Rail-Mounted Auxiliary Sail System for Ships
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Solution Overview
Problem
Existing auxiliary sail systems for conventional ships face challenges such as complexity in design, high installation costs, intrusiveness, lack of safety features, obstruction during cargo operations, and incompatibility with retrofitting to existing vessels, limiting their practical implementation.
Innovation Solution
A rail-mounted auxiliary sail system with movable sail units, automatic reefing and mast rotation safety features, and a rope system for easy deployment and stowage, allowing for incremental sail area adjustment and rapid response to extreme wind conditions, ensuring safety and minimizing interference with cargo operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If auxiliary sails are mounted on conventional ships, then fuel savings and propulsion assistance are achieved, but the system complexity and installation cost increase significantly
Solution Approach 1:
The sail system is divided into multiple independent sail units (102) that can be individually mounted, adjusted, and removed. Each sail unit consists of separate components (sail (108), booms (104, 106), mast (110)) that can be assembled and disassembled independently, reducing overall system complexity while maintaining fuel efficiency benefits
Solution Approach 2:
The sail units are designed with movable and adjustable components including rotatable booms, adjustable masts, and retractable mechanisms that allow the sail area to be dynamically changed based on operational needs and wind conditions, optimizing energy use without requiring a permanently complex fixed structure
2Power
If auxiliary sails are installed on existing ships, then propulsion assistance is achieved, but installation intrusiveness and cost increase
Solution Approach 1:
The system uses discrete sail units that can be independently installed at various locations on the ship without requiring major structural modifications. Each unit can be mounted on existing rail systems or attachment points, minimizing intrusiveness while collectively providing significant propulsion assistance
Solution Approach 2:
The sail units are designed with universal mounting capabilities that can be adapted to different ship types and configurations. The same basic sail unit design can be installed on various vessel classes, reducing customization costs and installation complexity while maintaining effective propulsion assistance
3Use of energy by moving object
If sail area is increased for better wind capture, then propulsion efficiency improves, but safety risks under extreme winds increase
Solution Approach 1:
The system incorporates automatic reefing mechanisms with sensors that detect wind speed and conditions, dynamically adjusting the sail area by rotating booms and retracting sails when extreme winds are detected. This maintains optimal propulsion efficiency in normal conditions while automatically reducing exposure to dangerous wind forces, ensuring both efficiency and safety
Solution Approach 2:
The sail units include feedback systems with wind sensors, force detectors, and automatic control mechanisms that continuously monitor wind conditions and adjust sail deployment accordingly. When extreme winds are detected, the system automatically reefs or stows sails, providing real-time safety response while maintaining efficient operation during moderate conditions
4Power
If sail units are permanently mounted for continuous use, then propulsion assistance is maximized, but obstruction during cargo operations increases
Solution Approach 1:
The sail units are designed with movable mounting systems including rail-mounted carriages and rotatable booms that allow the sails to be dynamically repositioned. During cargo operations, the sails can be rotated parallel to the ship's side or retracted along the rails to clear the cargo deck, while maintaining propulsion capability when needed
Solution Approach 2:
The system uses multiple independent sail units that can be selectively deployed and stowed. Not all sail units need to be in use simultaneously, and they can be positioned at different locations along the ship's perimeter, providing propulsion assistance while leaving cargo handling areas clear when required
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 provides fuel savings of up to 25% by assisting ship engines, ensures safe operation under extreme winds, and allows for quick deployment and stowage, facilitating dockside operations without obstructing cargo handling.
Implementation Method 1
A plurality of sail units (102) mountable and movable on the rail system are provided. The rail system includes a plurality of fixed mounting points to which a respective one of the plurality of sail units can be fixed for use as an auxiliary sail to help drive the ship.
Implementation Method 2
each one of the sail units has a base that can be fixed to the fixed mounting points, at least two rollers or wheels mounted to the base to allow the sail unit to move along the rail system
Data Source
AI summary
A ship-mounted auxiliary sail system featuring a plurality of sail units mountable and movable about the ship on a rail system. The sail units can have automatic reefing safety features and/or automatic mast release safety features.