Aircraft display devices
First Claim
1. A display device for an aircraft comprising:
- a circular array of radially extending selectively activatable display elements, the radially inner ends of which elements define a central space;
within the said central space, a symbol fixed with respect to the aircraft in use; and
means for selectively activating said display elements in accordance with aircraft attitude whereby the selected display elements form a visible pattern whose geometrical relationship with respect to said symbol is indicative of the aircraft attitude; and
wherein said means for selectively activating said display elements activates a group of said elements which together form a sector of said circular array whose angular position in the array relative to said symbol is indicative of the roll angle of the aircraft; and
said sector becomes progressively a larger angle sector as the aircraft pitch angle increases from zero in one direction and a smaller angle sector as the aircraft pitch angle increases from zero in the opposite direction.
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Accused Products
Abstract
An aircraft attitude display device comprising: a circular array of radially extending selectively activatable display elements (5), the radially inner ends of which constitute a boundary defining a central space; within the said central space, a fixed aircraft symbol (7); and means for selectively activating the said display elements in accordance with aircraft attitude so that the selected display elements form a visible pattern, e.g. a sector of the array, bearing a geometrical relationship with respect to the aircraft symbol indicative of the aircraft attitude.
The device is suitable for implementation using liquid crystal display technology to give a stand-by display of aircraft pitch and roll which is readily understandable by pilots since it is similar to the display given by conventional rolling ball action aircraft attitude instruments.
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Citations
8 Claims
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1. A display device for an aircraft comprising:
- a circular array of radially extending selectively activatable display elements, the radially inner ends of which elements define a central space;
within the said central space, a symbol fixed with respect to the aircraft in use; and
means for selectively activating said display elements in accordance with aircraft attitude whereby the selected display elements form a visible pattern whose geometrical relationship with respect to said symbol is indicative of the aircraft attitude; and
wherein said means for selectively activating said display elements activates a group of said elements which together form a sector of said circular array whose angular position in the array relative to said symbol is indicative of the roll angle of the aircraft; and
said sector becomes progressively a larger angle sector as the aircraft pitch angle increases from zero in one direction and a smaller angle sector as the aircraft pitch angle increases from zero in the opposite direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- a circular array of radially extending selectively activatable display elements, the radially inner ends of which elements define a central space;
Specification