Aircraft Braking System Optimizing Runway Exit Selection
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Solution Overview
Problem
Current aircraft braking systems during landing are inefficient, leading to excessive runway occupancy times and fuel consumption, as they do not account for varying landing conditions and require pilots to manually estimate deceleration and exit selection, often resulting in supplementary thrust and potential overshooting of the runway end.
Innovation Solution
A system and method that acquire the aircraft's position and speed, calculate deceleration distances and speeds based on predefined laws, and provide visual and audible alerts to assist in optimal braking, allowing for automatic adjustment of braking force and graphical representation of exit options, ensuring safe exit selection and minimizing fuel consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If maximum braking is applied to take the first exit, then runway occupancy time is reduced, but brakes overheat causing premature wear and compromised profitability
Solution Approach 1:
The braking system dynamically adjusts braking intensity based on real-time monitoring of brake temperature and wear state. The control unit modifies braking force commands to maintain optimal braking performance while preventing overheating, transitioning from static maximum braking to adaptive dynamic braking that responds to actual brake conditions.
Solution Approach 2:
The system implements feedback loops that continuously monitor brake temperature, wear state, and deceleration performance. This feedback information is used by the control unit to adjust braking commands in real-time, ensuring that braking intensity is optimized for both runway occupancy reduction and brake durability preservation.
2Reliability
If pilot visually estimates exit selection, then safety conditions are prioritized, but fuel consumption increases and runway occupancy time extends
Solution Approach 1:
The system replaces the pilot's visual estimation and manual judgment with an automated computer-based calculation system. The control unit computes optimal exit selection and braking intensity based on precise measurements of aircraft state, runway conditions, and exit geometry, substituting human visual estimation with automated computational analysis that optimizes both safety and fuel efficiency.
Solution Approach 2:
The system changes the parameter of exit selection from a qualitative visual estimate to a quantitative optimized calculation. By computing the precise braking intensity and exit timing based on multiple parameters (aircraft weight, runway surface, weather, exit angle), the system identifies the optimal exit that minimizes fuel consumption while maintaining safety margins.
3Extent of automation
If auto-brake system is used, then braking automation is provided, but flexibility to adapt to particular landing conditions is lost
Solution Approach 1:
The automated braking system transitions from a fixed, static auto-brake mode to a dynamic adaptive system that continuously adjusts braking parameters based on real-time conditions. The control unit processes live data from sensors monitoring runway surface, weather, aircraft weight, and brake state, dynamically modifying braking commands to adapt to varying landing conditions while maintaining full automation.
Solution Approach 2:
The system changes the braking control parameters from fixed pre-programmed values to dynamically adjusted parameters based on actual landing conditions. The control unit calculates optimal braking intensity and duration by processing multiple condition parameters, enabling the automated system to adapt its behavior to specific runway surfaces, weather conditions, and aircraft states.
Data Source
AI summary
A system includes a means of acquiring the position of the aircraft on the runway and its speed in the taxiing phase, a means of storing data concerning the runway and a predefined deceleration law, a function for calculating the distance that the aircraft will have traveled on the runway when it has reached a certain speed and/or the speed that it will have reached when it has traveled a certain distance: the calculated distance makes it possible to adapt the braking by comparison with the distance remaining to reach the end of the runway; the calculated distance makes it possible to adapt the braking by comparison with the distance remaining to reach the end of the runway; the calculated speed makes it possible to adapt the braking by comparison with the maximum speed to take the exit.