Variable-Volume Fluid Tank for Slosh and Weight Transfer Control

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Solution Overview

Problem

Sloshing of fluids within storage tanks in vehicles, aircraft, and vessels leads to significant changes in the center of gravity, affecting vehicle performance, stability, and increasing braking distances.

Innovation Solution

A fluid-storage tank equipped with a fluid storage volume adjuster, such as an inflatable bladder, that dynamically adjusts the fluid storage volume based on operating conditions like fluid volume, flow rate, pressure, and temperature, thereby reducing the space available for fluid slosh.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If baffles are provided within the fluid tank to mitigate sloshing, then the sloshing effect is reduced to some degree, but the baffles are unable to eliminate the sloshing effect entirely and the device complexity increases

Engineering Contradiction:
Improvesloshing effectVSAvoiddevice complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent employs a movable partition wall that can dynamically adjust its position within the tank based on fluid levels and sloshing conditions. This dynamic adjustment allows the partition to optimally mitigate sloshing effects while adapting to changing operating conditions, providing superior performance compared to static baffles without requiring complex multi-component systems

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention extracts the essential slosh-mitigation function from complex multi-baffle systems and implements it through a single movable partition wall. By taking out only the critical functionality and implementing it through a simpler movable structure, the patent reduces device complexity while maintaining or improving slosh mitigation effectiveness

Inventive Principle:
Principle #2Taking out (Extraction)

2Quantity of substance

If the fluid storage volume is increased to accommodate more fluid, then the storage capacity is improved, but the weight transfer during braking and acceleration increases

Engineering Contradiction:
Improvefluid storage capacityVSAvoidweight transfer
Core Design Contradiction:
Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The movable partition wall dynamically adjusts its position based on fluid volume and vehicle operating conditions. When the tank is full, the partition can be positioned to minimize sloshing and weight transfer. As fluid is consumed and the level drops, the partition automatically adjusts to maintain optimal slosh mitigation, ensuring consistent performance across varying storage volumes without requiring multiple tank sizes

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the spatial parameter of the partition wall position in response to changing fluid volume and acceleration conditions. By adjusting the partition's location, the system modifies the fluid distribution within the tank, thereby controlling the center of gravity shifts and weight transfer during braking and acceleration while maintaining maximum storage capacity

Inventive Principle:
Principle #35Parameter changes

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 dynamic adjustment of the fluid storage volume effectively reduces weight transfer and sloshing, enhancing the stability and performance of vehicles and vessels by maintaining a consistent center of gravity.

Implementation Method 1

A fluid-storage tank equipped with a fluid storage volume adjuster, such as an inflatable bladder, that dynamically adjusts the fluid storage volume based on operating conditions

Methodology Applied
Scientific EffectInflation:

Data Source

PatentEP4556277A1A fluid-storage tank
Publication Date: 2025.05.21 BAE SYSTEMS PLC
  • EP4556277A1 patent drawingFigure 1~2
  • EP4556277A1 patent drawingFigure 3~4
  • EP4556277A1 patent drawing

AI summary

A fluid-storage tank comprising a fluid storage volume for storing fluid therein and a fluid storage volume adjuster configured to adjustably vary the fluid storage volume of the fluid-storage tank according to an operating condition of the fluid-storage tank.