Vessel Oscillation Damper Fin Assemblies
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Solution Overview
Problem
Current vessel stabilization systems fail to effectively dampen oscillations along both the longitudinal and vertical axes, leading to passenger discomfort, potential cargo loss, and capsizing risks, while also being costly, space-intensive, and difficult to install and maintain.
Innovation Solution
The implementation of fin assemblies with a II-type cross-section, placed symmetrically in the transom of the vessel, controlled by an electronic system incorporating a gyroscope, accelerometer, GPS, and position sensor, which rotate to dampen pitching and rolling oscillations, and can be operated manually or automatically to maintain optimal inclination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If fixed fins are installed on the sides of the hull to provide stabilization, then rolling oscillation is reduced, but vessel speed decreases and fuel consumption increases
Solution Approach 1:
The patent employs movable fins that can be dynamically adjusted between different positions (extended for stabilization, retracted for speed). The fins are connected to a control system that responds to vessel oscillation detected by gyroscopes and accelerometers, automatically extending them only when needed to counteract rolling motions, and retracting them when the vessel is stable to minimize resistance and maintain speed.
2Stability of the object's composition
If fixed fins are installed on the sides of the hull to provide stabilization, then rolling oscillation is reduced, but the probability of causing damage increases
Solution Approach 1:
The movable fins can be retracted into recesses or protected positions when not in use, eliminating the risk of damage from protruding fins in calm waters. The control system automatically retracts the fins when stabilization is not required, leaving the hull surface smooth and free of protruding elements that could cause damage during vessel operation.
3Object-affected harmful factors
If hinged fins are used to provide stabilization without permanent protrusion, then damage probability is reduced, but the system becomes extremely costly and requires specialized installation skills
Solution Approach 1:
The stabilization system is divided into separate modular components: movable fins, control mechanisms, sensing systems, and control electronics. Each component can be independently manufactured and tested before final assembly, simplifying the installation process. The fins are designed as separate units that can be attached to standardized mounting structures on the hull, reducing the need for specialized installation skills and lowering overall system cost.
4Speed
If hinged fins are installed in recesses to provide stabilization, then water resistance is minimized, but large holes are created in the hull requiring careful sealing
Solution Approach 1:
The movable fins are nested within recesses or compartments integrated into the hull structure, similar to how a doll is placed inside another doll. The fins can be stored within these recesses when not in use, eliminating the need for large external openings. The recesses are designed to fit within existing hull features or use standard mounting patterns, avoiding the need for large holes and complex sealing arrangements.
5Stability of the object's composition
If gyroscopic stabilization systems are used to dampen oscillations, then rolling and pitching stabilization is achieved, but the system requires a lot of space inside the hull
Solution Approach 1:
The patent replaces bulky mechanical gyroscopic stabilization systems with a more compact electronic control system. Instead of using large rotating gyroscopes that require significant internal hull space, the system uses sensors (gyroscopes and accelerometers) to detect vessel oscillation and electronically controls movable fins to provide stabilization. This substitution dramatically reduces the space required while maintaining effective oscillation damping.
6Stability of the object's composition
If pumping systems are used to move water between tanks for stabilization, then active stabilization is achieved, but the response is slow due to pumping delays
Solution Approach 1:
The patent extracts the water mass movement mechanism from the stabilization system and replaces it with a direct mechanical fin-based system. Instead of using pumps to move water between tanks (which causes delays), the system uses movable fins that can be immediately positioned to counteract oscillations. The control system directly actuates the fins through mechanical linkages, eliminating the intermediate water pumping step and achieving immediate response to oscillation detection.
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
This solution provides simultaneous damping of pitching and rolling oscillations, prevents capsizing, offers fuel economy, and is easy to install and maintain, with immediate startup and adaptability to various vessel sizes, while maintaining passenger comfort and safety.
Implementation Method 1
controlled by an electronic system incorporating a gyroscope, accelerometer, GPS, and position sensor
Implementation Method 2
controlled by an electronic system incorporating a gyroscope, accelerometer, GPS, and position sensor
Implementation Method 3
Fin assemblies with a II-type cross-section... which rotate to dampen pitching and rolling oscillations
Data Source
AI summary
A vessel oscillation damper system has one or more pairs of fin assemblies placed in the transom of the vessel symmetrically in relation to the transverse axis passing through the middle of the transom of the vessel, in which the fin assembly has multiple successive individual fins arranged in the vertical direction, each of which has a type Il cross-section, having one base and two intersecting sides, where the sides of the upper fin are tangential to the sides of the immediately lower fin, forming successive closed ducts through which water passes and the fin assemblies rotate clockwise above the water level and counterclockwise by their articulated connection to the vessel simultaneously or independently from each other and at the same time opposite and parallel, resulting in immediate damping of pitching and rolling simultaneously or individually and preventing the capsizing of the vessel and inflow of water.