Muscle-Powered Watercraft with Segmented Float and Electric Assist
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Solution Overview
Problem
Existing watercraft designs fail to replicate the movement patterns and speed of land-based cycling or running on water, lacking the ergonomic seating and leaning capabilities of bicycles, and struggle to achieve speeds comparable to road cycling due to high flow resistance.
Innovation Solution
A human-powered watercraft using a conventional bicycle as the drive unit, combined with a float unit optimized for low flow resistance, featuring a design that allows for hydrodynamic buoyancy and gliding, and optional electric assistance to enhance propulsion, enabling sporty locomotion similar to cycling on land.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional bicycle is used as the drive unit, then the watercraft can use existing bicycles for training, but the vehicle cannot tilt sideways when cornering due to the float structure
Solution Approach 1:
The watercraft is divided into a drive unit (bicycle) and a float unit that can be independently configured. The float unit includes a main float and optional outrigger floats that can be adjusted or removed to enable cornering inclination while maintaining the use of conventional bicycles.
Solution Approach 2:
The float unit is designed to be dynamic rather than fixed. The outrigger floats can be adjusted in position or removed entirely to allow the main float to tilt sideways during cornering, enabling the bicycle to assume a transverse inclination similar to land-based cycling.
2Stability of the object's composition
If outrigger floats are added to provide stability, then the watercraft becomes more stable when stationary, but the vehicle loses the ability to tilt sideways when cornering
Solution Approach 1:
The outrigger floats are designed to be dynamically adjustable rather than permanently fixed. They can be positioned to provide stability when stationary, then adjusted or removed to allow cornering inclination, enabling both stability and maneuverability.
Solution Approach 2:
The float system is segmented into a main float for primary buoyancy and separate outrigger floats for additional stability. This segmentation allows independent optimization of each component's function - the outriggers provide stability when needed while the main float enables cornering when the outriggers are adjusted.
3Speed
If the float unit is designed for low flow resistance to achieve high speeds, then locomotion speed improves, but the watercraft becomes less stable when stationary
Solution Approach 1:
The float unit is segmented into a streamlined main float for low flow resistance and separate outrigger floats for stability. The main float's hydrodynamic shape enables high speeds while the outrigger floats provide additional buoyancy and stability when stationary or at low speeds.
Solution Approach 2:
Different parts of the float unit have different geometric properties optimized for different functions. The main float has a streamlined, hydrodynamic shape for reducing flow resistance during motion, while the outrigger floats have a broader, more stable shape for providing stability when stationary.
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 watercraft achieves locomotion and cornering dynamics close to road cycling, with the ability to use existing bicycles and optional electric support, allowing for efficient training and operation with improved stability and handling.
Implementation Method 1
the float unit is optimized for low flow resistance in order to approximate sporty locomotion on land. In principle, the buoyancy effect of the float unit when in operation at higher speeds can be based on the displacement effect or on the gliding properties of the float(s).
Data Source
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AI summary
The features of the invention make it possible to realize a watercraft (1) with muscle power that is operated like a bicycle on land, in particular enabling cornering via handlebar control and inside cornering, and that achieves speeds similar to those achieved on land. Land-like speeds are achieved despite the increased resistance of water travel by augmenting the muscular power with power supplied from an electric storage battery (614).