Electronic Sail Shape Sensor Network for Objective Trim Feedback
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Solution Overview
Problem
Current methods for sail trim adjustments rely on subjective human observation and visual cues, which are inaccurate and inefficient in optimizing sail shape and airflow for maximum thrust, particularly in dynamic wind conditions.
Innovation Solution
An array of sensors across the sail surface measures differential air pressure and provides real-time feedback and automated control adjustments to optimize sail shape and interaction between multiple sails, using wireless communication and existing shipboard networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If human observation and visual cues are used for sail trim adjustments, then the method is simple and requires minimal equipment, but the accuracy and efficiency of optimizing sail shape and airflow is poor
Solution Approach 1:
The sail surface is divided into multiple measurement zones with sensors distributed across the sail. Each sensor measures local pressure differential, and the collective data provides a comprehensive map of airflow patterns across the entire sail surface, enabling precise optimization of sail shape and trim.
Solution Approach 2:
The patent replaces human visual observation with an electronic sensor network that objectively measures pressure differentials across the sail. This substitution of mechanical/visual inspection with electronic measurement systems significantly improves measurement precision and eliminates subjectivity in sail trim optimization.
2Productivity
If manual trim adjustments are made based on visual inspection, then the operation is straightforward and requires minimal automation, but the productivity and response time to changing wind conditions is reduced
Solution Approach 1:
The sensor network provides real-time feedback on pressure differentials and airflow patterns across the sail surface. This feedback loop enables the system to automatically detect suboptimal trim conditions and trigger adjustments, significantly improving response time to changing wind conditions compared to manual inspection methods.
Solution Approach 2:
The system enables the sail to essentially adjust its own trim by using the sensor data to automatically control the trim lines. The sail monitoring and adjustment system operates autonomously based on measured airflow conditions, reducing the need for continuous manual intervention and improving productivity.
3Loss of information
If telltales and visual cues are used to indicate airflow, then the system is simple and requires no electronic equipment, but the information provided is subjective and not representative of ideal laminar airflow across the entire sail surface
Solution Approach 1:
The patent transitions from one-dimensional visual cues (telltales at specific locations) to a two-dimensional or three-dimensional map of pressure differentials across the entire sail surface. This dimensional expansion provides comprehensive airflow information throughout the sail, eliminating gaps in knowledge about airflow patterns.
Solution Approach 2:
The sensor network acts as an intermediary between the airflow and the operator. Instead of relying on indirect visual cues, the sensors directly measure pressure differentials and transmit this information, providing objective and complete data about airflow conditions across the entire sail surface.
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
Enables precise visualization and automated optimization of sail trim for improved propulsion efficiency, stability, and safety by accurately measuring airflow dynamics and adjusting control surfaces to maintain optimal performance and prevent instability.
Implementation Method 1
measuring the differential air pressure at numerous representative points across the surface of the sail
Implementation Method 2
Sails are designed to take advantage of the Bernoulli principle and other physical principals, similar to airplane wings, essentially creating an idealized airfoil
Data Source
AI summary
The instant invention describes devices and methods of measuring the differential air pressure at numerous representative points across the surface of the sail or sails or aerofoils and providing visual feedback of areas of ideal laminar flow and areas of less than optimal airflow with a calculation of thrust and providing an indication the maximal differential airflow and thrust. The invention utilizes an array of sensors that detect minute variations in barometric pressure and other data on each side of the sail surface. These sensors are connected together to form a network or net across the sail or aerofoil sail surface. This connection can be physical, using wires, or it may be wireless, using for example, but certainly not being limited to, Bluetooth LE 5.0 or other wireless topologies or technologies. This can be extended over multiple sails and monitor not only the sail but the interaction of the sails. Finally it can utilize a combination of wired and wireless connections to fit individual situations and can couple with existing terrestrial and satellite ship networks allowing for or aiding in automated control of the sails by the network.