Modular Fluid-Dropping Control for Balanced Aircraft Water Release

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Solution Overview

Problem

Existing aircraft are not effectively convertible into water-bombing aircraft for firefighting, lacking efficient fluid storage and release systems that maintain aircraft balance and operational efficiency.

Innovation Solution

A modular fluid storage and release system with a reservoir, tubes, and a control device, allowing integration into host aircraft without modification, ensuring balanced fluid distribution and directional control for effective firefighting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fluid storage and release system is integrated into a host aircraft, then firefighting capability is improved, but aircraft balance and operational efficiency deteriorate

Engineering Contradiction:
Improvefirefighting capabilityVSAvoidaircraft balance
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The fluid storage and release system is divided into modular components including a fluid storage tank, release mechanism, and control systems that can be independently installed and adjusted within the aircraft cargo hold, allowing flexible configuration that minimizes impact on aircraft balance

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system is designed with localized fluid distribution capabilities through multiple release points and directional control mechanisms positioned at specific locations within the cargo hold, enabling targeted firefighting while maintaining overall aircraft stability through distributed weight management

Inventive Principle:
Principle #3Local quality

2Adaptability or versatility

If a fluid storage and release system is integrated into a host aircraft, then firefighting capability is improved, but operational efficiency deteriorates

Engineering Contradiction:
Improvefirefighting capabilityVSAvoidoperational efficiency
Core Design Contradiction:
Adaptability or versatilityVSProductivity

Solution Approach 1:

The system incorporates pre-positioned fluid storage tanks and pre-configured release mechanisms within the cargo hold, allowing the aircraft to be rapidly converted to firefighting mode without extensive modification or preparation time, thereby maintaining operational efficiency

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The release mechanism features dynamic control capabilities with adjustable flow rates, directional targeting, and real-time modulation of fluid discharge, enabling efficient firefighting operations while maintaining flexibility for different fire scenarios and preserving aircraft operational versatility

Inventive Principle:
Principle #15Dynamics

3Speed

If fluid is stored in a reservoir with height greater than tube height, then fluid flow speed is improved, but system complexity increases

Engineering Contradiction:
Improvefluid flow speedVSAvoidsystem complexity
Core Design Contradiction:
SpeedVSDevice complexity

Solution Approach 1:

The system utilizes gravitational potential energy by positioning the fluid storage tank at a higher elevation than the release tubes, creating a natural pressure differential that drives fluid flow without requiring additional pumping mechanisms, thereby achieving high flow speed while minimizing system complexity

Inventive Principle:
Principle #12Equipotentiality

Solution Approach 2:

The height differential between the storage tank and release tubes enables the system to self-regulate fluid flow through gravity-driven pressure equalization, eliminating the need for complex electronic controls or mechanical regulation devices and maintaining system simplicity while ensuring adequate flow velocity

Inventive Principle:
Principle #25Self-service

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

Enables temporary conversion of aircraft into water bombers with balanced fluid distribution and directional control, enhancing firefighting capabilities while maintaining aircraft functionality.

Implementation Method 1

The height Hr of the reservoir, namely the largest dimension of the reservoir taken in the vertical Z direction, is greater than that Ht (largest dimension taken in the vertical Z direction) of the tube(s) 12

Methodology Applied
Scientific EffectGravitational potential energy: Gravitation

Data Source

PatentEP4331986B1Device for controlling a fluid-dropping system according to at least one parameter criterion for a host fire-fighting aircraft
Publication Date: 2025.08.13 AIRBUS (SAS)
  • EP4331986B1 patent drawingFigure 1~2
  • EP4331986B1 patent drawingFigure 3~5
  • EP4331986B1 patent drawingFigure 6

AI summary

The invention aims to improve the water storage and release systems equipping firefighting host aircraft by limiting the quantity of water released. To this end, a control device for a fluid storage and release system equipping a host aircraft, comprising a fluid tank and at least one tube, is connected to valves that allow or prevent water release and controls the flow rate and duration of the released fluid based on at least one parameterized criterion.