comprising a screen (10) and means (7,8) for translating said signals to a corresponding display, which is projected together with at least one symbol (13) of a velocity vector of the vehicle, and a symbol (14) of the x-axis of the vehicle, on the screen, said screen comprising a transparent but reflecting plate for the indicator display and said symbols, characterized in that the head-up-display is arranged to present the display (12) as a depiction of at least a portion of the inside of a space-stable sphere with its center in said vehicle, the display depicting at least portions of latitude circles, (15, 16, 19, 20), the nadir of the circles increasing the further away a circle is from the zenith or nadir of the sphere, and meridian markings (18) adjacent said circles.
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Accused Products
Abstract
A head-up display for indicating the attitude and flight-path angle vertically, the attitude in roll and preferably the heading attitude and heading track angle of a vehicle, preferably an air vehicle, which in addition to the inertial navigation (5) for determining said attitudes and angles comprises a transparent but partly reflecting plate (10), a so-called "combiner glass" glass for projecting a corresponding display together with at least one symbol (14) of the x-axis of the vehicle. Particularly characteristic is that the head-up-display is arranged to show the display (12) as at least a portion of the inside of a space-stable sphere with its center in said vehicle, the display being provided with latitude circles (15, 16, 19, 20) and preferably meridian markings (18).
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Citations
5 Claims
- 1. A head-up-display for indicating the attitude and flight-path angle vertically, the attitude in roll and the heading attitude of an air vehicle, the vehicle having means (5,6) for determining said attitudes and flight-path angle and for emitting corresponding first signals, the head-up-display comprising a screen (10) and means (7,8) for translating said signals to a corresponding display, which is projected together with at least one symbol (13) of a velocity vector of the vehicle, and a symbol (14) of the x-axis of the vehicle, on the screen, said screen comprising a transparent but reflecting plate for the indicator display and said symbols, characterized in that the head-up-display is arranged to present the display (12) as a depiction of at least a portion of the inside of a space-stable sphere with its center in said vehicle, the display depicting at least portions of latitude circles, (15, 16, 19, 20), the nadir of the circles increasing the further away a circle is from the zenith or nadir of the sphere, and meridian markings (18) adjacent said circles.
Specification