Aircraft Guidance Prediction for Early Turn Deviation Alerts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current flight management systems fail to anticipate and prevent deviations from a predefined trajectory, often resulting in late alerts that do not allow sufficient time for corrective actions, especially due to variable aircraft speed, acceleration, and real wind conditions, leading to potential overflights of prohibited zones and elongation of flight distance.
Innovation Solution
A method and device that predict the real trajectory of an aircraft by calculating state, environment, and reference trajectory variables to determine potential deviations, triggering alerts before the aircraft exceeds the maximum roll criterion, allowing for proactive speed adjustments or manual control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the trajectory is calculated with a target roll close to the maximum roll to avoid excessively low roll and elongation of flight distance, then the flight distance and flight time are reduced, but the aircraft may deviate from the trajectory when the maximum roll is reached due to variable speed, acceleration, and wind conditions
Solution Approach 1:
The system performs preliminary calculation of a predicted real trajectory before the aircraft executes the turn, using current state variables, environment variables, and reference trajectory variables to forecast the actual path. This advance prediction allows the system to issue alerts before the aircraft deviates from the reference trajectory, enabling proactive corrective actions rather than reactive responses after deviation occurs.
Solution Approach 2:
The system continuously monitors state variables (aircraft speed, roll, heading), environment variables (wind conditions), and compares the predicted real trajectory against the reference trajectory. When a potential deviation is detected, feedback is provided to the crew through alerts, enabling them to adjust speed or apply corrections to maintain trajectory adherence while still achieving efficient flight paths.
2Length of stationary object
If the radius of the turn is underestimated to reduce flight distance and avoid overflight of prohibited zones, then the flight path is optimized, but the aircraft exceeds the maximum roll criterion and deviates from the trajectory
Solution Approach 1:
The system calculates the predicted real trajectory in advance, incorporating the relationship between turn radius, aircraft speed, and roll angle. By forecasting the actual path before execution, the system can identify whether an underestimated turn radius will cause maximum roll exceedance, allowing for proactive adjustment of the turn radius to maintain both flight efficiency and adherence to roll constraints.
Solution Approach 2:
The system dynamically adjusts turn parameters (radius, rate, timing) based on real-time state variables and environmental conditions. When the prediction indicates that the maximum roll will be exceeded, the system modifies the turn parameters to ensure criterion observance while minimizing the impact on flight distance and time, thus resolving the contradiction between compact turn radius and roll constraint compliance.
3Loss of information
If known alert systems are used that issue alerts after deviation occurs, then the crew is informed of the situation, but the alerts are too late to allow sufficient time for corrective actions
Solution Approach 1:
The core innovation is calculating the predicted real trajectory before the aircraft executes the maneuver and comparing it against the reference trajectory in advance. This preliminary assessment enables the system to issue alerts before deviation occurs, providing the crew with sufficient lead time to take corrective actions such as speed adjustment or manual control intervention, thereby eliminating the time loss associated with reactive alerting systems.
Data Source
AI summary
The present invention relates to a device and a method for assisting aircraft guidance. The method for assisting aircraft guidance is operated by a computation platform for aircraft and comprises steps:of acquisition of state variables characterizing an aircraft in flight, of environment variables characterizing the environment of the aircraft and of trajectory variables characterizing a reference trajectory of the aircraft;of calculation of a predicted real trajectory for an upcoming change of direction of the aircraft, based on said state variables, on said environment variables and on said reference trajectory variables;of determination of conformity to determine if the predicted real trajectory which is calculated conforms or does not conform to the reference trajectory; andof configuration of a trajectory deviation alert, when the predicted real trajectory does not conform to the reference trajectory.