Extendable Hull System Mono-Multi Hull Transition
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Solution Overview
Problem
Existing watercraft systems lack the ability to seamlessly transition between mono-hull and multi-hull configurations to adapt to varying boating conditions, and they require inefficient and non-adjustable weather screens and limited walking space, which restricts their functionality and stability.
Innovation Solution
An extendable hull system with a center hull and side hull portions connected by slidable elements and actuator arms, allowing for conversion between mono-hull and multi-hull configurations, along with a retractable awning and a pivotable railing system for enhanced coverage and walking space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the boat is designed as a multi-hull to provide stability and rough-water performance, then stability and wave-handling capability are improved, but the boat becomes too wide for conventional marina docks and convenient transport over land
Solution Approach 1:
The hull is divided into a center hull portion and two side hull portions that can be separated or connected. The side hull portions can slide relative to the center hull portion, allowing the boat to transition between a narrow mono-hull configuration for transport and docking, and a wider multi-hull configuration for stable operation on water.
Solution Approach 2:
The boat structure is made dynamic through slidable elements and actuator arms that enable the side hull portions to move between extended and retracted positions. This allows the width to change from a compact state for land transport to an expanded state for stable water operation, resolving the contradiction between stability and transportability.
2Ease of operation
If the boat is designed as a narrow mono-hull for easy transport and docking, then ease of transport and docking are improved, but the boat cannot handle heavy weather and big waves at high speeds
Solution Approach 1:
The hull is segmented into movable side portions that can be extended to create a multi-hull configuration when wave-handling capability is needed, while maintaining a narrow mono-hull configuration for easy transport and docking.
Solution Approach 2:
The dynamic extension mechanism allows the boat to adapt its width based on operating conditions - narrow for transport, wide for wave handling - thus improving reliability without sacrificing ease of transport.
3Device complexity
If conventional rigid weather screens are used on expandable watercraft, then structural simplicity is maintained, but the weather screens cannot provide efficient coverage when the watercraft is in expanded or contracted configurations
Solution Approach 1:
The weather screen assembly is made dynamic with weather screens that can extend and retract along with the hull portions. The screens are positioned to hang over the edges of the hull, providing effective rain runoff guidance in both expanded and contracted configurations without requiring complex rigid adjustment mechanisms.
Solution Approach 2:
The weather screens utilize flexible positioning mechanisms that allow the screens to adapt to different hull configurations, providing continuous weather protection whether the boat is in its narrow or wide state.
4Stability of the object's composition
If the side hull portions are extended to double the boat's width for improved stability, then stability and walking space are improved, but the device complexity increases due to slidable elements and actuator mechanisms
Solution Approach 1:
The extension mechanism is segmented into modular components - slidable elements within fixed frame elements and actuator arms - that work together to enable width adjustment while maintaining manageable complexity through standardized, replaceable parts.
Solution Approach 2:
The dynamic extension system uses coordinated slidable and actuated components that automatically adjust the hull width based on operational needs, providing stability enhancement with controlled complexity through automated rather than manual adjustment.
Data Source
AI summary
An extendable hull system movable between a mono-hull to a multi-hull configuration is provided so as to take advantage of both types of hull designs depending on the boating conditions. The extendable hull system provides a center hull portion and two side hull portions, each with separate planing surfaces in an expanded multi-hull configuration, and providing a shared planing surface in the contracted mono-hull configuration. The extendable hull system provides a pivotably connected railing system along a periphery of the side hull portions for moving to a deployed configuration providing additional walking surface. The extendable hull system provides a retractable awning movable between positions for covering the mono-hull and the multi-hull configuration.