Dynamic Pitch Scale Adjustment for Aircraft Attitude Reference
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Solution Overview
Problem
Existing aircraft viewing systems struggle to maintain a conformal representation of flight parameters during substantial crosswind conditions, leading to inaccurate attitude references in critical flight phases, particularly in heading-up and track-up modes.
Innovation Solution
The method dynamically adjusts the pitch scale in an on-board viewing system by varying the position of its symbols relative to the aircraft icon and speed vector, ensuring they remain in a conformal position by modifying the angular distance between scale sets based on the angular distance between these symbols, thereby maintaining readability and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pitch scale remains fixed and centred on the aircraft icon, then the attitude reference is stable under normal conditions, but the speed vector becomes isolated from the pitch scale during substantial crosswind conditions, losing accurate attitude reference
Solution Approach 1:
The pitch scale transitions from a fixed static representation to a dynamic adjustable representation. The angular distance between the two series of symbols is modified based on the angular distance between the aircraft icon and speed vector, allowing the pitch scale to adapt its configuration dynamically to maintain conformal positioning of all symbols during crosswind conditions
2Ease of operation
If the synthetic image is shifted to keep the pitch scale centred on the viewing screen, then the pitch scale remains visible, but the symbolic representation is displayed in a non-conformal position, losing accurate spatial relationship
Solution Approach 1:
Instead of shifting the entire synthetic image in the horizontal plane, the invention modifies the angular distance between the two series of pitch scale symbols, creating a dynamic dimensional adjustment that preserves conformal positioning while maintaining pitch scale visibility and centrality on the viewing screen
Data Source
AI summary
Methods for graphically managing a pitch scale displayed in an on-board viewing system for an aircraft, the viewing system comprises a graphics computer carrying out the graphical management of the symbols and a viewing screen. The symbolic representation displayed on the viewing screen includes an angular pitch scale, a symbol, referred to as the aircraft icon, that is representative of the attitude of the aircraft and a symbol, referred to as the speed vector that is representative of the direction of the speed of the aircraft. The angular distance separating the “bars” of the scale varies so that the symbols representative of the attitude of the aircraft and of the speed vector remain constantly close to one of the two bars of the scale, even in the event of a strong crosswind. The shape of the bars is either constant or variable.