Continuous Dual Wrap End Closure for Aircraft Anti-Icing Boots
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Solution Overview
Problem
Aircrafts face issues with ice formation on propeller blades and other parts during cold temperatures, leading to aerodynamic disruptions, weight addition, vibrations, and potential engine damage from loose ice, which existing pneumatic ice protection systems do not adequately address.
Innovation Solution
An anti-icing system featuring a continuous dual wrap end closure mechanism using elastomeric material tubes that inflate with compressed gas to disrupt ice formation, with a deicing boot configuration that alternates inflation between two sets of tubes to minimize airflow disruption and effectively remove ice.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pneumatic ice protection systems are used, then ice formation can be disrupted, but the system complexity and energy consumption increase
Solution Approach 1:
The deicing boot is divided into multiple independent tubes arranged in parallel, with each tube capable of independent inflation and deflation. This segmentation allows the system to protect against ice formation more effectively while maintaining simpler control of individual tube operations rather than managing a single complex pneumatic system.
Solution Approach 2:
The system employs periodic inflation and deflation of the tubes in alternating sequences. First tubes are inflated to disrupt ice formation, then deflated, followed by inflation of adjacent tubes. This periodic action maintains ice protection effectiveness while reducing continuous energy consumption compared to sustained pneumatic pressure.
2Reliability
If continuous pneumatic pressure is applied to prevent ice, then ice disruption is effective, but energy consumption increases
Solution Approach 1:
The system uses intermittent inflation cycles rather than continuous pressure. Tubes are inflated only when needed to disrupt ice formation, then deflated to conserve energy. This periodic operation maintains reliable ice protection while significantly reducing overall energy consumption compared to continuous pneumatic pressure systems.
Solution Approach 2:
The system dynamically adjusts the inflation state of individual tubes based on detected ice conditions. Rather than maintaining constant pneumatic pressure across all tubes, the system activates only the tubes needed for current ice disruption tasks, optimizing energy usage while maintaining effective ice protection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively prevents and removes ice from aircraft surfaces, maintaining aerodynamics and safety by using elastomeric material tubes that inflate with compressed gas to mechanically disrupt ice formation, thereby addressing the challenges of ice accumulation and its associated risks.
Implementation Method 1
a plurality of tubes (404) including a first set of tubes (406) and a second set of tubes (408), each tube comprising an elastomeric material
Implementation Method 2
each tube closed at their respective ends by a continuous dual wrap end closure configured to inhibit fluid communication relatively between the first set and the second set of tubes
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
An anti-icing system may comprise a deicing boot (402) of an elastomeric material comprising a plurality of tubes (404), wherein the deicing boot comprises a first set of tubes (406) and a second set of tubes (408), wherein each of the first set of tubes and the second set of tubes have a corresponding end, and wherein the corresponding end is coupled to a continuous dual wrap end closure.