Method and apparatus for controlling vehicle attitude display
A vehicle attitude display such as a Primary Flight Display presents pitch and bank information by displaying a vehicle avatar as fixed, with respect to a moving artificial horizon while displaying a movable symbol at a position along the vehicle avatar that is proportional to the symmetry of the vehicle. Parts of the display are dynamically emphasized or de-emphasized to support rapid assimilation of key data. Display format may be dynamically adjusted depending on vehicle use conditions. Display is intended for use both in-vehicle, and remotely.
1. A vehicle attitude display controller adapted to cause a display to present pitch and bank information of a vehicle associated with said display by representation of a vehicle avatar representing said vehicle with respect to an artificial horizon and graduated bank and pitch angle scale, characterized in that said display controller is adapted to cause said vehicle avatar to be displayed in fixed relation to said display and to display said artificial horizon at an angle with respect to said vehicle avatar corresponding to the real instantaneous bank angle of said vehicle and wherein said vehicle attitude display controller is further adapted to cause said display unit to display a movable symbol in the form of a lozenge in a horizontal position with respect to the extremities of the vehicle avatar that is proportional to the symmetry of the vehicle,
wherein said vehicle attitude display controller is adapted to cause said display to represent said avatar as comprising lateral lines separated by an index point, and to cause the display to represent said movable symbol as moving along said lateral lines.
2. A vehicle attitude display controller according to claim 1 wherein said vehicle attitude display controller is adapted to cause said display to present pitch information with a movable linear scale aligned perpendicularly to the artificial horizon and passing through said vehicle avatar, such that an index point of said vehicle avatar designates an angle value on said scale reflecting the real instantaneous pitch attitude of said vehicle.
3. A vehicle attitude display controller according to claim 1 wherein said vehicle attitude display controller is adapted to cause said display to represent said movable symbol is moved parallel to the pitch rotation axis of said vehicle.
4. The vehicle attitude display controller of claim 1 further adapted to cause said display unit to display a movable polar scale having its pole at said index point, whereby the bank attitude of said vehicle can be read from said polar scale with reference to a planar feature of said vehicle avatar.
5. The vehicle attitude display controller of claim 4 wherein said vehicle attitude display controller is adapted to cause said display unit to display a planar feature representing the wingtip of the lower wing of said vehicle.
6. The vehicle attitude display controller of claim 5 wherein said vehicle attitude display controller is adapted to cause said display unit to display said graduated scale outside the radius described by said planar feature as said vehicle changes bank.
7. The vehicle attitude display controller of claim 5 wherein said vehicle attitude display controller is adapted to cause said display unit to display more relevant graduations of the pitch scale or of the bank scale in emphasized form with regard to less relevant respective graduations of the pitch scale or of the bank scale.
8. The vehicle orientation display controller of claim 7 wherein said vehicle orientation display controller is adapted to cause said display unit to display graduations of the pitch scale below pitch values of +/−10 to 15° with respect to the instantaneous value in emphasized form with respect to other graduations on the pitch scale.
9. The vehicle orientation display controller of claim 7 wherein said vehicle orientation display controller is adapted to cause said display unit to display graduations of the bank scale on the side the vehicle is banking towards in emphasized form with respect to the side the vehicle is banking away from.
10. The vehicle orientation display controller of claim 1 further comprising a mode selector adapted to cause said vehicle orientation display controller to output a display in accordance with any preceding claim in case where present conditions correspond to a first predetermined set of conditions, and to cause said vehicle orientation display controller to output an alternative display configuration in case where said present conditions correspond to a second predetermined set of conditions.