Aircraft Icing Detection Using Zone-Based Parameter Monitoring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ice detection systems for aircraft fail to detect icing conditions in certain regions, particularly during climb, hold, and descent phases, leading to potential safety hazards due to non-detection of icing on aircraft surfaces.
Innovation Solution
A method and apparatus that measure aircraft-related and environment-related parameters to determine if the aircraft is within a predefined icing zone, triggering an alert and activating anti-icing systems after a predetermined time within the zone, ensuring detection of icing conditions without degrading fuel efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional ice detection systems are used, then the system structure remains simple, but the detection coverage is insufficient and cannot detect icing in non-detection regions
Solution Approach 1:
The patent introduces an intermediary detection system consisting of multiple temperature sensors positioned at different locations on the aircraft (wing leading edges, empennage, etc.) that act as mediators to detect icing conditions in regions where conventional detectors fail. These sensors serve as intermediaries between the undetected icing conditions and the central control system, enabling indirect detection of icing in non-detection zones.
Solution Approach 2:
The detection system is segmented into multiple independent temperature sensing units distributed at different critical locations on the aircraft. Each sensor independently monitors its local zone, and the control system integrates information from all segments to achieve comprehensive coverage. This segmentation allows the system to detect icing in multiple regions simultaneously without requiring a single complex detector.
2Reliability
If anti-icing systems are activated continuously to ensure safety, then the reliability of ice protection is improved, but fuel efficiency deteriorates
Solution Approach 1:
The system implements feedback control by continuously monitoring temperature data from multiple sensors and adjusting anti-icing system activation based on actual detected conditions. The control system receives feedback from all temperature sensors, analyzes the data to determine if icing conditions exist in any zone, and activates anti-icing systems only when and where needed, rather than continuous activation.
Solution Approach 2:
The system performs preliminary detection using distributed temperature sensors to identify potential icing conditions before they become critical. By detecting temperature trends and conditions that precede actual ice formation, the system can activate anti-icing systems in advance only in specific zones where needed, preventing full aircraft-wide activation.
3Reliability
If multiple temperature sensors are deployed at different locations, then the detection coverage is improved, but the device complexity increases
Solution Approach 1:
The temperature sensors deployed throughout the aircraft serve multiple functions: they monitor local temperature for icing detection, provide data for determining aircraft position in the icing envelope, and contribute to overall system diagnostics. This multi-functionality reduces the need for separate detection systems at each location, simplifying the overall device complexity while maintaining comprehensive coverage.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A method for detecting icing conditions for an airborne aircraft operating within a zone defined using one or more aircraft-related parameter and one or more environment parameter includes: (a) In no particular order: (1) measuring the aircraft-related parameter(s) to obtain aircraft-related parametric value(s); and (2) measuring the environment-related parameter(s) to obtain environment-related parametric value(s). (b) Employing the aircraft-related parametric value(s) and the environment-related parametric value(s) to determine whether the aircraft is operating within the zone. (c) If the aircraft is operating within the zone, observing elapsed time during which the aircraft is operating within the zone. (d) If the aircraft has operated within the zone for a predetermined elapsed time-in-zone, displaying an alert message for a user to indicate a likelihood of presence of icing conditions.