Modular Vessel Stabilizer Mounting for Noise and Hull Rework
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Solution Overview
Problem
Existing vessel stabilizers generate noise during operation, are difficult to modify or maintain, and can be prone to failure, especially when operating in shallow water, leading to potential damage and increased maintenance costs.
Innovation Solution
A vessel stabilizer design featuring a vibrationally floating drive unit within a base unit, with insulation elements to reduce structural noise and a modular structure allowing for easy maintenance and modification without hull rework, and enhanced support elements to withstand torque and prevent failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fin stabilizers are operated, then stabilization function is achieved, but noise is generated for crew and passengers
Solution Approach 1:
The drive unit is extracted from direct contact with the hull by introducing insulation elements (rubber pads, foam material) between the drive unit and hull, separating the noise source from the structure that transmits noise to passengers
Solution Approach 2:
Insulation elements are introduced as intermediary components between the drive unit and the hull to absorb and dampen vibrations and noise, preventing direct transmission of harmful factors to the vessel structure
2Stability of the object's composition
If stabilizer is permanently fixed to hull, then installation stability is achieved, but modifications require hull rework
Solution Approach 1:
The stabilizer system is segmented into modular components (base unit, drive unit, fin) that can be independently installed and removed, allowing modifications without permanent hull alterations while maintaining operational stability
Solution Approach 2:
The mounting system transitions from permanent fixed installation to a dynamic removable design using through-hulls and external mounting, enabling the stabilizer to be easily installed, removed, and modified without permanent hull modifications
3Reliability
If fins operate in shallow water, then stabilization is provided, but risk of hitting obstacles increases
Solution Approach 1:
The system is prepared for potential failures by designing the fin and drive unit to be easily removable and replaceable, and by implementing a modular base unit that can withstand impact forces without catastrophic failure, cushioning against the harmful effects of obstacle collisions
4Volume of moving object
If stabilizer size is reduced to fit limited hull space, then installation flexibility is improved, but torque capability may be compromised
Solution Approach 1:
The design optimizes the distribution of components in three-dimensional space, arranging the motor, gearbox, and fin in a compact configuration that maximizes torque output within limited hull space by utilizing vertical and radial dimensions efficiently
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
Significantly reduces noise perception by 70-80%, allows for modifications without hull reparation, enhances stability, and reduces maintenance time and costs while improving safety and performance in various operational conditions.
Implementation Method 1
a first insulation element (30) arranged between the base unit (10) and the drive unit (20), wherein the base unit is vibrationally insulated from the drive unit by the first insulation element (30)
Data Source
AI summary
A vessel stabilizer including a base unit configured to be fixedly mounted to a hull of the vessel, and a drive unit comprising an upper part releasably assembled to a lower inner part. The drive unit includes a motor and an output element. The motor is configured to rotationally drive the output element and the output element is configured to be fixed to a stabilizer element outside the hull. A first insulation element is arranged between the base unit and the drive unit. The base unit is vibrationally insulated from the drive unit by the first insulation element.