Avionic Display System for Vertical Situation Instability Prediction
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Solution Overview
Problem
Pilots face challenges in adhering to computed vertical descent profiles during aircraft approach and landing due to dynamic factors like wind conditions and aircraft instability, leading to deviations that increase fuel consumption, operational costs, and risk of unstable approaches and hard landings.
Innovation Solution
An avionic display system that predicts potential aircraft instability and generates dynamically-adjusted drag device deployment cues on a Vertical Situation Display (VSD) to help pilots avoid instability by optimizing drag device deployment schemes, which can be updated in real-time to minimize deviations from the computed vertical descent profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If pilots follow FMS-computed vertical descent profile, then fuel consumption and operational costs are reduced, but deviations occur due to dynamic factors like wind conditions and aircraft instability
Solution Approach 1:
The system performs preliminary prediction of instability conditions and pre-computes optimized drag device deployment schemes before actual deviations occur. By projecting future aircraft states and preparing corrective actions in advance, the system enables pilots to maintain the vertical descent profile despite dynamic weather and aircraft conditions, thereby preventing fuel-wasting deviations while ensuring reliable adherence to the planned profile.
2Stability of the object's composition
If drag device deployment is optimized to prevent instability, then aircraft stability is improved, but the complexity of the display system increases
Solution Approach 1:
The system introduces an intermediary prediction and optimization module that sits between the FMS vertical descent profile computation and the pilot's decision-making process. This intermediary layer automatically projects future aircraft states, predicts instability conditions, and generates optimized drag device deployment schemes, thereby maintaining aircraft stability without requiring the pilot to manually analyze complex flight dynamics or interpret overly complicated display information.
3Manufacturing precision
If real-time prediction and adjustment of drag device deployment is implemented, then deviations from vertical descent profile are minimized, but computational requirements and system complexity increase
Solution Approach 1:
The system changes key flight parameters (drag device deployment timing and magnitude) based on predicted instability conditions. By dynamically adjusting these parameters in real-time according to projected aircraft states and weather conditions, the system achieves precise adherence to the vertical descent profile. The computational complexity is managed by focusing calculations on critical parameters rather than performing exhaustive simulations of all possible flight scenarios.
Data Source
AI summary
Avionic display systems and methods are provided for generating avionic displays including instability prediction and avoidance symbology, such as dynamically-adjusted drag device deployment cues. In one embodiment, the avionic display system includes a controller and an avionic display device, which is coupled to the controller and on which an avionic display, such as a Vertical Situation Display (VSD), is generated. The controller is configured to: (i) project whether an unstable aircraft state will occur during an approach flown by an aircraft; (ii) when an unstable aircraft state is projected to occur, determine whether implementation of an optimized drag device deployment scheme can prevent the projected occurrence of the unstable aircraft state; and (iii) if determining that the implementation of the optimized drag device deployment scheme can prevent occurrence of the projected unstable aircraft state, generating symbology on the avionic display indicative of the optimized drag device deployment scheme.