Tri-hull Watercraft Propulsion System Integration
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Solution Overview
Problem
Existing electric propulsion watercrafts are limited by the size and weight of batteries, which occupy valuable deck space and create an unfavorable center of gravity, restricting their range and efficiency.
Innovation Solution
A tri-hull watercraft design with an electric motor and energy storage device positioned within the hull structure, where the energy storage device is disposed in a compartment connected to the hull interiors, allowing for a more compact and efficient propulsion system with improved balance and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If batteries are placed on the deck of the watercraft, then the propulsion system is accessible and easy to install, but deck space is consumed and center of gravity is unfavorable
Solution Approach 1:
The patent relocates the energy storage device from the horizontal deck surface to the vertical interior space of the hull, specifically in the lower portion. This dimensional transition from 2D deck placement to 3D interior integration resolves the space conflict by utilizing previously underutilized vertical volume, thereby preserving deck space while maintaining propulsion system functionality.
Solution Approach 2:
The energy storage device is nested within the hull structure's interior space, specifically positioned in the lower portion of the hull. This nesting approach allows the propulsion system components to be housed within the existing structural envelope of the watercraft, eliminating the need for additional deck space while integrating the propulsion system into the overall hull design.
2Duration of action of moving object
If large capacity batteries are used to extend range, then the watercraft can travel longer distances, but the weight and size of the propulsion system increases
Solution Approach 1:
The patent employs electric motors with variable speed control capabilities, allowing the propulsion system to optimize power consumption across different operating conditions. By adjusting motor speed and torque output to match actual propulsion needs, the system extends operational range without requiring proportionally larger battery capacity, thereby managing weight more effectively.
Solution Approach 2:
The propulsion system incorporates dynamically adjustable electric motors that can vary their operational parameters based on real-time conditions. This dynamic operation allows the system to maintain efficient power usage across varying speeds and loads, extending range while avoiding the need for oversized, heavy battery systems that would be required for static, fixed-power configurations.
3Ease of manufacture
If traditional propulsion system layout is used, then installation is straightforward, but space utilization is inefficient and performance is limited
Solution Approach 1:
The patent divides the hull into distinct functional zones, with the energy storage device positioned in the lower portion and the electric motor positioned in the forward portion. This segmentation of the propulsion system into spatially separated but functionally integrated components allows for efficient use of interior space while maintaining relatively straightforward installation procedures through modular assembly.
Solution Approach 2:
The hull's interior space is designed to serve multiple functions: it provides structural support, houses the propulsion system components, and maintains buoyancy. By making the hull structure itself multi-functional, the design achieves efficient space utilization without compromising installation simplicity, as the propulsion system integrates with rather than adds to the existing structural envelope.
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 configuration enhances the watercraft's energy efficiency, stability, and maneuverability, enabling longer range and faster travel while optimizing space usage and reducing the wetted surface area, thus improving overall performance.
Implementation Method 1
The propulsion system is adapted for moving the watercraft within a body of water and includes an electric motor and an energy storage device coupled to the electric motor
Implementation Method 2
the batteries of such a propulsion system are typically large and heavy, and are located on the deck of the watercraft
Data Source
AI summary
A watercraft includes a hull structure, a deck structure, and a propulsion system. The hull structure includes at least one hull each defining an interior. The deck structure is mounted to the hull structure. The propulsion system is adapted for moving the watercraft within a body of water, and includes an electric motor and an energy storage device coupled to the electric motor. The electric motor and the energy storage device are positioned adjacent one another within an area including at least one of the interior of the at least one hull.