Amphibious Vehicle Buoyancy Modules External Mounting
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Solution Overview
Problem
Existing amphibious vehicles, such as those based on the GMC DUKW design, face challenges in meeting modern regulatory standards for buoyancy reserve without compromising safety, particularly in the UK, where traditional methods like foam installation have proven inadequate or hazardous.
Innovation Solution
The design incorporates externally mounted buoyancy modules made of pliable closed-cell foam with a rigid protective coating, strategically positioned to increase the vehicle's wet surface area and provide supplementary buoyancy without increasing the vehicle's width, combined with a dual hydraulic propulsion system and an external cooling system for improved safety and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If foam is installed inside the hull to increase buoyancy reserve, then the buoyancy reserve is improved, but the vehicle may sink due to insufficient buoyancy or overheat and catch fire due to proximity of foam to moving parts
Solution Approach 1:
The buoyancy function is extracted from the internal hull space and relocated to external buoyancy modules. These modules are mounted on the exterior of the hull, separating the foam buoyancy material from the vehicle's moving parts and heat sources, thereby eliminating the fire hazard while maintaining buoyancy reserve compliance.
Solution Approach 2:
The buoyancy system transitions from a two-dimensional internal arrangement to a three-dimensional external configuration. By mounting buoyancy modules on the exterior surface of the hull, the design utilizes external space to provide buoyancy without interfering with internal vehicle operations or proximity to heat-generating components.
2Reliability
If buoyancy modules are mounted externally on the hull, then the buoyancy reserve and wet surface area are increased, but the vehicle width may exceed road regulations
Solution Approach 1:
The buoyancy modules are strategically positioned at specific locations on the hull exterior where they provide maximum buoyancy benefit while maintaining compliance with width regulations. The modules are configured to protrude only in longitudinal and vertical dimensions, keeping the vehicle's beam within legal limits for road operation.
3Adaptability or versatility
If traditional DUKW design is used, then the vehicle can operate on both land and water, but it cannot meet modern UK buoyancy regulations without compromising safety
Solution Approach 1:
The amphibious vehicle is divided into distinct functional modules: the original DUKW chassis and hull for land operation, and separate external buoyancy modules for water operation. This segmentation allows the vehicle to meet modern buoyancy regulations while preserving the classic amphibious capability, as the buoyancy modules can be attached to or removed from the hull as needed.
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 vehicle's buoyancy reserve while maintaining road-width compliance, reduces the risk of overheating and fire, and improves maneuverability and cooling efficiency, addressing the safety and regulatory challenges faced by traditional designs.
Implementation Method 1
supplementary buoyancy of the amphibious vehicle is provided by buoyancy modules located externally of the hull of the amphibious vehicle
Implementation Method 2
buoyancy modules made of pliable closed-cell foam with a rigid protective coating
Implementation Method 3
external cooling system for improved safety and efficiency
Implementation Method 4
external cooling system for improved safety and efficiency
Data Source
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AI summary
An improved amphibious vehicle comprising: a drive train; a plurality of ground engaging wheels; a cooling system; a water propulsion system; and a hull which defines a passenger compartment, wherein the form/shape of the hull below the waterline is substantially defined by a plurality of buoyancy modules that are demountably mountable to the amphibious vehicle.