Deployable Running Surface for Multihull Watercraft Wake Generation
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Solution Overview
Problem
Pontoon watercraft struggle to generate a sustainable wake at high speeds due to their fixed hull geometry, which is inefficient for both displacement and planing modes, limiting their performance in watersports applications.
Innovation Solution
A deployable and variable running surface system that converts a multihull vessel into a laterally continuous single hull configuration, utilizing a kinematic mechanism with diverting plates and actuators to modify the hull geometry, allowing the watercraft to operate efficiently in both displacement and planing modes by generating a surfable wake.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a pontoon watercraft uses a fixed multihull geometry, then it provides stability and smooth cruising at low speeds, but it struggles to generate a sustainable wake at high speeds
Solution Approach 1:
The patent applies the dynamics principle by making the hull geometry changeable through deployable running surfaces. The system allows the pontoon boat to transition between different hull configurations (multihull for stability, V-hull for wake generation) based on operational requirements, resolving the contradiction between stability and wake generation capability
Solution Approach 2:
The patent changes the geometric parameters of the hull by deploying or retracting running surfaces. This transforms the fixed multihull geometry into a variable geometry system that can adopt a V-hull configuration at high speeds to generate sustainable wakes, while maintaining the stable multihull form at low speeds
2Productivity
If a pontoon watercraft uses a V-shaped hull for wake generation, then it creates a surfable wake at high speeds, but it causes the craft to rock due to pivoting on a central axis
Solution Approach 1:
The patent uses deployable running surfaces that can be selectively deployed to create V-hull characteristics only when needed for wake generation, while maintaining the stable multihull configuration during normal operation. This dynamic adjustment allows the system to achieve wake generation capability without permanent instability
Solution Approach 2:
The patent applies local quality by modifying only specific portions of the hull (deploying running surfaces at the stern) rather than changing the entire hull geometry. This allows V-hull characteristics to be introduced locally for wake generation while the overall multihull structure maintains its stability
3Productivity
If a pontoon watercraft has a fixed hull geometry optimized for one mode of operation, then it performs well in that specific mode, but it is inefficient in other modes
Solution Approach 1:
The patent transforms the fixed hull geometry into a dynamic system with deployable running surfaces that can be adjusted based on the mode of operation. This allows the pontoon boat to optimize its hull characteristics for different speeds and conditions, achieving efficient performance across multiple operational modes
Solution Approach 2:
The patent makes the hull geometry universal by designing a system that can perform multiple functions: stable multihull cruising at low speeds, efficient planing at high speeds, and sustainable wake generation. The deployable running surfaces enable the same vessel to excel in different operational contexts
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 enables a pontoon watercraft to maintain stability at low speeds while converting to a V-hull configuration for high-speed wake generation, enhancing its performance in watersports by creating a surfable wake and improving overall efficiency.
Implementation Method 1
the V-hull configuration may be operable to lift a forward bow to squat a multihulled watercraft into the water depths
Implementation Method 2
These hydrodynamic forces tend to lift the running surface out of the water, thereby reducing drag
Implementation Method 3
A port side adjustable water diverting surface and a starboard side adjustable water diverting surface may be pivotally secured to a central structure
Data Source
AI summary
The present invention provides a hull-conversion device and method for modifying the underside of a watercraft, more specifically a multihull watercraft. The hull-conversion device comprising a water diverting surface, a kinematic assemblage, and a frame. The hull-conversion device may be operable to adjust the watercraft's characteristics in displacement mode and planing mode. The hull-conversion device may function to provide a more stable, controllable, and efficient platform for operating a multihull watercraft, and provide a suitable wake for towable water sports.